john deere G crank cam timing?

Dorothy J. Dunn · May 7, 2009

I have a 1951 John Deere G tractor which I am restoring and am having a hard time timing the crankshaft, camshaft and magneto. Can anyone give me some info on how to line them up?

John T · May 7, 2009

To begin with the flywheel must be on the correct cranks spline so when its Left Hand Impulse (LHI) timing mark is at 3 o clock the left piston is at dead TDC.....

Cam must be timed to crank so when flywheels Left Hand Exhaust (LHE) is at 3 o clock the left hand exhaust valves just starts to open

Govenor must be timed to cam so when flywheels LHI is at 3 o clock the open female slot in governor shafts end (where mag or dist mates) is flat horizontal fore n aft.

The clutch heavy drive disk must be on correct crank spline also (as well as flywheel) or theres big time vibration n imbalance

John T

Anonymous-0 · May 7, 2009

Aren't there indexing marks on the gears from the crank to the cam?

Dorothy J. Dunn · May 9, 2009

Thanks a lot for your info. It worked!!!! Finally got my John Deere running after much frustration.

john deere G crank cam timing?

Dorothy J. Dunn

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John T

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Anonymous-0

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Dorothy J. Dunn

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