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New axels are very tight #1201040 03/21/12 08:55 PM 03/21/12 08:55 PM
Joined: Mar 2008 Posts: 724 PA USA F flatiron OP super stock
flatiron OP super stock F Joined: Mar 2008 Posts: 724 PA USA	I recently replaced my stock axels with axels from Dr Diff and green bearings I also went to a spool and replaced all bearings in my 8.75 they turn but are very stiff. I ve also put on my brake drum and wheel and snugged up the lug nuts and it's even harder to turn the wheel by hand(The car is in neutral) Is this normal when going with all new bearings?

Re: New axels are very tight [Re: flatiron] #1201041 03/21/12 10:48 PM 03/21/12 10:48 PM
Joined: Aug 2003 Posts: 43,180 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,180 Bend,OR USA	Disconnect the driveshaft and try that first Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: New axels are very tight [Re: Cab_Burge] #1201042 03/22/12 12:04 AM 03/22/12 12:04 AM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	maybe your new "axels" are the wrong "axles" I am truckless..

Re: New axels are very tight [Re: flatiron] #1201043 03/22/12 12:14 AM 03/22/12 12:14 AM
Joined: Mar 2007 Posts: 3,300 Northern Indiana Dunnuck Racing master
Dunnuck Racing master Joined: Mar 2007 Posts: 3,300 Northern Indiana	I also went to a spool and replaced all bearings in my 8.75 they turn but are very stiff. I would question this before the new axles. I only say this because you don't sound sure of what is going on. Did the pinion turn freely after changing the pinion bearings,then it got hard to turn when the spool was installed? Did everything turn freely before the axles were installed? Just asking to see if you tried it this way as things went together. Keith www.dunnuckracing.com

Re: New axels are very tight [Re: Dunnuck Racing] #1201044 03/22/12 12:42 AM 03/22/12 12:42 AM
Joined: Aug 2003 Posts: 43,180 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,180 Bend,OR USA	Quote: I also went to a spool and replaced all bearings in my 8.75 they turn but are very stiff. I would question this before the new axles. I only say this because you don't sound sure of what is going on. Did the pinion turn freely after changing the pinion bearings,then it got hard to turn when the spool was installed? Did everything turn freely before the axles were installed? Just asking to see if you tried it this way as things went together. Keith Keith has a a point, OP what third member casting number are you using, 741,742 or the dreaded 489 with the crush sleeve? it makes a difference Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: New axels are very tight [Re: flatiron] #1201045 03/22/12 10:25 AM 03/22/12 10:25 AM
Joined: Jan 2003 Posts: 2,734 Charlotte, NC 4 446acuda master
446acuda master 4 Joined: Jan 2003 Posts: 2,734 Charlotte, NC	Also a spool and green bearing are much less forgiving than a differential and stock bearings when you have a bent housing. If there are no center section issues then I would start looking for a bent housing by using a housing narrowing jig.

Re: New axels are very tight [Re: Cab_Burge] #1201046 03/22/12 04:50 PM 03/22/12 04:50 PM
Joined: Mar 2008 Posts: 724 PA USA F flatiron OP super stock
flatiron OP super stock F Joined: Mar 2008 Posts: 724 PA USA	Quote: Quote: I also went to a spool and replaced all bearings in my 8.75 they turn but are very stiff. I would question this before the new axles. I only say this because you don't sound sure of what is going on. Did the pinion turn freely after changing the pinion bearings,then it got hard to turn when the spool was installed? Did everything turn freely before the axles were installed? Just asking to see if you tried it this way as things went together. Keith Keith has a a point, OP what third member casting number are you using, 741,742 or the dreaded 489 with the crush sleeve? it makes a difference iT'S A 489 with the sleeve to elimante the crush sleeve. I found part of the problem the counter bore in the new drum was tight up against the backing plate. So it looks like I may have to shim the drum out a bit from the axel flange. The assembly is still fairly tight even with out the drum. I also guess my lack of experince doesn't help either. I just expect things to turn more freely

Re: New axels are very tight [Re: flatiron] #1201047 03/22/12 05:00 PM 03/22/12 05:00 PM
Joined: Jan 2003 Posts: 3,575 The Netherlands BigBlockMopar master
BigBlockMopar master Joined: Jan 2003 Posts: 3,575 The Netherlands	Maybe the guy who installed and setup the new bearings has put too much preload on the bearings? I just installed a pair of DrDiff-axles in my self-narrowed 8-3/4" A-body housing and yes, everything feels 'tight', but not hard to turn or feel like binding. Have your drums, brakes and rear axle checked over by someone experienced. Spacing out a drum for it to clear the backingplate sounds flakey in more ways then one. Something's not right. BigBlockMopar.com

Re: New axels are very tight [Re: BigBlockMopar] #1201048 03/22/12 09:10 PM 03/22/12 09:10 PM
Joined: Mar 2008 Posts: 724 PA USA F flatiron OP super stock
flatiron OP super stock F Joined: Mar 2008 Posts: 724 PA USA	The groove in the back side of the brake drums where not machined deep enough.

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