41 A knock

L.B, · Sep 22, 2013

41 A starts runs good in all gears no knock,but park it and at real low idle a knock can be heard at flywheel crankcase area. Cant say where it is exactly. Raise engine speed it leaves. The clutch drum moves in and out 1/8" give or take a 8th with the knock. The knock is not a knock as much as a clack and not every cycle of the flywheel. Good oil pressure too.

Husker44A · Sep 23, 2013

You need to set crankshaft endplay at .05-.010. NOT 1/8" which is .125" . Your clunk could be the clutch driver and or the gears on the fan shaft and gears inside governor slapping together from being worn out. My 44 A does that too at a real low idle. Bump throttle up so it doesn't do that.

L.B, · Sep 23, 2013

I know there is a bit of gov lag to the rpms. Are you saying the in and out movement of the clutch drum is proportional to crankshaft endplay?

BushogPapa · Sep 23, 2013

Well, the Clutch IS mounted ON the Crankshaft...

With the clutch engaged, there should be NO clutch movement, leaving only Crankshaft End-Play..

Ron..

L.B, · Sep 24, 2013

This movement is at idle and clutch is not engaged.

L.B, · Sep 25, 2013

Thanks

BushogPapa · Sep 25, 2013

Dis-engaged, the clutch must be free enough to allow the facings to freely slip..!!

When engaged, it clamps the facings and is one with the crankshaft..

Ron.

41 A knock

L.B,

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Husker44A

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L.B,

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BushogPapa

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L.B,

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