Gear engages with a slight thunk/thump when cold

earthrealm

Senior Member
Just observed an issue on my truck, not sure if it has been there all along, when i drive the car in the morning after sitting all through the night, when i engage reverse {my usual routine], it engages with a slight thunk/thud....which to my ears seems more pronounced from the front passenger [shaft area]. changing gears again from reverse to drive...same thing occurs.......this only happens in the morning, other times it doesnt happen.

sometimes i feel it might be the drive shaft lube issue, cos sometimes while driving and accelarting/decelating...i still get a slight lag/thump from the transmission.

i got under the car and checked...both of my cv boots are torn with grease splashed everywhere, with the passenger side being almost bone dry. i bought cv axle shafts from rockauto and intend swapping out the shafts, while i buy a cv rubber kit and repair the old shafts to keep as spare.

am wondering what else i could check for?. the mechanics in my neck of the woods arent so good, so i rather figure this out on my own than having them play a guessing game with my truck.
 
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grease the slip yoke at the rear of the UV joint. pump that sucker full of grease until you get some running out. that's the thump you're feeling.
 
OK, THANKS...WILL DO THAT N SEE WHAT HAPPENS...together with the shaft i intend to replace...my truck should be in pretty good shape.
was able to see only 4 nipples.....talk on the forum says it should be 6 nipples :)
 
lub2.gif~original


Also, this thread in maintenance has pics:

http://www.toyota-4runner.org/maintenance-detailing/28414-07-v8-4x4-zerk-fitting-pics.html
 

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