550 trans rebuild

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digitup2
350 crawler
350 crawler
Posts: 858
Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Sun Apr 15, 2012 12:53 am

This really isn't strictly a Deere problem but dose occur I know the Allis Chalmers crawlers had internal leaks but the oil frothing wasn't the issue there the loss of oil pressure was the main thing .Digitup,

adamshuss
420 crawler
420 crawler
Posts: 27
Joined: Tue Sep 06, 2011 6:53 pm
Location: United States

Post by adamshuss » Thu Aug 16, 2012 6:37 pm

ended up being both control and selector valve.

adamshuss
420 crawler
420 crawler
Posts: 27
Joined: Tue Sep 06, 2011 6:53 pm
Location: United States

Post by adamshuss » Thu Sep 25, 2014 8:15 pm

It got a little better with the valve changes but the problem is still there. I've heard of welding the collectors then machining back to spec. Ever heard of this?

west25346
40C crawler
40C crawler
Posts: 14
Joined: Sun Mar 09, 2014 3:19 pm
Location: nh

jd550 transmission

Post by west25346 » Sat Sep 27, 2014 5:32 pm

Talked to two JD service guys about the collectors being worn on inside diameter and neither could remember repairing the id of the collectors, just installed new sealing rings. Did you replace the rings on the pistons?

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