7600 pto stops when warm

youngin

Member
So the 7600, when brush hogging starts out
fine then the pto looses power they say.
Was told it could be worn pump or oring I
took some pressure readings.I got


Normal 120-140 gauge flutters
Power, click it in drops then settles
about 145

With PTO on I get
Normal 60 psi
Power drops then 180-200.

I dont know much about these hydraulics.
Where should I look now?
Thanks,
 
Those readings were taken off the right side in front of the brake pedals. I think dual power. When I went to take the reading at pto it looks like the relief valve has a white plastic seal thing in with the oring and its pushed out on one side.
 

cvphoto1072.jpg
 
Pressure test it again but this time shift the dual power. I?d be willing to bet you?ll find lower pressure in direct drive than in under drive. If that?s the case you?ll need to over haul the dual power and the pto. They operate on the same low pressure system.
 
That's what I ment by normal and power. In normal it is very low with the pto on, 60 psi. I currently do not have a fitting to test at the pump, only at the dual power T.
 
Then the cause of your problem is that low pressure. Most likely the sealing rings for the direct drive clutch are leaking.
Fixing the dual power and the pto on that tractor requires a double split.
 
So double split looks like I would take a transmission jack roll engine and front axel away, block it then roll transmission out? Anyone craft a homemade bracket for these where would it bolt to?
Thanks
 

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