PTO problems late model 4020 syncro

Robin Bos · Jun 27, 2015

hello all,

After the many problems i've had with my 4020, now the pto clutch slips. It has a synchro transmission with the hydraulic actuated clutch. As i understand the oil pressure is applied to the two pistons in the bell housing to engage the clutch?
is there a checkpoint to check the hydraulic pressure on this before splitting the tractor? is it possible to adjust the pressure?
Is the oil pressure comming from the transmission oil pump? (wich i already replaced) or from the main hydraulic pump in the front?

Steering, brakes and diff lock works fine.

I've tested the tractor on the dyno after the complete engine overhaul, and it started slipping at about 60hp.

I cannot find it in the manual, and previous topics do not provide an answer to these questions.

Kind regards,
Robin Bos

Tx Jim · Jun 27, 2015

Late model 4020 syncro-range trans > sn 201,000 operates from main hyd pump pressure. One might could test pressure at plug(parts key 17).

Mitch D · Jun 27, 2015

And if you don't get 2200psi that valve might need to be replaced. We had to do that for neighbors 4020 not to long ago.

tim s · Jun 27, 2015

My vote is split it and look at the clutch, it may have oil on it, could be worn out,,and it could be out of adjustment...

D- · Jun 27, 2015

Remove lower clutch housing cover to see if oil is leaking around pistons.

PTO problems late model 4020 syncro

Robin Bos

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Tx Jim

Well-known Member

Mitch D

Member

tim s

Well-known Member

D-

Well-known Member

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