David

I have a 98 4runner and I need to replace the rear axle seals,could some body please tell me what parts are needed to do the complete job.

I already have new shoes but what else?

keisur

you gonna replace the bearing and the outer seal too? or just the inner seal? I can give you all the part numbers you need to get the right parts, I've done the drivers side 3-4 times myself and the passenger side once myself, I replaced the whole axle assembly on the drivers side, that is, everything that pulls out once the four housing flange bolts are remove and the wheel cylinder disconnected.

keisur

Parts needed for both inner and outer seal: {and the price I paid}

• 90310-50001 $3.53 Inner Seal
• 90313-48001 $2.90 Outer Seal
• 90363-40020 $39.18 Bearing
• 90301-88077 $2.52 O-Ring
• 90520-36045 $1.12 Snap-Ring
• 42423-20010 $10.99 Retainer Ring (you need two if you have ABS)
• 43517-35010 $30.29 Rotor, Skid Control (ABS rotor, only if you have ABS)

That should be all the parts to do both seals. I have reused a bearing before but if you can afford a new one, might as well replace it too if you are going to press it off anyway. make sure you get the spacing of the abs rotor and the last retainer to go on the shaft right as the rotor teeth need to line up with the speed sensor hold on the housing and the retainer needs to seal on the inner seal, and if you don't get it pressed on far enough, as I did once, the retainer will bind on the lip inside the housing and drag when the wheel is turned. I had to pull the thing back off and put ir back in the press to push the retainer down another 32nd".

EDIT: Now, you say you have new shoes. Are they already installed or are you waiting until you do the seals? reason I'm asking is because if the leak is bad then the shoes are probably saturated and will need to be replaced, sounds like you already have them sitting in a box waiting for the seal job so you should be set but I just wanted to clarify.

RidgeRunner

I was wondering, re: rear axle seal replacement for 3rd gen, has anyone noticed a connection with leaking seals/sythetic gear lube? In other words, are most replacements from dino gear oil or are many from sythetic gear oil?

Just wondering if it's smart to replace rear diff gear lube with synthetic on a 3rd gen?

Any thoughts?

Mick

gwhayduke

I would recommend having the dealer do it.

I did my own, then the right rear started leaking again. So I had the dealer do it the second time, just in case I did something wrong. Guess what, I didn't do anything wrong and they're leaking again. This time it will be on the dealer's nickel since Toy dealers guarrantee everything for a year after the repair. I know because I've already had the dealer replace the rear output shaft on the transfer case once on my nickel and twice on theirs.

ravencr

Hey Keisur,

Is that list of parts to replace all the stuff needed for one side or both? If only for one side, what are good things to buy double of in case I screw up? Also, if it is for only one side, are the part numbers the same for both sides?

Thanks,

Chris

P.S. Is there a write up anywhere on this process? I'd love to read it!

keisur

that's for one side. I usually buy 3 inner seals just incase I mess one up while driving it into the housing. now I just buy one each time because I have 3 spares. be sure to replace your oring though, when you take it off you'll see that it no longer has a round x-section but it has a triagular one. they're cheap so I have two on hand, the extra actually came in handly when the drive belt/spring on my 60's 8mm film projector broke so I used one of the orings as a drive belt, perfect size and we got to watch our 70's christmas home movies, .

L33T35T 4Runner

why yes, yes there is a write up, and an excelent one at that

here it is

https://www.yotatech.com/~corey/tech...m1_oilseal.htm

ravencr

Guys, that's awesome information! Where's the best place to buy the parts? I can get them from my local toyota shop for 25% over cost, because I work at a Nissan dealership. Would it be better to do that or buy it over the net from somewhere aroudn 20% over cost, from what I've seen?

Chris

ravencr

So what's the best brake fluid to buy? I guess I'll buy that Motive brake bleeder thing that Gadget recommends. Did you guys use it too?

Chris

keisur

That's only for the inner seal, the outer seal requires alot more elbow greez and alot more time.
Try these:

http://www.off-road.com/toyota/tech/rearaxleseal/
-and-
http://128.83.80.200/taco/rwb3.html

ravencr

Is there a write up for the inner and outer seal, that demonstrates the use of the partsthat you listed, Keisur? How do I know which seal it is, anyway, that's leaking?

Chris

keisur

http://www.off-road.com/toyota/tech/rearaxleseal/
-and-
http://128.83.80.200/taco/rwb3.html

keisur

if there's grease inside the drum, it's both. if there's is only grease leaking out between the bearing flange and the housing flange, which is unlikely, it's the inner seal and the oring. the oring should prevent this sort of leaking and the fluid will most likely seep past the outer and into the brake drum and spit all over the brakes and saturate them. what I did was pull everything apart and even knocked the studs out and replaced the paper gasket between the deflector and the axle flange because it was saturated too and I didn't want the grease coming out of that and getting on the shoes. one hit and the studs popped out with a ballpean hammer. then I used a couple washers and an old lug nut and the impact wrench to reinstall the studs. you could do that with a regular socket wrench but since I had air tools... I actually forgot to buy a new gasket so I traced to old one onto a nike shoe box lid and cut it out and used it as the gasket. seems to have worked .

keisur

oh yea, I didn't have any SST's either. I went to homodepot and found stuff that would work and made my own SST's. Tomorrow I can take pics of the parts I got to use as my own SST's if you want.

ravencr

What's the SST's?

Chris

Thanks for the links!

keisur

Special Service Tools. Basically they are weird looking tools that are meant for one thing. In the links they talk about a couple of them but home depot has things that do the same thing, it's just they are meant for running conduit and plumbing stuff. I'll get the camera tomorrow and I have an extra axle and retainers and bearing cup that I can load up on the press and snap a photo of it all to sort of show you the set up.

ravencr

Sweet man! Thanks for all the help on this. You've been great!

Chris

ravencr

Hey Keisur,

Where's you buy the parts in your list? Toyota is a rip as usual. I can get them for 25% over cost, but where you get yours so cheap?

Chris

keisur

I got mine from Jesse Sierra at Stirling McCall. he gave me internet pricing and let come pick up the parts since I'm only 10 miles away. none of the closer stealers would do that because most are greedy. I don't particularily care for the guy though because I order some fasteners for my hood protector that I broke when I took it off to wax last year and he was supposed to have them drop shipped to me. well, I've emailed, called, gone over there, he's never in and 11 months later I still don't have my fasteners. not worth the $2 they cost to make a trip over there but with business practices like he has I won't ever order anything from him again. I order everything from the online oem parts dealers now like 1sttoyotaparts and toyotaparts4u or whatever that is. the prices are about the same and I don't pay tax, just shipping.