Jd 620 rock shaft piston and sleeve removal

Dspree · Dec 30, 2021

We are taking apart a John Deere 620 pto housing. Have everything out but the rock shaft piston and sleeve. How do we get it out?

Tx Jim · Dec 31, 2021

Welcome to YT
In order to access/R&R rockshaft piston & barrel one must remove rockshaft housing from rear of trans/final drive housing.

Richard G. · Dec 31, 2021

Post this down on the JD forums.
Lot of knowledge there.

Dspree · Dec 31, 2021

(quoted from post at 03:37:46 12/31/21)
Welcome to YT
In order to access/R&R rockshaft piston & barrel one must remove rockshaft housing from rear of trans/final drive housing.

We have the housing removed from the back of the tractor. Just not sure how to get the piston and barrel out

Mike M · Dec 31, 2021

Jd makes a very good service manual on those hyd units.I highly recommend
getting one. I have changed a couple of the piston seals on those right on the
tractor. To get the piston out you have to remove one rockshaft arm and then
move the rockshaft over enough to the one side so the piston can come all the
way up out.I don't think it had to come all the way out. I think you also remove
the rate of drop adjustment you can get it from the outside. This lets air in as
you pull the piston up and out.

Dspree · Dec 31, 2021

We are completely removing all parts from the cast housing and putting in a new housing because ours is broken

JIM MN · Dec 31, 2021

Everything comes out the top. Take off top cover-A5609R.. Pull out rocker-shaft-A5591R.. Pull up
piston-A5397R.. Then cylinder-A5594R can be pulled out....

Tx Jim · Dec 31, 2021

Jim
Thanks for correct explanation. I was thinking about older model 2 cylinder rockshaft piston/cylinder.
Jim

Jd 620 rock shaft piston and sleeve removal

Dspree

New User

Tx Jim

Well-known Member

Richard G.

Well-known Member

Dspree

New User

Mike M

Well-known Member

Dspree

New User

JIM MN

Member

Tx Jim

Well-known Member

Similar threads