B2400 HST 4wd - Partially stripped bolt housing

NickAdams

Member

Equipment
B-2400 HSD
Jan 11, 2021
35
10
8
22642
Working on the tractor today and started randomly tightening bolts to reduce sources of hydraulic leaks. When I came to the bolt shown in the pictures below, the bolt did not tighten at all but could not be pulled out by hand. I did turn it counter-clockwise to remove the bolt. The bolt was not damaged but had some metal shavings on it indicating that it partially stripped the bolt housing. In addition, I found a spring and another part shown in the pictures below. The bolt housing appears to be an integral part of the tractor that would be extremely difficult/costly to replace. I have two questions:

1. Is there a product or method to allow the bolt to firmly seat in the bolt housing? I have used helicoil when working on cars but it does not seem practical in this application. Locktite might help but not as firm as I would like. Ideas would be appreciated.

2. I have been unable to locate the bolt and bolt housing with certainty in the parts diagrams. In the pictures the bolt housing has a green pen in it to help locate it. This is important to me because: i) I am not 100% certain that I recovered all the parts behind the bolt and ii) I am not certain how the parts go into the bolt housing before the bolt. I've gotten better at reading the part diagrams but have a way to go.

Thanks for your help
 

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torch

Well-known member

Equipment
B7100HSD, B2789, B2550, B4672, 48" cultivator, homemade FEL and Cab
Jun 10, 2016
2,641
883
113
Muskoka, Ont.
I would try a heli-coil there. The other alternative is Loctite's "Form a Thread" repair kit. It's an epoxy that you apply to the hole. Also supplied is a release agent for the bolt. You apply the epoxy and insert the bolt, allowing the epoxy to cure around the bolt threads.

The problem in this application is getting the hole clean and free of all oil so the epoxy can bond. I'd also be concerned about extra epoxy oozing in to whatever that spring is for.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
31,989
7,717
113
Sandpoint, ID
@PoTreeBoy got it right.


Let me post a little less blurry pic.
That's the charge relief port.
Get a epoxy thread repair kit or a heli coil kit.
Loctite PC3967
I would use a Qtip or a small hook tool and pull the seat out, #450
Then put a cotton ball (dry if doing epoxy or oil soaked if helicoil) in the port.
If helicoil:
Drill 1/8" deeper than the helicoil.
Vacuum port
Tap hole
Vacuum again
Install coil

If epoxy:
Follow kit instructions

Once rethreaded:
Pull out cotton ball reinsert seat cone, spring shim and bolt with new O-ring.


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