D6D 4X Steering Problem

I think you should check the release pressures down at the elbows going into the case. I have a feeling the release pressure might be staying there and not dropping off. If you find that, check your linkages are not hanging up. If linkages are okay the valve spool may be sticking inside. The spools are forced to the clutch release position by the levers and returned to the engaged position by the springs. Any debris can jam them up.
Later Bob

Do you guys have any photos or manual pages that show the spool valve location and breakdown?

When my Dad operates the dozer it never has this problem but he really takes it easy and only runs it half throttle. The usual operator is the one who has the problem. He runs it 3/4 to full throttle. He is also 6' 2" and weighs 320lb and is a lot more heavy handed with the steering levers.

The steering clutch valves are under the seat...lift if up and you'll see the linkage from the steering levers. There is also a steering clutch check valve that's next clutch valve. (at least on a 6c) Not sure if it could cause your problem.

The scans below are from a D6c so they'll be a little different but will give you an idea of how it operates. The D6D has power brakes connected to the steering clutch that the D6c doesn't have. I't possible that it could be a linkage adjustment problem....the scan shows how to adjust it but again that will be somewhat different on your "D".

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I really need to find a service manual for my D6D. Any idea where I could find one and how much it should cost?

I really need to find a service manual for my D6D. Any idea where I could find one and how much it should cost?