2nd Gen 3VZE engine: R U thinking of doing timing belt/water pump? My observations

Forerunner · 05-16-2004, 09:21 PM

For those of you Toyota owners with 3 VZE engine, who either have to or want to change their timing belt/water pump... Here are some tips and observations. FYI, if it has been more than 70K since your last timing belt, it is due. If it has been over 100k, it is overdue and asking to be broken.

First, the water pump is timing belt driven. Don't even ask, that is a terrible design.. That means, you have to remove the timing belt to do the water pump. That also means you would be crazy not to do the water pump if you do the timing belt, and vice versa. Toyota recommends timing belt change at 60,000 miles.. it can probably go a little longer, 75k or so. But after that, you are asking for it to break. Since you need to pull the entire engine front apart to do this job, this is also a good time to replace your drivebelts, thermostat, etc. The thermostat is on the waterpump and is relatively a pain to get to normally, so might as well replace it with a new one now.

The basic sequence is this :

1)Remove radiator
2) Remove fan clutch,fan.. etc
3) Remove all drivebelts and most pulleys
4) Remove sparkplugs
4) Remove crankshaft pulley
5) Remove all timing belt cover
6) Remove timing belt
7) Remove waterpump
Guaranteed many hours of fun, fun, fun....

Regardless, I had no choice as my water pump gasket was leaking. I had to do it or pay someone else to do it. After getting quotes of $700-800 from dealer and $600 from non-dealer, I decided to do it myself. So here is the list of things you need to know

1) You will need good instructions.. preferably original Toyota service manuals. However, Autozone.com provides fairly good instructions as well, and they are free. Just look under repair guides. It will not, however, tell you about the potential pitfalls, like the fact that you need special tools to remove certain components or you are stuck.

2) You WILL need good tools and TORQUE wrenches. Due to wide range of torques involved, probably two different size wrenches are required. Rent them or buy them, you don't want to screw it up.

3) You will need special tools, some of which you can get lended from Autozone - pulley pullers and probably a torque wrench

4) You will need ONE special tool which you cannot get from Autozone - Crankshaft pulley holder- it holds the pulley while you unscrew the bolt that holds it - I assume you can get it from a Toyota dealer - I did not have one, and that nearly ruined my day. I was able to get around it with some luck by using other less than perfect technics to hold the pulley and breaking some tools in the process during several hours. I would not attempt this job again without one. Considering that you need to tighten the pulley to 181 FT LBS (245 NM) of force (or overcome that amount of force to losen it in the first place), there is little alternative to the special tool. If you decided to do it, Toyota dealer should be able to provide you with the SST number for the tool..

5) Clean off engine block where the water pump mounts to perfection - you will not have a chance to find out that there is a leak until you put the whole thing back together - and that will surely ruin your afternoon after you just spent several hours reassembling your car. A half assed job at this point is not an option. On many normal engines where the waterpump is fanbelt or some other accessory belt driven, a leak after reassembly would be annoying, but on this engine, a leak at that point will make you wanna go jump in some deep lake.

5) Use seal packing and gasket on the waterpump - not one or the other alone, or else it will probably leak soon. Incidentally, my waterpump was done under previous owner, by a dealer, about 65k miles ago. The fact that the gasket failed could be attributed to several factors.. but one of them, after I took off my waterpump, they used silicon seal packing only, and looked like not enough in some places. So many hours of work, only to get to that leak.. you get the idea.

6) You can spend x amount on parts from a parts store, or double that from Toyota dealer, your choice. Personally, as far as belts go, Toyota timing belt does not appear to me to be of higher quality than aftermarket. The belt I pulled out of the car had 65k miles on it. It was a Toyota belt put it by a dealer when the water pump was done, as mentioned earlier. It had cracks all over the top and was in poor shape. I have seen aftermarket timing belts with more miles that looked significantly better. I put in Gatorback aftermaket belt.

7) Well, if you do it, when you are done, at least you know it was done right. Not to mention the tremendous satisfaction of accomplishing a major repair. I know what everything was torqued to proper specs, for example. I have seen even dealers screw up so many times.... There is no way to know what goofball was working on your car and if he took the time to torque 2 of the waterpump bolts to one spec, and the other 5 to another, lower spec, as the factory service manual calls for. Something like that you cannot check, and if 30k down the road the pump leaks, you wont be able to know if that's because they did a poor job.

It is nice to do it in a garage, if you have one. I did mine outside, and it rained all day as I was doing it. I was wet and cursing when I was done, but it was worth it.

Good luck, and feel free to post questions, comments, etc!

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934rnr · 05-17-2004, 06:10 AM

Quote:

4) You will need ONE special tool which you cannot get from Autozone - Crankshaft pulley holder- it holds the pulley while you unscrew the bolt that holds it - I assume you can get it from a Toyota dealer - I did not have one, and that nearly ruined my day. I was able to get around it with some luck by using other less than perfect technics to hold the pulley and breaking some tools in the process during several hours. I would not attempt this job again without one. Considering that you need to tighten the pulley to 181 FT LBS (245 NM) of force (or overcome that amount of force to losen it in the first place), there is little alternative to the special tool. If you decided to do it, Toyota dealer should be able to provide you with the SST number for the tool..

You don't have to have the tool as you mentioned I used the flat end handle of a craftsman 1/2 ratchet or a large flat tip screwdriver perched on the the end of one of the back cover bolt between the cam gear wheel to untorque and retorque the cam gear bolts. This is with everything assembled and the tensioner on. The cam gear bolts are at 80ft lbs I believe.
Also torquing the harmonic balencer bolt if you throw the engine in 3rd gear if you have a standard transmission on a incline you can easily torque that bolt to max torque of 181ft lbs.

williemon · 05-17-2004, 06:38 AM

Do you need a special tool to hold the cam gears?

Forerunner · 05-17-2004, 08:50 AM

Quote:

Originally Posted by 934rnr

You don't have to have the tool as you mentioned I used the flat end handle of a craftsman 1/2 ratchet or a large flat tip screwdriver perched on the the end of one of the back cover bolt between the cam gear wheel to untorque and retorque the cam gear bolts. This is with everything assembled and the tensioner on. The cam gear bolts are at 80ft lbs I believe.
Also torquing the harmonic balencer bolt if you throw the engine in 3rd gear if you have a standard transmission on a incline you can easily torque that bolt to max torque of 181ft lbs.

I have an automatic, so I did not have that option on the harmonic balancer/crankshaft pulley. I did attempt to jam the pulley but at that level of force, things either break or bend, or you can damage the pulley.

Forerunner · 05-17-2004, 08:54 AM

Quote:

Originally Posted by williemon

Do you need a special tool to hold the cam gears?

There is one, but if you are careful you can probably get by with a similar method that 934rnr described above.. Be aware that Toyota service manual specifically warns against using timing belt tension to hold the pulleys whilie tightening them. I did not need to take them off - as long as you align everything as in the manual, and all the alignment marks match, you can just route the new belt around them without taking them off.

mrmojorisinphan · 05-17-2004, 09:23 AM

its been awhile since I've done this, but as far as the crankshaft pulley, I made my own out of piping I bought at Homebase....It cost like $5 and worked perfectly. basically all I did was buy a 2ft pipe and made two forks about 3" long and about 3" apart from eachother

looked like this F

stick the two forks in the center of the pulley between the gaps to hold the pulley in place.

Its hard to explain but once you see the real tool and the cranckshaft pulley it makes sence.

Highland Runner · 05-17-2004, 10:16 AM

http://www.off-road.com/toyota/tech/v6tbelt/index.html
This shows a visual of the job. A lot of steps are not covered.
I already had a pulley puller and a torque wrench. I made something to hold the pulley from turning likemrmojorisinphan. Make sure to replace the bearings in the idler pulleys. I didn't, and the upper one took a crap not more than 2000 miles after I did the job. I used an after market belt which now has almost 90k miles. Guess its time to do it again.

pyromjm · 08-16-2007, 10:51 PM

is there a way to replace the upper idler pulley without removing the cam sprockets?

infiltrator · 08-16-2007, 11:22 PM

sounds like a job. i dont know if mine was EVER changed. i have to ask, if not, it would have almost 190k on it! holy crap, i hope it im okay...

damn 600 bucks for that!!! i dont have that kind of money either... but if it needs it. you can buy a cheapo 4runner for 600 bucks damn!....
im bummed out...

how much is it if you do it?

anyone wanna do it for me? ill pay u! (idk how much hahah)

southern californa 3 miles from magic mountain!!!! ill get you in! hahahh

olharleyman · 08-17-2007, 12:26 AM

Quote:

Originally Posted by Forerunner

For those of you Toyota owners with 3 VZE engine, who either have to or want to change their timing belt/water pump... Here are some tips and observations. FYI, if it has been more than 70K since your last timing belt, it is due. If it has been over 100k, it is overdue and asking to be broken.

First, the water pump is timing belt driven. Don't even ask, that is a terrible design.. That means, you have to remove the timing belt to do the water pump. That also means you would be crazy not to do the water pump if you do the timing belt, and vice versa. Toyota recommends timing belt change at 60,000 miles.. it can probably go a little longer, 75k or so. But after that, you are asking for it to break. Since you need to pull the entire engine front apart to do this job, this is also a good time to replace your drivebelts, thermostat, etc. The thermostat is on the waterpump and is relatively a pain to get to normally, so might as well replace it with a new one now.

The basic sequence is this :

1)Remove radiator
2) Remove fan clutch,fan.. etc
3) Remove all drivebelts and most pulleys
4) Remove sparkplugs
4) Remove crankshaft pulley
5) Remove all timing belt cover
6) Remove timing belt
7) Remove waterpump
Guaranteed many hours of fun, fun, fun....

Regardless, I had no choice as my water pump gasket was leaking. I had to do it or pay someone else to do it. After getting quotes of $700-800 from dealer and $600 from non-dealer, I decided to do it myself. So here is the list of things you need to know

1) You will need good instructions.. preferably original Toyota service manuals. However, Autozone.com provides fairly good instructions as well, and they are free. Just look under repair guides. It will not, however, tell you about the potential pitfalls, like the fact that you need special tools to remove certain components or you are stuck.

2) You WILL need good tools and TORQUE wrenches. Due to wide range of torques involved, probably two different size wrenches are required. Rent them or buy them, you don't want to screw it up.

3) You will need special tools, some of which you can get lended from Autozone - pulley pullers and probably a torque wrench

4) You will need ONE special tool which you cannot get from Autozone - Crankshaft pulley holder- it holds the pulley while you unscrew the bolt that holds it - I assume you can get it from a Toyota dealer - I did not have one, and that nearly ruined my day. I was able to get around it with some luck by using other less than perfect technics to hold the pulley and breaking some tools in the process during several hours. I would not attempt this job again without one. Considering that you need to tighten the pulley to 181 FT LBS (245 NM) of force (or overcome that amount of force to losen it in the first place), there is little alternative to the special tool. If you decided to do it, Toyota dealer should be able to provide you with the SST number for the tool..

5) Clean off engine block where the water pump mounts to perfection - you will not have a chance to find out that there is a leak until you put the whole thing back together - and that will surely ruin your afternoon after you just spent several hours reassembling your car. A half assed job at this point is not an option. On many normal engines where the waterpump is fanbelt or some other accessory belt driven, a leak after reassembly would be annoying, but on this engine, a leak at that point will make you wanna go jump in some deep lake.

5) Use seal packing and gasket on the waterpump - not one or the other alone, or else it will probably leak soon. Incidentally, my waterpump was done under previous owner, by a dealer, about 65k miles ago. The fact that the gasket failed could be attributed to several factors.. but one of them, after I took off my waterpump, they used silicon seal packing only, and looked like not enough in some places. So many hours of work, only to get to that leak.. you get the idea.

6) You can spend x amount on parts from a parts store, or double that from Toyota dealer, your choice. Personally, as far as belts go, Toyota timing belt does not appear to me to be of higher quality than aftermarket. The belt I pulled out of the car had 65k miles on it. It was a Toyota belt put it by a dealer when the water pump was done, as mentioned earlier. It had cracks all over the top and was in poor shape. I have seen aftermarket timing belts with more miles that looked significantly better. I put in Gatorback aftermaket belt.

7) Well, if you do it, when you are done, at least you know it was done right. Not to mention the tremendous satisfaction of accomplishing a major repair. I know what everything was torqued to proper specs, for example. I have seen even dealers screw up so many times.... There is no way to know what goofball was working on your car and if he took the time to torque 2 of the waterpump bolts to one spec, and the other 5 to another, lower spec, as the factory service manual calls for. Something like that you cannot check, and if 30k down the road the pump leaks, you wont be able to know if that's because they did a poor job.

It is nice to do it in a garage, if you have one. I did mine outside, and it rained all day as I was doing it. I was wet and cursing when I was done, but it was worth it.

Good luck, and feel free to post questions, comments, etc!

I just did mine last weekend and replaced the tensioner TOYOTA thermostat gasket(went to cheap route once before never again leaks suck bad and doing the job twice sucks even more) and pulley as well if your there why not right?

I never even considered pulling the spark plugs still can't see what benifit you would have gained.

As for the Special crankshaft pulley holder any MAC , SNAP ON , EVEN CRAFTSMAN sell a chain wrench that works perfect for the job.

Lining up the timing marks I belive to be the most important part of the whole job. Also getting the belt backlash just right is also very impotant and this may suck but around 30k miles retighten the belt to make it last longer.

All in all it took me around 2-2 1/2 hrs to complete the job and what a differance it made in my piece of mind I did mine at 214,565 miles just a few things I thought of after reading this post.

Adam F · 08-17-2007, 06:20 AM

Quote:

Originally Posted by olharleyman

I never even considered pulling the spark plugs still can't see what benifit you would have gained.

Makes turning over the engine to get it at TDC easier. I wouldn't recommend it though, as the spark plugs are a pita to remove. I had to use 2 helicoils after I changed mine last time.

tweezak · 12-10-2007, 03:16 AM

First post, y'all!

I just did the timing belt on my 1990 4Runner 3VZE for the third time. First time was a scheduled belt change, second time was when I was changing the water pump (and just changed the belt while I had the whole thing apart) and this time, the top idler pulley let go at 65. What a mess. Bearings and shrapnel every where. Word to the wise...when you hear a howling coming from the timing belt cover, it is probably the idler.

Here is a pic that someone posted showing the whole front right after a timing belt/idler/tensioner/water pump change. These parts will cost you about $270 at Napa. The idler, by the way, is at the top of the picture between the cam sprockets. The timing belt runs under it.

The guy at Napa said he has sold many of those idlers over the years and says they are prone to failure on that engine. After seeing mine go ballistic, I'm not surprised.

The good news was that there was no damage to the engine or other parts. The water pump and thermostat were just changed in September so I left them alone but typically, I suggest (like others here have mentioned) that they be changed with the timing belt.

There were a few things I ran into on this job that I thought I'd pass along that may help someone else down the road.

I had a helluva time removing the camshaft sprockets. Your best option...use an air-impact wrench. I don't have one so I had to find other means. The sprockets have never been off this rig and I was working in 29 degree weather and the bolts were stuck hard. I thought about the socket-on-the-bolt trick utilizing the dust shield mounting bolts similar to how 934rnr suggested but in retrospect, I am glad I did not. In the end, I used a cheap version of a balancer puller like this one:

I put a bolt in one of the slots and tightened it in the right position with a nut so that it and the center screw were up against two of the "spokes" of the sprocket. I then used a large pipe wrench to hold the balancer puller (and thus the sprocket) while I turned the bolt that secures the sprocket.

I got lots of power this way because I was using a long breaker bar and a big pipe wrench but I still couldn't get it to budge. I tried heat and penetrating fluid too. No dice. That's when I did a search and ended up here thinking maybe they were left hand threads.

Ultimately, I forced it. I had a buddy come over and he got on one side of the truck and held the pipe wrench with both hands and I pulled for all I was worth on the breaker bar from the other side of the rig. We had tons of leverage and good grip and were applying easily over 200-250 ft-lbs before that beotch finally broke free at which point both of us smashed our elbows. Thank God for strong sockets.

I can only attribute this difficulty to the fact that the flange on the bolts is much wider than the bolt head itself. The increased surface area and the fact that the bolts had been there for 200k miles all contributed to the torque required to remove being much higher than the spec'd 80 ft-lb required to install. I'm just glad I didn't round either of them off.

For installation, I put a 10mm 3/8 inch deep socket over the dust cover bolt head that is behind the sprocket and held it while my buddy clicked the sprocket bolt to 80 ft-lbs. I am absolutely certain that method would not have worked for removal in my case. As always, YMMV.

Anyway...if you are doing the timing belt or water pump and the idler has never been replaced, I'd suggest doing it. The 3VZE is not an interference engine so you don't have to worry about bending valves when the bearing fails but it is a lot more convenient to do the job when you are planning on it.

A timing belt kit that I bought at Napa included the belt, a new idler and a new tensioner for a little over $200. This sounds like a lot but the idler is fairly fancy so I don't think it's too far out of line.

Hopefully, my experience will help someone else out there.

Peace.

Keith

tweezak · 12-10-2007, 03:25 AM

Quote:

Originally Posted by Adam F

Makes turning over the engine to get it at TDC easier. I wouldn't recommend it though, as the spark plugs are a pita to remove. I had to use 2 helicoils after I changed mine last time.

As an aside, it isn't necessary to pull the plugs to find TDC while doing a belt change. The mark on the crankshaft only lines up at TDC. The thing to worry about is whether the rotor (driven by the driver-side camshaft) is pointing to the number 1 plug wire when the camshaft alignment mark is vertical. I don't know for sure but I suspect the rotation of the rotor to camshaft is a 2-1 ratio (fires on compression and not exhaust stroke).

Someone please correct me if I'm wrong here.

GSGALLANT · 12-10-2007, 04:47 AM

Quote:

Originally Posted by tweezak

As an aside, it isn't necessary to pull the plugs to find TDC while doing a belt change. The mark on the crankshaft only lines up at TDC. The thing to worry about is whether the rotor (driven by the driver-side camshaft) is pointing to the number 1 plug wire when the camshaft alignment mark is vertical. I don't know for sure but I suspect the rotation of the rotor to camshaft is a 2-1 ratio (fires on compression and not exhaust stroke).

Someone please correct me if I'm wrong here.

I think he meant that it makes it physically easier to rotate the engine without the spark plugs in place, because you're not fighting compression.

wcc_71 · 02-07-2008, 09:03 AM

i have that same 3VZ-E 3.0 dual over head cam motor in my 92 pickup and i have it apart right now and i am having a hard time finding a water pump for it. the water pump that i took off it was not pumping water. i replaced the thermostat and i took the top radiator hose off and let the truck run nothing but steam came out so i turne the truck off and water started coming out so i shot water through the top radiator hose with it off and it went back through to the radiator so i know its not stopped up. did u have a hard time finding a water pump? everywhere i go tries to give me one for a single cam. and the impellers on the water pump are slapping the water instead of pushing it. can you help me out????

Blurr · 02-07-2008, 09:15 AM

for holding the cam sprockets in place for loosening/tightening the bolt, this is the type of tool you need. I'd stay away from chain wrenches:

http://www.shoptoolsshoptools.com/shopexd.asp?id=1956

I have seen similar ones on ebay for about $20. Here's a pic of a MAC version of this tool that a local shop let me borrow:

Forerunner · 02-08-2008, 04:55 PM

Quote:

Originally Posted by wcc_71

i have that same 3VZ-E 3.0 dual over head cam motor in my 92 pickup and i have it apart right now and i am having a hard time finding a water pump for it. the water pump that i took off it was not pumping water. i replaced the thermostat and i took the top radiator hose off and let the truck run nothing but steam came out so i turne the truck off and water started coming out so i shot water through the top radiator hose with it off and it went back through to the radiator so i know its not stopped up. did u have a hard time finding a water pump? everywhere i go tries to give me one for a single cam. and the impellers on the water pump are slapping the water instead of pushing it. can you help me out????

I guess this thread will never die

I attribute it to the fact that the dealer will take your arm, leg and firstborn to do the timing belt, so as long as these motors are around, there will be no lack of DIY interest i this particular repair. I do not even have the truck anymore, but doing this belt was a memorable experience.

I had no issues locating the waterpump. In fact, every major automotive chain carried it. You may also want to check rockauto.com.. they sometimes have better quality parts than chain stores at lower prices, even with shipping.

I am not sure from your description what the problem is. Just take the old pump to the store and see if it looks the same. If it is the same, but it is not "pumping" but slapping it, whatever that means, you have a blockage somewhere. As I recall it was the impeller type.. the newer impellers may look a little different, but that is supposed to be improved design that pumps better than the original. As long as the pump is what is called for the motor, regardless of the impeller design, it should be the right one.

Cheers

dutersupy · 02-08-2008, 06:18 PM

is a 3.0 a DOHC???????i didnt think so............

Jay351 · 02-09-2008, 12:06 PM

the 3vze is SOHC

scope103 · 02-13-2008, 02:28 PM

To remove the bolt holding the cam pulley on the 3VZE, you can hold the camshaft using the wrench flats in the MIDDLE of the camshafts. You'll need a 27mm (or a 1 1/16") wrench (doesn't everyone have those?). And (of course) you remove the camshaft cover. Since there is no place to "rest" the wrench (the head is aluminum, and you don't want to dent the camshaft cover sealing surface!) you'll need to cut a notch in a 2x4 to hold the end of the wrench against the side of the truck.

When you get the pulleys off, look closely at the 5mm "knock pins" that hold the pulleys to the cams. Mine were bent about 1mm. They are cheap to replace, but the keyway in the pulley was dented too. The two pulleys (left and right) are actually identical, just reversed. By swapping them, the new knock pins no longer touched the dented part.

kwando · 06-11-2008, 06:22 PM

instead of starting a new thread, i will just bump this thread.

Does toyota sell a parts "kit"?

Or should i just buy all the parts seperate? If buying seperated, what else do i needs besides:

1. Timing belt
2. Water pump
3. Tensioner??

Thanks in advance!

infiltrator · 06-12-2008, 09:47 AM

I think he said thermostat too. I think if I did a job like this, I would feel very proud saving myself this money, and a sense of accomplishment . I will probably learn some day.

How do you guys learn how to do such things to your trucks? Is it just experience doing it since you were younger? Did someone teach you.

What would be your advice to me going into this? Is it something I could do, not knowing everything I should know about my truck?

Blurr · 06-13-2008, 12:24 PM

Quote:

Originally Posted by infiltrator

I think he said thermostat too. I think if I did a job like this, I would feel very proud saving myself this money, and a sense of accomplishment . I will probably learn some day.

How do you guys learn how to do such things to your trucks? Is it just experience doing it since you were younger? Did someone teach you.

What would be your advice to me going into this? Is it something I could do, not knowing everything I should know about my truck?

get a factory service manual or do a search for one in this forum (many are available via .pdf). if you can follow the directions, you can easily do a timing belt job on your 3vze. dozens of people on this forum have performed this job and posted their tricks and tips.

Anse · 08-26-2008, 02:14 PM

I’m having a challenge with the timing belt on a truck with this engine. I had to replace the knock sensor. Got it all stripped down and the new sensor is in. The timing belt, tensioners, water pump, etc. were replaced about 5K miles ago, so I’m reusing everything. I tried to shortcut the teardown of the timing belt assembly by just removing the top cover and loosening the belt tensioner. This allowed me to remove the top idler assembly so I could take the intake manifold off without removing the crank pulley and everything else on the front of the engine.

I did mark the belt and sprockets so I could reassemble, but in my haste, and like an idiot, I forgot to set the timing at TDC before loosening the tensioner. As soon as there was slack in the belt, the cam position moved on both banks. I did manage to get the belt back on in the correct position (a real bugger), but it seems that the belt is now somewhat tight on the tensioner (passenger side) and loose on the driver’s side on the span below the cam sprocket. I don't even have the spring back on the tensioner yet to adjust the belt tension, which has me concerned about whether or not I have it reassembled properly.

Is the slack in the belt on the driver’s side normal? Do you think that I have somehow gotten the belt off by a tooth? I’m afraid I’m going to have to tear down further and remove the crank pulley so I can realign everything, but I’d sure like to avoid this if at all possible.

Here's my theory on how to ensure that I get it right with the current level of teardown. If I remove the belt from the cam sprockets, align the notch on the crank pulley with the 0 timing mark, and then carefully rotate and align the camshafts by the same increments (to ensure they are on the same stroke cycle) with the timing marks at the top, verifying that the rotor in the distributor points at the no. 1 cylinder, and then reroute the belt, would I have everything in proper aligment? Am I missing something important in my theory?

scope103 · 08-26-2008, 05:51 PM

Anse -

It sounds like you've got it. Because of the spring tension on the cam shaft (from the valves) it tends to not stay put at TDC. Just align the marks on the cam pulleys pointing up, align the mark on the harmonic damper to TDC, AND THEN CHECK you are at TDC, not BDC (remember that the crankshaft turns twice for each turn of the camshafts --slide a wooden chopstick in the #1 spark plug hole; if you hit the top of the piston you're good), and then put on the belt.

Not sure it's right? With the tensioner back on, carefully turn the crank two turns. Is everything still lined up? You're golden. If it's off, it will be off at least one whole tooth, and that is easy to see.

Lots of new timing belts (but not all) have marks to help line them up; these will help but you should still check. Be aware that these belts have what is called "hunting" pattern; if you turn the crank until the belt-mark comes around and lines up again, the marks on the belt WILL NOT line up with the cam pulleys. That is not a problem.

05-17-2004, 06:38 AM	#3 (permalink)
williemon Registered User Join Date: Jun 2002 Location: Georgia Posts: 811	Do you need a special tool to hold the cam gears? __________________ 90 4 Runner 4x4 V6 Auto, Westin step bars, Eagle rims, DOA head port and camshaft. 94 Toy truck 4x4 22RE 5sp, 31x12.5 BFG muds, eagle rims, Rancho RS9000s, nerfs, ext. shackles. SOLD http://community.webshots.com/user/williemon

05-17-2004, 10:16 AM	#7 (permalink)
Highland Runner Registered User Join Date: Jul 2002 Location: Highlands, NC Posts: 682	http://www.off-road.com/toyota/tech/v6tbelt/index.html This shows a visual of the job. A lot of steps are not covered. I already had a pulley puller and a torque wrench. I made something to hold the pulley from turning likemrmojorisinphan. Make sure to replace the bearings in the idler pulleys. I didn't, and the upper one took a crap not more than 2000 miles after I did the job. I used an after market belt which now has almost 90k miles. Guess its time to do it again. __________________ Chris Mine-94 SR5 4-Runner, 3.0, 4X4, Aisin Hubs, Yakima Load Warrior, 210k Miles \| Wifes-99 Limited

08-16-2007, 10:51 PM	#8 (permalink)
pyromjm Registered User Join Date: Jun 2007 Posts: 38	is there a way to replace the upper idler pulley without removing the cam sprockets? __________________ '92 4x4 Ex Cab 5 spd 3VZ-E

08-16-2007, 11:22 PM	#9 (permalink)
infiltrator Registered User Join Date: Apr 2007 Location: Valencia, California Posts: 1,304	sounds like a job. i dont know if mine was EVER changed. i have to ask, if not, it would have almost 190k on it! holy crap, i hope it im okay... damn 600 bucks for that!!! i dont have that kind of money either... but if it needs it. you can buy a cheapo 4runner for 600 bucks damn!.... im bummed out... how much is it if you do it? anyone wanna do it for me? ill pay u! (idk how much hahah) southern californa 3 miles from magic mountain!!!! ill get you in! hahahh __________________ Old Rig: '95 4runner \| White \| ISR \| 193,000mi. \| Totalled.

02-07-2008, 09:03 AM	#15 (permalink)
wcc_71 Registered User Join Date: Feb 2008 Posts: 54	i have that same 3VZ-E 3.0 dual over head cam motor in my 92 pickup and i have it apart right now and i am having a hard time finding a water pump for it. the water pump that i took off it was not pumping water. i replaced the thermostat and i took the top radiator hose off and let the truck run nothing but steam came out so i turne the truck off and water started coming out so i shot water through the top radiator hose with it off and it went back through to the radiator so i know its not stopped up. did u have a hard time finding a water pump? everywhere i go tries to give me one for a single cam. and the impellers on the water pump are slapping the water instead of pushing it. can you help me out???? Last edited by wcc_71; 02-07-2008 at 09:27 AM.

05-17-2004, 09:23 AM	#6 (permalink)
mrmojorisinphan Registered User Join Date: Oct 2003 Location: Portland Oregon Posts: 165	its been awhile since I've done this, but as far as the crankshaft pulley, I made my own out of piping I bought at Homebase....It cost like $5 and worked perfectly. basically all I did was buy a 2ft pipe and made two forks about 3" long and about 3" apart from eachother looked like this F stick the two forks in the center of the pulley between the gaps to hold the pulley in place. Its hard to explain but once you see the real tool and the cranckshaft pulley it makes sence.

12-10-2007, 03:16 AM	#12 (permalink)
tweezak Registered User Join Date: Dec 2007 Posts: 2	First post, y'all! I just did the timing belt on my 1990 4Runner 3VZE for the third time. First time was a scheduled belt change, second time was when I was changing the water pump (and just changed the belt while I had the whole thing apart) and this time, the top idler pulley let go at 65. What a mess. Bearings and shrapnel every where. Word to the wise...when you hear a howling coming from the timing belt cover, it is probably the idler. Here is a pic that someone posted showing the whole front right after a timing belt/idler/tensioner/water pump change. These parts will cost you about $270 at Napa. The idler, by the way, is at the top of the picture between the cam sprockets. The timing belt runs under it. The guy at Napa said he has sold many of those idlers over the years and says they are prone to failure on that engine. After seeing mine go ballistic, I'm not surprised. The good news was that there was no damage to the engine or other parts. The water pump and thermostat were just changed in September so I left them alone but typically, I suggest (like others here have mentioned) that they be changed with the timing belt. There were a few things I ran into on this job that I thought I'd pass along that may help someone else down the road. I had a helluva time removing the camshaft sprockets. Your best option...use an air-impact wrench. I don't have one so I had to find other means. The sprockets have never been off this rig and I was working in 29 degree weather and the bolts were stuck hard. I thought about the socket-on-the-bolt trick utilizing the dust shield mounting bolts similar to how 934rnr suggested but in retrospect, I am glad I did not. In the end, I used a cheap version of a balancer puller like this one: I put a bolt in one of the slots and tightened it in the right position with a nut so that it and the center screw were up against two of the "spokes" of the sprocket. I then used a large pipe wrench to hold the balancer puller (and thus the sprocket) while I turned the bolt that secures the sprocket. I got lots of power this way because I was using a long breaker bar and a big pipe wrench but I still couldn't get it to budge. I tried heat and penetrating fluid too. No dice. That's when I did a search and ended up here thinking maybe they were left hand threads. Ultimately, I forced it. I had a buddy come over and he got on one side of the truck and held the pipe wrench with both hands and I pulled for all I was worth on the breaker bar from the other side of the rig. We had tons of leverage and good grip and were applying easily over 200-250 ft-lbs before that beotch finally broke free at which point both of us smashed our elbows. Thank God for strong sockets. I can only attribute this difficulty to the fact that the flange on the bolts is much wider than the bolt head itself. The increased surface area and the fact that the bolts had been there for 200k miles all contributed to the torque required to remove being much higher than the spec'd 80 ft-lb required to install. I'm just glad I didn't round either of them off. For installation, I put a 10mm 3/8 inch deep socket over the dust cover bolt head that is behind the sprocket and held it while my buddy clicked the sprocket bolt to 80 ft-lbs. I am absolutely certain that method would not have worked for removal in my case. As always, YMMV. Anyway...if you are doing the timing belt or water pump and the idler has never been replaced, I'd suggest doing it. The 3VZE is not an interference engine so you don't have to worry about bending valves when the bearing fails but it is a lot more convenient to do the job when you are planning on it. A timing belt kit that I bought at Napa included the belt, a new idler and a new tensioner for a little over $200. This sounds like a lot but the idler is fairly fancy so I don't think it's too far out of line. Hopefully, my experience will help someone else out there. Peace. Keith

02-07-2008, 09:15 AM	#16 (permalink)
Blurr Registered User Join Date: Mar 2007 Location: Orange, CA Posts: 306	for holding the cam sprockets in place for loosening/tightening the bolt, this is the type of tool you need. I'd stay away from chain wrenches: http://www.shoptoolsshoptools.com/shopexd.asp?id=1956 I have seen similar ones on ebay for about $20. Here's a pic of a MAC version of this tool that a local shop let me borrow: __________________ 93 4Runner - 3vz-e. bone stock, HG job done in 8/07. 2001 Sequoia SR5

02-08-2008, 06:18 PM	#18 (permalink)
dutersupy Registered User Join Date: Dec 2007 Posts: 9	is a 3.0 a DOHC???????i didnt think so............

02-09-2008, 12:06 PM	#19 (permalink)
Jay351 Contributing Member Join Date: Feb 2007 Location: maple ridge, British Columbia, Canada Posts: 8,630	the 3vze is SOHC __________________ 91 Pickup - xcab - 5sp - 3.0 - SR5 - 4x4 - 250k \|2.25" catback w/ magnaflow cat + glasspack \| Weasy2k cams \| Aisin manual hubs \| Diff breather mod\| Marlin HD clutch \|3" BL \| es3000's \|2" AAL \|1.5" bj spacers \| ISR \| Alpine headunit \| 4" Infinity fronts/5" rears \| 4.88's \|Rear lockright \| 33x12.50" BFG M/T on 15x8" steelies \|Hella 500's \|4" reverse lights\| Grant GT \|idler arm brace\|hella E-codes\| Marlin armor \|SS IFS brace \| %100 Amsoil synthetic http://www.cardomain.com/ride/2572486

02-13-2008, 02:28 PM	#20 (permalink)
scope103 Registered User Join Date: Sep 2007 Location: San Francisco East Bay Posts: 195	To remove the bolt holding the cam pulley on the 3VZE, you can hold the camshaft using the wrench flats in the MIDDLE of the camshafts. You'll need a 27mm (or a 1 1/16") wrench (doesn't everyone have those?). And (of course) you remove the camshaft cover. Since there is no place to "rest" the wrench (the head is aluminum, and you don't want to dent the camshaft cover sealing surface!) you'll need to cut a notch in a 2x4 to hold the end of the wrench against the side of the truck. When you get the pulleys off, look closely at the 5mm "knock pins" that hold the pulleys to the cams. Mine were bent about 1mm. They are cheap to replace, but the keyway in the pulley was dented too. The two pulleys (left and right) are actually identical, just reversed. By swapping them, the new knock pins no longer touched the dented part.

06-11-2008, 06:22 PM	#21 (permalink)
kwando Registered User Join Date: Aug 2003 Location: Colorado Posts: 71	instead of starting a new thread, i will just bump this thread. Does toyota sell a parts "kit"? Or should i just buy all the parts seperate? If buying seperated, what else do i needs besides: 1. Timing belt 2. Water pump 3. Tensioner?? Thanks in advance! __________________ '94 4Runner SR5

06-12-2008, 09:47 AM	#22 (permalink)
infiltrator Registered User Join Date: Apr 2007 Location: Valencia, California Posts: 1,304	I think he said thermostat too. I think if I did a job like this, I would feel very proud saving myself this money, and a sense of accomplishment . I will probably learn some day. How do you guys learn how to do such things to your trucks? Is it just experience doing it since you were younger? Did someone teach you. What would be your advice to me going into this? Is it something I could do, not knowing everything I should know about my truck? __________________ Old Rig: '95 4runner \| White \| ISR \| 193,000mi. \| Totalled.

08-26-2008, 02:14 PM	#24 (permalink)
Anse Registered User Join Date: Aug 2008 Posts: 5	Timing Belt Problems I’m having a challenge with the timing belt on a truck with this engine. I had to replace the knock sensor. Got it all stripped down and the new sensor is in. The timing belt, tensioners, water pump, etc. were replaced about 5K miles ago, so I’m reusing everything. I tried to shortcut the teardown of the timing belt assembly by just removing the top cover and loosening the belt tensioner. This allowed me to remove the top idler assembly so I could take the intake manifold off without removing the crank pulley and everything else on the front of the engine. I did mark the belt and sprockets so I could reassemble, but in my haste, and like an idiot, I forgot to set the timing at TDC before loosening the tensioner. As soon as there was slack in the belt, the cam position moved on both banks. I did manage to get the belt back on in the correct position (a real bugger), but it seems that the belt is now somewhat tight on the tensioner (passenger side) and loose on the driver’s side on the span below the cam sprocket. I don't even have the spring back on the tensioner yet to adjust the belt tension, which has me concerned about whether or not I have it reassembled properly. Is the slack in the belt on the driver’s side normal? Do you think that I have somehow gotten the belt off by a tooth? I’m afraid I’m going to have to tear down further and remove the crank pulley so I can realign everything, but I’d sure like to avoid this if at all possible. Here's my theory on how to ensure that I get it right with the current level of teardown. If I remove the belt from the cam sprockets, align the notch on the crank pulley with the 0 timing mark, and then carefully rotate and align the camshafts by the same increments (to ensure they are on the same stroke cycle) with the timing marks at the top, verifying that the rotor in the distributor points at the no. 1 cylinder, and then reroute the belt, would I have everything in proper aligment? Am I missing something important in my theory?

08-26-2008, 05:51 PM	#25 (permalink)
scope103 Registered User Join Date: Sep 2007 Location: San Francisco East Bay Posts: 195	Anse - It sounds like you've got it. Because of the spring tension on the cam shaft (from the valves) it tends to not stay put at TDC. Just align the marks on the cam pulleys pointing up, align the mark on the harmonic damper to TDC, AND THEN CHECK you are at TDC, not BDC (remember that the crankshaft turns twice for each turn of the camshafts --slide a wooden chopstick in the #1 spark plug hole; if you hit the top of the piston you're good), and then put on the belt. Not sure it's right? With the tensioner back on, carefully turn the crank two turns. Is everything still lined up? You're golden. If it's off, it will be off at least one whole tooth, and that is easy to see. Lots of new timing belts (but not all) have marks to help line them up; these will help but you should still check. Be aware that these belts have what is called "hunting" pattern; if you turn the crank until the belt-mark comes around and lines up again, the marks on the belt WILL NOT line up with the cam pulleys. That is not a problem. __________________ 1994 6cyl 4wd XCab -- all stock

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