clunk when going into gear
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New User
Joined: Oct 2004
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clunk when going into gear
I have a 96 bronco 351 4x4...when shifting into drive...it clunks....after stopping..and still in gear....it clunks again....I have checked the driveshaft and u-joints....any ideas that I might try??...
Junior User
Joined: Nov 2004
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blk, if the dshaft and u joints are all in good condition pull the rear end cover and take a look at the carrier and pinion pin. The high milage trucks would develop a lot of clearance between both where in time the pin would oblong the carrier. Most of the time this would also break the pinion pin retaining bolt and make the carrier difficult to remove. While in there also check all bearings, A failed pinion or carrier bearing would also cause this clunk though you would think you would be able to hear a backlash whine at speed if this was your failure. Also look at the spider gear set and washers. Lots of the spiders will also oblong ont he pinion pin and cause the same clearance issue.
Lastly, there have been issues where the final drive planetary in the transfercase have worn out planet gear pins and develop alot of play. You can normally feel this with the d shaft out and attempting to turn the output flange side to side.
Hope it gives you a starting point, i would look toward the rear end first.
Lastly, there have been issues where the final drive planetary in the transfercase have worn out planet gear pins and develop alot of play. You can normally feel this with the d shaft out and attempting to turn the output flange side to side.
Hope it gives you a starting point, i would look toward the rear end first.
Lead Driver
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
Like Joboo said.....I would check the T-Case. Also check the slipjoint on the rear driveshaft. Cut the clamp off of one end of the boot over it, slide it out of the way and lube the slip joint. May be easier if you remove the back end of the drive shaft from the diff first. Then re-clamp the boot in place with a good zip tie.
Senior User
Joined: Oct 2001
Posts: 268
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From: North Texas
This "clunk" thing gets brought up, what? Once a month? Once a week?
99 times out of 100, if you're getting a distinct going into gear, or going from drive to reverse, it's rear driveshaft slipspline problem.
That splined shaft likes to be greasy, and the Zerk fitting doesn't necessarily get the grease everywhere it's needed.
BillyBob gives the right way ot do it if you've got a boot over the splines. Otherwise, fully extend the shaft and grease everything.
Oh, BTW: remember to put rock behind a wheel before you pull the driveshaft loose...
99 times out of 100, if you're getting a distinct going into gear, or going from drive to reverse, it's rear driveshaft slipspline problem.
That splined shaft likes to be greasy, and the Zerk fitting doesn't necessarily get the grease everywhere it's needed.
BillyBob gives the right way ot do it if you've got a boot over the splines. Otherwise, fully extend the shaft and grease everything.
Oh, BTW: remember to put rock behind a wheel before you pull the driveshaft loose...
