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Does anyone know the pinion nut torque spec ? My rear end has been taken apart twice before as there are 2 different punch marks and also whoever did it the first time left the old pinion seal present so my pinion seal was leaking because there were two of them on the truck . I’m working on a 1986 Toyota 4Runner 5speed 4x4 100% stock
New pinion seal and pinion nut from trail gear
There is no pinion nut torque spec, per se, because the factory assumes that a new crush sleeve will be used every time, and in that case, pinion bearing pre-load will be the controlling factor.
It is my experience that a pinion nut can be tightened to 125-130 foot pounds without crushing the sleeve any more than it already is. This should be plenty tight for service.
Then, some manipulation of the pinion to check for looseness, and feeling for the apparent backlash will tell you a lot about the general condition of your gear set. Good luck!
The fact that you said “good luck” is making me nervous about this pinion seal lol , hopefully I won’t mess it up , I planned on using a torque wrench but unfortunately I can’t find one . I pretty much just need to leave enough slack to twist the flange enough to engage a tooth without it being “too easy” correct ?
The fact that you said “good luck” is making me nervous about this pinion seal lol , hopefully I won’t mess it up , I planned on using a torque wrench but unfortunately I can’t find one . I pretty much just need to leave enough slack to twist the flange enough to engage a tooth without it being “too easy” correct ?
I say 'good luck' only because so many of these gear sets have near half a million miles on them; so sometimes, a leaking pinion seal is only the symptom of other larger problems lurking.
You really ought to lay hands on a torque wrench before attempting this job. Especially as you do not seem too familiar with this work.
I ended up taking it to a buddy of mines’ shop , he knew exactly what to do and assured me that it’s totally fine the way we handled it . The pinion seal was definitely the issue as it was bent in the upper right quadrant . I managed to snap a pic before we threw it back together , unfortunately I didn’t get a picture of the trail gear seal because my hands were covered in wheel bearing grease as was my phone .
Aug 27, 2018 | 10:04 AM
