B5100 leaking oil fast axel pin

Twright22

New member

Equipment
B5100
May 22, 2025
5
1
3
Oregon
Just want to make sure the diagnosis is close. Oil is squirting out middle of the front axel at the bottom of the pin that holds the axel to the chassis. Is this a broken seal and what would the typical cost be for a fix. Live in newberg Oregon and mechanics are scarce.

thanks!
IMG_7252.jpeg
 

Mountainman

Active member
Lifetime Member

Equipment
L2501, B7100, B2710 B21, B1750, B2400, B7200
Jul 10, 2022
380
145
43
Attalla Alabama
mossycreekoutdoors.com
In each end of the front axle case there are 2 orings (3 and 20 on diagram) and a bushing in between them (2 on diagram). You may or may not need to replace the bushings depending on how much wear there is on them and the pin. Bad part is you have to drop the frame to get the pin out. If your mechanically inclined you can do it.
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Twright22

New member

Equipment
B5100
May 22, 2025
5
1
3
Oregon
In each end of the front axle case there are 2 orings (3 and 20 on diagram) and a bushing in between them (2 on diagram). You may or may not need to replace the bushings depending on how much wear there is on them and the pin. Bad part is you have to drop the frame to get the pin out. If your mechanically inclined you can do it.
In each end of the front axle case there are 2 orings (3 and 20 on diagram) and a bushing in between them (2 on diagram). You may or may not need to replace the bushings depending on how much wear there is on them and the pin. Bad part is you have to drop the frame to get the pin out. If your mechanically inclined you can do it. View attachment 154959
I am really good at taking things a part but not so great putting them back :) Thank you for the help! I am working on getting a mech out here, hopefully the repair wont cost more than the tractor, I love it, it is a great machine. Thank you again!
 

North Idaho Wolfman

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Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
32,929
8,382
113
Sandpoint, ID
In order to get the axle pivot pin out on the model, it requires removing the front frame from the engine.
 

Twright22

New member

Equipment
B5100
May 22, 2025
5
1
3
Oregon
In order to get the axle pivot pin out on the model, it requires removing the front frame from the engine.
Copy that thank you!
In each end of the front axle case there are 2 orings (3 and 20 on diagram) and a bushing in between them (2 on diagram). You may or may not need to replace the bushings depending on how much wear there is on them and the pin. Bad part is you have to drop the frame to get the pin out. If your mechanically inclined you can do it. View attachment 154959
In each end of the front axle case there are 2 orings (3 and 20 on diagram) and a bushing in between them (2 on diagram). You may or may not need to replace the bushings depending on how much wear there is on them and the pin. Bad part is you have to drop the frame to get the pin out. If your mechanically inclined you can do it. View attachment 154959
So i took everything a part this morning. The bushings look good, O rings look good, the center pin looks alright too. Thing is, I only saw one O ring on each side, number 3 O ring wasn't on neither side. There weren't any grooves either for an O ring to slide in, if I pushed the pin through they would just fall into the axel. I cleaned it all out, thought maybe tightening everything up would help, I put it all back together but I am getting a small leak now vs gush. Could it be the Center Pin itself? I spoke with a dealer, its discontinued, they said even if they work on it, I would be screwed if they cant get the center pin.

Thoughts on the two missing O rings? Thanks!