Jd 70

MaverickLWhiting · Jun 26, 2022

We just bought a John deer 70 its runs but when the clutch is disengaged it makes a terrible noise as soon as you engage the clutch it smooths out a lot and u can barely hear it we tore the clutch apart and cannot find anything that is broke or not right

onefarmer · Jun 26, 2022

There is a bearing in there goes between the clutch and the crank. Maybe it needs grease or gone bad. I remember my dad taking the clutch all apart twice a year to grease it. 620 and 720

Swittig · Jun 26, 2022

Check to make sure your flywheel is tight
on the other side. Just had a 630 with a
simular issue and that was the problem.

coonie minnie · Jun 26, 2022

If it is a knocking noise, take the flywheel cover over off and verify the flywheel isn't loose on the splines. A loose flywheel seems to make noise on the clutch side, for whatever reason.

As mentioned by other posters, make sure the roller bearing in the pulley is in good shape as well.

wore out · Jun 26, 2022

Did you remove the clutch driving disc?
That would tell us two things... the
driving disc fits on tapered splines on
the crankshaft & if they are in good
condition it takes a serious puller to
remove it. Once it's removed one more
clutch plate is revealed.

If the splines are worn/loose that can be
a source of noise, and if the ''hidden'
fiber clutch disc is worn/broken/damaged
it can flop around and grab & make noise.
Also, excessive crankshaft endplay can
cause problems and noise.

It is set by moving the flywheel inwards
to limit endplay to ''spec'' then
tightening the flywheel clamping bolts.
IIRC, endplay ''spec'' is minimal, five
to ten thousandths, but verify this.

MaverickLWhiting · Jun 27, 2022

thank you we will check all that

Jd 70

MaverickLWhiting

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onefarmer

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Swittig

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coonie minnie

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wore out

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MaverickLWhiting

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