Pinion Bearing
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Pinion Bearing
Hi
I have a 1993 F350 that the tranny shop says front pinion bearing is worn out and wants $350 labor to replace. My question is this seems to be relatively simple if the bearing is removable from front and does not require removal of the pinion gear.
Any info on front bearing replacement is appreciated. It is a 10.25 dif.
Thanks
I have a 1993 F350 that the tranny shop says front pinion bearing is worn out and wants $350 labor to replace. My question is this seems to be relatively simple if the bearing is removable from front and does not require removal of the pinion gear.
Any info on front bearing replacement is appreciated. It is a 10.25 dif.
Thanks
Senior User
Joined: Aug 2003
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From: Chestermere,Alberta
Just make sure they replace both pinion bearings.It is not hard to do yourself,you just need the tools to do it. If it was me I would be replacing both pinion and side carrier bearings.Clean out the diff really well and fill her up with fresh fluid and friction mod.
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From: Easton,Ks
Originally Posted by garyh8
Hi
I have a 1993 F350 that the tranny shop says front pinion bearing is worn out and wants $350 labor to replace. My question is this seems to be relatively simple if the bearing is removable from front and does not require removal of the pinion gear.
Any info on front bearing replacement is appreciated. It is a 10.25 dif.
Thanks
I have a 1993 F350 that the tranny shop says front pinion bearing is worn out and wants $350 labor to replace. My question is this seems to be relatively simple if the bearing is removable from front and does not require removal of the pinion gear.
Any info on front bearing replacement is appreciated. It is a 10.25 dif.
Thanks
Your pinion nut may be just loose.
A loose pinion nut will cause a noise when power is applied or holding the speed but no noise when slowing down and when you take your foot off the throttle.
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The rear end makes noise when accelerating and decelerating and can best be heard in 4th and 5th gears.
The tranny shop diagnised by putting on lift and listining with stethascope?? so I am unshure if they are trying to sell me a job or not. I have found out this shop tries to upsell a complete tranny or rear end rebuild with every job. I will definately check the torque on the pinion nut
Thanks
The tranny shop diagnised by putting on lift and listining with stethascope?? so I am unshure if they are trying to sell me a job or not. I have found out this shop tries to upsell a complete tranny or rear end rebuild with every job. I will definately check the torque on the pinion nut
Thanks
Junior User
Joined: Jun 2006
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There's no reason for that pinion bearing to come loose. If it is loose, that mean that in fact, the pinion bearings are worn.
Keep in mind, any changes made will affect your pinion depth which will likely wear out your ring and pinion faster.
To fix this problem, the whole differential needs to be torn down and the backlash/ pinion depth needs to be reset.
you'll need:
1. 2 pinion bearings
2. pinion spacers
3. crush washer
4. pinion nut
5. 2 diff bearings
6. diff spacers
$450 sounds like a very good deal
Keep in mind, any changes made will affect your pinion depth which will likely wear out your ring and pinion faster.
To fix this problem, the whole differential needs to be torn down and the backlash/ pinion depth needs to be reset.
you'll need:
1. 2 pinion bearings
2. pinion spacers
3. crush washer
4. pinion nut
5. 2 diff bearings
6. diff spacers
$450 sounds like a very good deal
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
Originally Posted by garyh8
The rear end makes noise when accelerating and decelerating and can best be heard in 4th and 5th gears.
The tranny shop diagnised by putting on lift and listining with stethascope?? so I am unshure if they are trying to sell me a job or not. I have found out this shop tries to upsell a complete tranny or rear end rebuild with every job. I will definately check the torque on the pinion nut
Thanks
The tranny shop diagnised by putting on lift and listining with stethascope?? so I am unshure if they are trying to sell me a job or not. I have found out this shop tries to upsell a complete tranny or rear end rebuild with every job. I will definately check the torque on the pinion nut
Thanks
Is the noise sound like gear noise or bearing noise?
All of the parts for the carrier area come in a kit for about $100.00.
The kit will come with shims but use the old ones as when you use new bearings you take it back to the setting that Ford used. The only time you need new shims is if you replace the Ring & Pinion.
So you need no special tools for the job other than an inch pound torque wrench for setting the torque on the Pinion nut.
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Originally Posted by bigblack302
There's no reason for that pinion bearing to come loose. If it is loose, that mean that in fact, the pinion bearings are worn.
Keep in mind, any changes made will affect your pinion depth which will likely wear out your ring and pinion faster.
To fix this problem, the whole differential needs to be torn down and the backlash/ pinion depth needs to be reset.
you'll need:
1. 2 pinion bearings
2. pinion spacers
3. crush washer
4. pinion nut
5. 2 diff bearings
6. diff spacers
$450 sounds like a very good deal
Keep in mind, any changes made will affect your pinion depth which will likely wear out your ring and pinion faster.
To fix this problem, the whole differential needs to be torn down and the backlash/ pinion depth needs to be reset.
you'll need:
1. 2 pinion bearings
2. pinion spacers
3. crush washer
4. pinion nut
5. 2 diff bearings
6. diff spacers
$450 sounds like a very good deal
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Junior User
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Originally Posted by MisterCMK
The only time you need to worry about re-shimming is if you change the axle housing, ring/pinion or carrier. Simply replacing the pinion bearings won't require you to re-shim.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by bigblack302
that's wrong. The thickness of the bearing and race and how the bearing and race seat effect pinion depth. So unless you get a set of bearings that are EXACTLY the same, the pinion depth will change. Therefore, re-shiming is necessary
Replacement bearing are made to exactly the same close dimensions as the originals.
I have yet to find a replacement bearing with different dimensions.
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