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#1 |
Registered User
Join Date: Sep 2003
Location: Atascadero, CA.
Posts: 149
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how much play should be in the rear driveline?
crawled under my truck yesterday and I was playing with the drive shaft with the tranny in N. I have about 3/4 of play when I turn the drive shaft from the rear axle to the back of the transfer case. Is this bad?
when ever I go in to reverse or Drive you can hear the CLUNK. sounds like crap, how do I attend to this?
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84 Silverado, |
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#2 |
Registered User
Join Date: Aug 2002
Location: Porterville,Ca.
Posts: 118
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It's time for NEW U-Joints,
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#3 |
Registered User
Join Date: Sep 2003
Location: Atascadero, CA.
Posts: 149
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I was thinking it might be the u joints but they have no play at all...
the guy who is selling the truck told me that the posi is the reason for the play, can this be so? the play seems to start at the transfer case and continues to the diff. what is giving more?
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84 Silverado, |
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#4 |
Registered User
Join Date: Mar 2003
Location: Walker, LA
Posts: 2,925
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It's due to "slack" in the rear end itself. I had this problem in mine. Changed to an Eaton posi and now it does not do it. I think this is a common thing among older Chevy trucks.
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Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels |
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#5 |
Registered User
Join Date: Sep 2003
Location: Atascadero, CA.
Posts: 149
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ummm, the Eaton posi on mine was installed a year ago, and I guess its doing it worse now than before, how do I adjust for the slack?
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84 Silverado, |
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#6 |
Registered User
Join Date: Nov 2002
Location: Toronto, Ontario
Posts: 85
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Do you like working on differentials? I hope so, cuz if the differential is the problem you're going to be shimming and adjusting enough to make you want to sell the truck! If it is in the differential, it's because the ring gear is too far away from the pinion. Get the shim pack out!!!
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
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#7 |
Registered User
Join Date: Sep 2003
Location: Atascadero, CA.
Posts: 149
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How much do you think it would cost for someone to adjust my diffrential?
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84 Silverado, |
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#8 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Mucho denairo
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#9 |
Registered User
Join Date: Nov 2002
Location: Toronto, Ontario
Posts: 85
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Find some specs on backlash, and get yourself a dial gauge. Check the backlash by moving the pinion. If it's out of spec, it's the ring gear. First of all open up the rear cover and look for obvious damage and play. Maybe it's a bearing...
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
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#10 |
Registered User
Join Date: Dec 2002
Location: Hills of Western Mass
Posts: 626
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My advice is become one with the clunk. Mine has been doing it for years!
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86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! |
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#11 | |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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#12 |
Registered User
Join Date: Sep 2003
Location: Atascadero, CA.
Posts: 149
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from park to reverse it goes CLUNK
from Reverse to Drive it goes CLUNK and vise versa
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84 Silverado, |
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