Kubota B7800 Fabricating Side Rail Bell Housing Supports.

Hodgy

Member

Equipment
B7800, front blade, box blade, subsoiler & 3 PTH snowblower
Apr 19, 2019
126
9
18
Canada
After two broken bell housings and two blown clutches I decided to fabricate side rail supports for my 06' Kubota B7800. I used 6" x ½" steel plate and connected the engine rails to the rear rails to support both the aluminum bell housing and the cab support structure. It was on the last clutch repair that the mechanic at TractorLand in High River Alberta indicated that the tractor lacked support for the bell housing. He noted that loader tractors had a bridging support that joined the engine frame and the rear of the tractor thus giving strength, The front support for the cab also was attached to the aluminum bell housing putting more weight and stress on the joint between engine block and bell housing. My tractor had no such support.

Here is a fairly long youtube video of the process. Hopefully I have fixed the defect.


 

North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
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Sandpoint, ID
What model front hitch is on it?
As the original hitch mount also included a subframe to stop what's happening to you.
B7800 subframe.JPG
 

Hodgy

Member

Equipment
B7800, front blade, box blade, subsoiler & 3 PTH snowblower
Apr 19, 2019
126
9
18
Canada
I don't see a tag on the front hitch but your drawing looks like the same one. Your attachment has the number 56374 on it. Is that the Kubota part number ?
 

Hodgy

Member

Equipment
B7800, front blade, box blade, subsoiler & 3 PTH snowblower
Apr 19, 2019
126
9
18
Canada
I did some digging and the subframe number for my B7800 is B1791A. Looking like the part number is 77700-05037 which replaced 70060-0236. No where in the diagram does it show the side support rails.

Do you know the part number for the rails ?

Hodgy


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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
28,286
4,853
113
Sandpoint, ID
The subframe is part # 70001-00612

The hitch is whole goods# B2761