2810 PTO Clutch Assy.

JWA

Member
Have been looking for a PTO clutch assy. E0NNN751AB. This clutch calls for 7 discs per the New Holland parts site, fits 2810 thru 4610 and 335. When I google the part number there are a lot of listings for E0NNN751BA which is a 5 disc clutch for the 5000 and higher series tractors. Anybody know where I can look?
 
I knew that CNH no longer had them but I figured there would be
an aftermarket available. Oh well. I wanted to have a complete
clutch assy. on hand when I tear it down to save time. Guess I'm
going to have the opportunity to rebuild one if I can come up
with all the parts. I have performed all the diagnostic steps for
a slipping PTO in the IT manual and everything points to the
clutch pack.
 

So you've checked the regulating valve pressure and had the lift top off to check the control valve pressure.
The pto clutches can fail but it rarely happens on these tractors, more times it's low pressure that allows the clutches to slip.
 
Yes, had the lift cover off and on a couple times,and checked
pressures at regulating valve and control valve. Don't have my
notes in front of me but IIRC pressure at regulating valve was
running around 160 PSI and about the same at the control valve.
I thought about adding a shim to the regulating valve to up the
pressure to see if it helps. The manual states that if the PTO
slips under load to overhaul the clutch assy. Mine slips to the
point of not turning at all when bush hogging heavy fescue.
What do you think? Any chance shimming the regulating valve would
help? May give it a shot, sure easier than splitting the tractor.
 

Pressure should be 220-230 so it's down a little, I'd try to get the pressure set before tearing it apart.
Could have a valve not sealing, line fitting leaking or clutch piston seal leaking.
The regulating valve controls the pressure coming from the pump, if you can't shim the valve to get the proper pressure ether the pto section of the hydraulic pump is bad or the line suppling oil from the pump to the regulating valve is leaking.
If you've slipped the clutches very much them may need replacing but make sure to have the correct pressure before using it again or you could burn up a new set of clutches.
 

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