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timberjack skidder

bud68

New member
Purchased a used 450 c timberjack skidder, and when you start it up when it is colder outside, and put it in forward or reverse it will not move. You have to shut it off and start it back up for it to be able to start moving. The previous owner said that it has done it for all the time he owned it. He said it may be a sticky valve.

Just wondering if anyone has any experience with this?
 

mla2ofus

Well-known member
GOLD Site Supporter
What happens if you let it sit and warm up for 15-20 min? Does any other hydraulics work when it won't move? Steering, grapple, winch(assuming the winch is hyd. driven)? Do you hear a whining sound that goes away when it will move?
Mike
 

bud68

New member
When yo u let it warm up it will move better but even then , sometimes it wont move and yo u have to shut it off then start again .. then it moves.

The blade , grapple steering winch all work when it will not move.

And never hear any whining noise at all.
 

mla2ofus

Well-known member
GOLD Site Supporter
I'd say find the pressure test port on the tranny and check pressure w/ a gauge when it won't move and when it will. It would be a good place to start. I know nothing about Timberjacks. Pressure test is a good place to start on auto trans diagnoses.
Mike
 
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