Which way to spin 4020 pump to advance timing?

1 Dollar · Mar 13, 2021

When standing next to the engine, which way do you spin the injection pump on a 4020 to advance the timing?

1 Dollar · Mar 13, 2021

wore out · Mar 13, 2021

IIRC, looking down at the pump it turns CCW, so, looking down at it you would turn the pump body the opposite way, CW to advance injection timing.

To verify what I said, the lines attach to the pump in firing order, 1-5-3-6-2-4, turn it OPPOSITE that direction to advance.

Dieseltech · Mar 13, 2021

Looks to be close to end of bolt slots, it may not move clockwise much..

1 Dollar · Mar 14, 2021

(quoted from post at 17:43:54 03/13/21) IIRC, looking down at the pump it turns CCW, so, looking down at it you would turn the pump body the opposite way, CW to advance injection timing.

To verify what I said, the lines attach to the pump in firing order, 1-5-3-6-2-4, turn it OPPOSITE that direction to advance.

Thank you all, that confirmed what I was thinking! I have it turned so far that the throttle linkage is hitting the block on the backside so Im basically out of room.

The lines in the window show its plenty advanced as there is about 1/8 between the lines at TDC. Tractor still smokes white eye burning smoke and skips and flutters. I talked to Tim S in Ohio on the phone and we discussed the possibility of having so much wear in the cam gears that it just may not be able to be far enough advanced anymore. The tractor runs OK just not spectacular, but without getting into the cam it may just be what it is for awhile.

Thanks

Which way to spin 4020 pump to advance timing?

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wore out

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Dieseltech

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