9" Pinion Gear preload...
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From: Tinker AFB
9" Pinion Gear preload...
Ford 9" rear... pinion gear preload, I've read about 20-22 in lbs.
Now... I replaced the pinion seal a few weeks ago and I over tourqed the pinion nut... not realizing there was such thing as preload... that'l teach me not to read a manual or check here first. So I find out this steel spacer is probably compressed against the bearings and sure enough it was ... very tightly I might add.
So now... I bought a new spacer, which is thicker than the one I pulled out... because it was worn from over torquing-preloading.
I replaced it with a new spacer and tried to reset the preload but the front bearing bottoms out against the race before the spacer settels in against it and the rear bearing....there is quite a bit of play between the spacer and the two bearings.
I looked at the bearings and they seemed ok... to the untrained eye... Is it possible that the bearings were compressed to the point of no return ?
I'm going to look at pinion rebuild kit, hopefully that is all it needs .
Any advice from you gearheads... no pun intended... would be greatly appreciated.
FOMOCO
Now... I replaced the pinion seal a few weeks ago and I over tourqed the pinion nut... not realizing there was such thing as preload... that'l teach me not to read a manual or check here first. So I find out this steel spacer is probably compressed against the bearings and sure enough it was ... very tightly I might add.
So now... I bought a new spacer, which is thicker than the one I pulled out... because it was worn from over torquing-preloading.
I replaced it with a new spacer and tried to reset the preload but the front bearing bottoms out against the race before the spacer settels in against it and the rear bearing....there is quite a bit of play between the spacer and the two bearings.
I looked at the bearings and they seemed ok... to the untrained eye... Is it possible that the bearings were compressed to the point of no return ?
I'm going to look at pinion rebuild kit, hopefully that is all it needs .
Any advice from you gearheads... no pun intended... would be greatly appreciated.
FOMOCO
Thread Starter
|
Freshman User
Joined: Dec 2000
Posts: 37
Likes: 0
From: Tinker AFB
9" Pinion Gear preload...
Well, I had hoped to catch someone online before I started this adventure... luckly for me I had a good shop manual. I bought a rebuild kit for $90... what a rip off but the bearings alone were $76 so I managed to save a few dollars by going with the kit.
Anyway, I pulled out the pinion gear and started... removed all the bearings and their associated races... pound pound.
Put everything back together... and torqued the pinion nut to 175ft lbs as the manual stated... then I checked the pinion preload and BAM... it was dead on 10-20 in lbs of freewheel with the pinion out of the carrier.
Everything is back together now and I still hear a sqweek sqweek when it's rolling... not sure if its from the rearend or not ...I'm hoping not.
Will investigate further on another day... got beer to drink now.
Later gearheads
FOMOCO
Anyway, I pulled out the pinion gear and started... removed all the bearings and their associated races... pound pound.
Put everything back together... and torqued the pinion nut to 175ft lbs as the manual stated... then I checked the pinion preload and BAM... it was dead on 10-20 in lbs of freewheel with the pinion out of the carrier.
Everything is back together now and I still hear a sqweek sqweek when it's rolling... not sure if its from the rearend or not ...I'm hoping not.
Will investigate further on another day... got beer to drink now.
Later gearheads
FOMOCO
