620 clutch/pulley bearing

Dan Nickels · Jul 22, 2018

Baling with 620 and kicker baler, and getting
noise (cross between howl and dog barking)
seeming to come from clutch/pulley area. I am
thinking bearing in pulley. Owner manual says
remove clutch and pulley to grease. Parts manual
shows pulley on first, then bearing into it, then
clutch plates & disks etc. Question is, do I have
to remove pulley to get to bearing, or can
someone give guidance... Thank you... Dan

machineryman1945 · Jul 22, 2018

there would be no rotation of bearing with clutch engaged. Probably the inner planetary drive bearing or gear or pto bearings in case...

Dan Nickels · Jul 22, 2018

Thanks for replying, but you mention pto...noise
is coming from main hand clutch/pulley
assembly...?.?.Dan

matthies · Jul 22, 2018

The pto gets its power from the crankshaft behind the belt pulley. All two cylinder row crops do.

susandiane · Jul 22, 2018

That's some strange sound you got there! I was checking out a number series tractor and engaging the PTO with the lever on right of seat resulted in a startling howl from in front and below. Throwing the PTO out of gear with the lever on the deck changed it. It was in the bevel gears and the in-out slider way at the bottom of the transmission. I was told that it was a real stinker to repair. Hope it isn't that. . . Does the howl vs bark relate to load on PTO?

Dan Nickels · Jul 22, 2018

The noise is the same even when not using pto. If I just drive tractor down road with no implements noise is same ?.?.?. Dan

buickanddeere · Jul 22, 2018

pto isolation lever located just just behind the hand clutch pivot . Any difference in howl between the engaged and disengaged ?

Dan Nickels · Jul 22, 2018

No difference whether pto lever is engaged or
disengaged... I still question bearing in
pulley... Dan

machineryman1945 · Jul 22, 2018

The crown and heels wear off the clutch and transmission driven gear and then the gear just rake...making the noise....the teeth are no longer rolling while in contact....howling ringing noise occurs...

(quoted from post at 09:50:05 07/22/18) Baling with 620 and kicker baler, and getting
noise (cross between howl and dog barking)
seeming to come from clutch/pulley area. I am
thinking bearing in pulley. Owner manual says
remove clutch and pulley to grease. Parts manual
shows pulley on first, then bearing into it, then
clutch plates & disks etc. Question is, do I have
to remove pulley to get to bearing, or can
someone give guidance... Thank you... Dan

Dan in Ohio · Jul 23, 2018

Dan,

Sounds like a loose fly wheel to me. Does the sound change when you engage or disengage the clutch? They usually are heard like it is coming through the clutch.

Dan Nickels · Jul 23, 2018

I think that sounds like it could be the problem,
what is the fix ?? (I am an old farmer, not a
mechanic.. is this easily correctable or major
surgery???) Thanks.. Dan

Dan Nickels · Jul 23, 2018

I am not sure... I will have to check it out and let you know....heavy rain with a flash flood watch now, so it will have to wait a bit...Dan

machineryman1945 · Jul 24, 2018

Yes you would be looking at a major mechanic project and would entail considerable expense.

e="dan nickels"](quoted from post at 13:20:22 07/23/18) I am not sure... I will have to check it out and let you know....heavy rain with a flash flood watch now, so it will have to wait a bit...Dan[/quote]

Dan Nickels · Jul 24, 2018

....well crap !!! I have owned this tractor for
fifty years, and maybe we both are finally
wearing out...I guess I will put in ear plugs and
pretend I don't hear the noise ! So far, it still
works fine except the noise.... Dan

machineryman1945 · Jul 24, 2018

I've seen those tractors so loose in the transmission that I couldn't see why they even worked...many of them would self destruct as gear would over ride. The maintenance on these included adjusting the shims and keeping up to date but many of them probably never had the transmission oil changed.....

(quoted from post at 07:05:41 07/24/18) ....well crap !!! I have owned this tractor for
fifty years, and maybe we both are finally
wearing out...I guess I will put in ear plugs and
pretend I don't hear the noise ! So far, it still
works fine except the noise.... Dan

Dan Nickels · Jul 24, 2018

I try to do my best for this fine old John Deere.
Last year I changed transmission oil, and over
the years I have rebuilt both pto and pulley
clutch twice, but I am at a loss at to what the
shims are that may need adjusting?.?.Thanks.. Dan

620 clutch/pulley bearing

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