CATERILLAR D4-7U BULLDOZER IN NZ
REPLACING THE BACKEND
Clean backend bay
The D47U make sure you have a nice clean bay to work with.
We cut our own gaskets
STEERING CLUTCH INFO
| Clearance between shaft & Pressure plate bush |
.002" -- .004" |
| Max allowed clearance |
.015" |
| Clutch springs outer in pounds pressure |
161-178 |
| Clutch springs inner in pounds pressure |
123-136 |
| Clutch springs inner in pounds pressure compressed |
2 13/16" |
| Steering clutch min width |
3 1/8" |
| Steering clutch normal width |
3 7/16" |
| Steering clutch maximum width from face inner clutch & p.plate |
3 5/8" |
| Steering clutch inner drum-to-shaft pressure in tonnes |
20 |
| Steering clutch lever badjustment, free play |
3" |
Make sure you blow air into the holes to get rid of water and oil etc
Backend already to fit into the bay. We put the drums back on before placing
Lowering the backend into the bay. The above is going in the wrongway? Note bevel gear cog
should be in the other way as below.
The correct way installing the bevel gear. We used our Komatsu excavator to lower the bevel gear into the rear end
Note the dots must lineup
New pads on the brake shoes are fitted after we put in the backend.
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