Clunk in Differential
#1
Clunk in Differential
Hi, I have a 89 F150, 4.9 L, with 5 speed manual. The u-joints are new. When I'm driving and upshift and let the clutch out, the differential clunks. The diff. makes no noise, like humming, or anything, just the clunk when the clutch engages. The truck has 104,000 miles, and has pulled a small boat over the years. Someone told me there could be shims put in there to get rid of the clunk (obviously a lot of play). Is there such a thing, or is this an expensive proposition? Thanks
#2
Hi, I have a 89 F150, 4.9 L, with 5 speed manual. The u-joints are new. When I'm driving and upshift and let the clutch out, the differential clunks. The diff. makes no noise, like humming, or anything, just the clunk when the clutch engages. The truck has 104,000 miles, and has pulled a small boat over the years. Someone told me there could be shims put in there to get rid of the clunk (obviously a lot of play). Is there such a thing, or is this an expensive proposition? Thanks
#3
Senior Member
Pull the driveshaft off. Grab the pinion and wiggle. If it has any play, you need a full rebuild. If not, pop the cover off and check the backlash. It should be between .006 - .010. If its not, a shim kit is $20 on Rockauto.
#5
Thanks for the information. since I'm not familiar with the diff, I should have it checked by a shop. While the play many not be a risk at the moment, I can stand to hear that clank when I shift. I doubt that it being low on oil would do that, right? I would think it would be whining or rumbling with low oil, right? Thanks guys