JDcrawlers Messageboard

Pulling both steering clutches did not change pressure at all.
I am going to pull transmission cover off. Maybe I will get lucky and find something obvious.

Finally replaced filters & fluid.
No surprise that pressure did not increase at all.
Starting to remove engine to check pump, unless someone has a better idea.

SN# on tag is 450CA 312228T. Pretty sure 1978. It is a crawler loader. My manual is a technical manual for JD 450c crawler. Manual says there should be 180 psi at port on transmission. I am only getting 40 - 60 psi at any rpm. Tried adding multiple shims with no change in pressure at all. Hoping a b...

Transmission pump pressure is only 40 psi. Could anything but a faulty pump be the cause?
Machine runs and works fine except for low power when moving.