Four wheel parts forgot to put in differential fluid

QwikKotaTx

Well-Known Member
Joined
Feb 8, 2022
Threads
7
Messages
370
Reaction score
449
Location
Houston, TX
Vehicle(s)
2002 Dodge Dakota T56, 2015 Hemi Ram
Why would the pinion bearing fail first at low speed around the property? They are pretty beefy roller bearings and only an idiot would put them in without some oil on them.
 

grimmjeeper

Well-Known Member
First Name
Roy
Joined
May 6, 2021
Threads
7
Messages
1,474
Reaction score
7,695
Location
Castle Rock, CO
Website
www.grimmjeeper.com
Vehicle(s)
2021 Wrangler, 1987 Comanche, 1997 F250
Build Thread
Link
Occupation
enginerd
Why would the pinion bearing fail first at low speed around the property? They are pretty beefy roller bearings and only an idiot would put them in without some oil on them.
Well, it was 4 Wheel Parts. So...
 

whiskey jack

Well-Known Member
First Name
marty
Joined
Feb 15, 2020
Threads
6
Messages
139
Reaction score
394
Location
myrtle beach
Vehicle(s)
jl
Wouldn't you be able to tell if those gears were never exposed to oil? I mean if they're bone dry, no oil was ever added. Even if it all leaked out, there would still be oil residue all over the place.
 
OP
OP
Skyvet

Skyvet

Well-Known Member
First Name
Jack
Joined
Jul 6, 2021
Threads
3
Messages
58
Reaction score
59
Location
Bakersfield CA
Vehicle(s)
2021 JLUR Diesel
UPDATE: I went in there today with just the pic of the damage and talked to the shop manager. He didn't give me a hard time at all. Ordered the parts and will install tomorrow at N/C. I'll haul it down there on my flatbed. While there I am going to have them do the alignment as well as bleed the brakes properly as I had run the system dry of fluid (OMG another fluid issue hahaha) while the calipers were off and now they won't fully bleed without either a scanner or maybe taking the Master off and bench bleeding. As it is currently 113 here and I only have a swamp cooler I figure they can do it for me. Anyway, I appreciate all the feedback. Lesson learned--never trust anyone else's work without double checking.
 


DesertsJL

Well-Known Member
Joined
May 27, 2018
Threads
4
Messages
163
Reaction score
272
Location
Utah
Vehicle(s)
JLUR
Awesome to hear that the outcome is going to be in your favor!!
 

word302

Well-Known Member
Joined
Sep 13, 2017
Threads
10
Messages
4,484
Reaction score
4,867
Location
Oregon
Vehicle(s)
JLU
UPDATE: I went in there today with just the pic of the damage and talked to the shop manager. He didn't give me a hard time at all. Ordered the parts and will install tomorrow at N/C. I'll haul it down there on my flatbed. While there I am going to have them do the alignment as well as bleed the brakes properly as I had run the system dry of fluid (OMG another fluid issue hahaha) while the calipers were off and now they won't fully bleed without either a scanner or maybe taking the Master off and bench bleeding. As it is currently 113 here and I only have a swamp cooler I figure they can do it for me. Anyway, I appreciate all the feedback. Lesson learned--never trust anyone else's work without double checking.
Dude, you’re going to let them touch your brakes now? You crazy.
 

TX_Ovrlnd

Well-Known Member
Joined
Jun 23, 2018
Threads
3
Messages
1,738
Reaction score
3,488
Location
TX
Vehicle(s)
'22 Zilver JLURD
Occupation
freethinker
I would definitely not let a 4WP “mechanic” touch my brakes.
 


OP
OP
Skyvet

Skyvet

Well-Known Member
First Name
Jack
Joined
Jul 6, 2021
Threads
3
Messages
58
Reaction score
59
Location
Bakersfield CA
Vehicle(s)
2021 JLUR Diesel
@TX_Ovrlnd, @Morrepe, @word302 They are not touching my brakes except to bleed them as they have the equipment (scanner) that I do not and it is not worth my time in this heat to do it myself on the bench.
 
OP
OP
Skyvet

Skyvet

Well-Known Member
First Name
Jack
Joined
Jul 6, 2021
Threads
3
Messages
58
Reaction score
59
Location
Bakersfield CA
Vehicle(s)
2021 JLUR Diesel
I am not sure about other 4WP locations but the one in Bakersfield seems to be competent. This is my first problem that I have ever had with them. And ultimately I feel that the bearing itself may have been defective which would be on Yukon not 4WP. Granted they didn't put in the diff fluid they charged me for and told me they did but, as many have pointed out, it is debatable if they should have put the fluid in the diff in the first place. Given that I literally drove 500 feet before it ate itself I would be more likely to believe a defective bearing. Or maybe the preload was way way too high (hard to imagine that it could have been that far out). In any case I think most shops either would have denied my claim or told me they would charge me labor but not the part. The fact that Bakersfield 4WP immediately and without any argument at all resolved the issue in my favor says a lot for this location.
 

word302

Well-Known Member
Joined
Sep 13, 2017
Threads
10
Messages
4,484
Reaction score
4,867
Location
Oregon
Vehicle(s)
JLU
I am not sure about other 4WP locations but the one in Bakersfield seems to be competent. This is my first problem that I have ever had with them. And ultimately I feel that the bearing itself may have been defective which would be on Yukon not 4WP. Granted they didn't put in the diff fluid they charged me for and told me they did but, as many have pointed out, it is debatable if they should have put the fluid in the diff in the first place. Given that I literally drove 500 feet before it ate itself I would be more likely to believe a defective bearing. Or maybe the preload was way way too high (hard to imagine that it could have been that far out). In any case I think most shops either would have denied my claim or told me they would charge me labor but not the part. The fact that Bakersfield 4WP immediately and without any argument at all resolved the issue in my favor says a lot for this location.
It doesn’t take much to over-torque the pinion on these. Preload is very low and a very narrow tolerance. I would put money on their setup being the issue. I wouldn’t let 4WP put a sticker on my rig. Bleeding brakes is the most important part of the job, definitely not something I would trust in the hands of 4WP. I would consider your differentials a ticking time bomb.

 
Last edited:

Capital CDJR
 
Top