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84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

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Old 12-17-2006, 08:56 PM   #1
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1984 22R Crank pulley slinging oil

I just bought an '84 that is leaking oil around the Crank pulley. It is slinging oil onto the skid plate.

I changed the oil recently upon purchasing with Chevron 10w-30. I accidentally over-revved to 7k. That's when I noticed the oil.

Have I blown a Crank seal? What is involved in changing this?
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Old 12-17-2006, 09:19 PM   #2
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WT*!!! accidently overevved to 7k?? are you sure its just slingin oil and not about to blow up? if you need a new front seal i got a brand new one for a 22r. to change the seal you pull off the belts, then the bottom pulley which you need to take off the skidplate to get to it, then take off the big center bolt which is the only pain in the butt. then you can pry out the old seal if thats what it is. if it isnt then it might be the oil pump seal. Try running regular castrol gtx oil, its the best for these engines.
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Last edited by deserttoy84; 12-17-2006 at 09:24 PM.
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Old 12-17-2006, 09:32 PM   #3
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Quote:
WT*!!! accidently overevved to 7k??
That was my next question; will our engines go that high? My tach is a little jumpy/bouncy, so it may not have been that high. It may have overshot itself but the needle definetly hit 7k.
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Old 12-18-2006, 10:49 AM   #4
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Quote:
Originally Posted by SLC97SR5 View Post
That was my next question; will our engines go that high? My tach is a little jumpy/bouncy, so it may not have been that high. It may have overshot itself but the needle definetly hit 7k.
yes they will my 22r used to hit 7k back in the day and its still running
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Old 12-18-2006, 02:41 PM   #5
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The front seal would be the black part you see on the front of the oil pump.
Click the image to open in full size.
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Old 12-19-2006, 12:26 AM   #6
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Thanks guys, I've pressure washed the skid plate and after a 15min drive home not going over 5k I noticed a very light spray on the skid.

Sounds like it's not too bad...what's the torque on the crank nut?
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Old 12-19-2006, 11:14 AM   #7
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116 ft-lbs
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Old 12-19-2006, 11:47 AM   #8
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^to put it on. to take it off its ~ 5000 ft-lbs
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Old 12-19-2006, 12:00 PM   #9
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Just put a long breaker bar with a socket on the ground MAKE SURE IT IS TOUCHING THE GROUND ON THE DRIVERS SIDE, pull the coil wire that goes to the distributer. Crank motor for a short burst. Crank bolt will be loose. Remove breaker bar and socket after tightening back up and before starting.
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Old 12-19-2006, 01:18 PM   #10
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check the oil pump o ring too. its a little tricky to get back in the groove on the timing cover but if you use a little grease it will help it stick a little better.

as for the pulley , you might need to get a repair sleeve also. its a metal sleeve that goes over the pulleys seal mating surface to keep any grooves worn into the surface from damaging the seal.
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Old 12-24-2006, 10:19 PM   #11
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Would this leak be a good canidate for some Lucas? What "stop-leak" products have you guys had success with?
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Old 12-25-2006, 07:22 PM   #12
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You might need to put a sleeve on the seal side of the crank pulley. If the crank seal is worn or the crank pulley has a groove worn in it, no stop leak will fix it.

Last edited by 4runnerx3; 12-25-2006 at 07:23 PM.
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Old 12-25-2006, 09:05 PM   #13
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I replaced that seal many years ago and no leaks since then. I did not have a groove.

Went to Pep Boys and they have a kit with all the parts. In fact I think there were more gaskets then were actually needed. Might have been for the water pump.

Getting the bolt off is the trick. I used the breaker bar method. Do pull the coil wire. Getting the bolt back on and torqued is also a trick. It has been so long. I think I had the radiator out and used an electric impact. It think that bolt gets tighter as the engine runs. I was not able to use a torque wrench because the crank would move even with the manual transmission in gear.

I would not put any crap in the oil to fix a worn seal.

My local wrecker has this engine on a stand. You can see the seal.

Click the image to open in full size.

Last edited by Tool Pants; 12-25-2006 at 09:09 PM.
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Old 12-26-2006, 10:09 AM   #14
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Hey thanks for all the great pic's&tips guys!! I'll let you know when I do this.
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Old 09-04-2007, 11:35 PM   #15
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Long term update:
The seal quit leaking about 2 weeks after I posted this, I didn't use any stop-leak or Lucas. I'm guessing after sitting a year the seal may have shrunk/driep up and after several hot/cold cycles it started doing it's job.
Regardless, thanks to all who responded.
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Old 09-05-2007, 07:25 AM   #16
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Thats good. If it ever starts leaking again then just replace the seal. a bottle of stop leak seriously would cost more money then buying the seal.
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Old 09-05-2007, 08:24 AM   #17
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Quote:
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Thats good. If it ever starts leaking again then just replace the seal. a bottle of stop leak seriously would cost more money then buying the seal.
Does that Lucas stuff actually work? Personally, I don't believe in all that leak-stopper/additive crap. If it's leaking, somethings wrong.

And if there's a chemical chunky enough to stop a leak, I don't want it near my valves!!!
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Old 09-05-2007, 08:50 AM   #18
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it works alright. If you got a really old motor using a bunch of oil then i would use it.But if your motor is in good shape i would just fix whatever is leaking. only thing ive ever put in my engine was seafoam to clean it out(crankcase and intake)
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Home made On-board air system
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Old 09-07-2007, 10:24 PM   #19
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I know you already have the problem fixed, but for future readers, the crank seal is easy to replace. The hardest part is messing with the belts. As far as sleeves go, there is really no need for them. If you buy a replacement from Toyota, the gasket is ~2mm shorter, placing the seal on a fresh, non grooved surface. Napa replacement main seals are like this too.
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Old 09-11-2007, 11:05 PM   #20
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If you plan on mudding this truck you should replace this seal! Its really not that hard to do. I ran my truck into a three foot deep clay pit in the pine barrens in NJ and it made that very same seal leak. I went from no leaks to lossing all my oil in two days. I went to pepboys and bought that front gasket kit thinking it was the timming chain cover. After six hours in my front driveway i was good to go.
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Old 09-11-2007, 11:05 PM
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