PETDOC

I own an '88 4Runner SR5 with 22RE, 4WD and a 5 speed manual transmission. It has 365,000 miles and just recently developed a periodic clang from the rear when I take off from a stop. I also have noticed a subtle grinding noise which I can hear and feel through the gas pedal. I feel almost certain one of my U-joints is going out. My intention is to replace all of the U-joints, but am uncertain of the parts I need. Based on looking at ROCK Auto's web site it appears I need 4 U-joints, but 2 different types:

3 Moog/Precision #285 (greaseable Super Strength) for the
1. rear drive shaft at rear axle
2. front drive shaft at front axle
3. rear drive shaft at transmission

1 Moog/Precision #513 (Premium) for front drive shaft at transfer case

I have 3 questions.
Am I correct regarding the number and types of U-joints?
Does it matter that the U-joint for the front drive shaft at the transfer case is not greaseable?
Are there any other parts I will need to order to replace the U-joints?

Never replaced U-joints before, any advice would be welcomed. Thanks
Dave

abecedarian

You have 3 u-joints on the front axle, or more correctly one u-joint at the differential and a Cardan joint, also known as a constant-velocity joint, at the transfer case.


The Cardan joint requires two 513's. The other joints should be the same.


Be prepared to take the shafts to a machine shop to have them pressed out; some 4R didn't use the spring clips and the joints were pressed into the yokes.

PETDOC

Thanks for the feedback. Unfortunately my certainty of a bad u-joint spindle has greatly decreased. I now believe it is my right rear wheel bearing that is going out. Clunking noise when I turn to the left and constant grinding noise/sensation. Pushing in the clutch nor running in neutral down a hill has any effect on noise.
Question: I have greased the u-joints every 10,000 miles since the car was new. Would it be wise to change them even if still good because of my mileage (365,000)?

rattlewagon

Only change them if they are worn out. No need to fix something that isnt broken.

U-joints can be a pain. The caps are often very stubborn on coming out.

Rear wheel bearings are fun too!

http://www.4x4wire.com/toyota/mainte...wheel_bearing/

PETDOC

Rattlewagon,
Been there, done that. U-joints feel fine. I really believe I have a bad right rear wheel bearing. I dropped 4runner off at local mechanic. He said he'd check it out and if bad would replace the wheel bearing for $150 if I provide parts. I don't have a press and don't want to slam the rear drive shaft onto the ground to get old bearing off so it's easier to use mechanic on this.
Question remains--assuming my U-joints are good, as I believe they are, would it be wise to replace them knowing they have 365,000 miles on them?

scope103

No. Seriously.

Given that they have been hanging out in the crud for 26 years, it may be VERY hard to get them out. And in the process you could damage the drive shaft.

A failing universal joint is unlikely to strand you. If it's good now, wait until it's not good before you mess with it. You may have to wait a long time.

Of course, YMMV.