Cat D4 Transmission problems

[flametamer]

Is there anyone here familiar with a '70's era( I don't have the exact year) Cat D4 dozer transmission? A friend of mine has one that is acting up:

1. It takes a while to warm up before it will move.
2. When it is in neutral, it is still in forward or reverse depending on if the
shifter is leaning toward the forward or reverse side. It never gets to
neutral.

The fluid level is good, and it looks clean. It has been sitting for a while.
I think it is a hydraulic or internal transmission problem but that is as far as I can go. Any help will be appreciated.


Thanks
Dt

 

[pittedmess]

D 4

Power Shift? Engine Running .. Can all the detents on the shifter be felt in all ranges..If not check linkage
Next step..pull transmission oil filter and magnetic strainer
Iron or steel pieces or parts..transmission problem
Bronze pieces...clutch failure
Brite steel pieces..pump failure
Aluminium pieces..torque converter
Rubber pieces..seals, o rings or hose failure