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Restoration & Repair Tips Board

1950 Case VAC

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Tractor Restore

05-13-2006 08:27:03




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Dear Anyone Who Can Help,

I am currently restoring a 1950 Case VAC and am having difficulty putting it back together. Can someone help explain how I get the timing correct on it again. I had taken the distributor out to paint it and had failed to mark where the cap should be and which wires go where. This was a big mistake on my part because now I have no clue where it should be placed. If someone could help explain what I should do, it would be very appreciated. Thanks for your time.

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Joe (Wa)

05-15-2006 21:09:56




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 Re: 1950 Case VAC in reply to Tractor Restorer, 05-13-2006 08:27:03  
Rotate the crankshaft (CW as viewed from the front) until #1 cyl is TDC on the compression stroke (make sure it is not TC on the exhaust stroke). The factory distributor attitude is with the rotor pointing near 3 o'clock to fire #1.

Looking down on the distributor:
Stab the distributor with the rotor in place. The dist drive gears are helical, as the gears mesh the rotor will turn CCW so start the stab with the rotor pointing somewhere after 4 o'clock and when in full mesh the rotor will end up pointing near 3 o'clock.

When you get the rotor in that position tighten the hold down bolt. When the engine is running the rotor will be rotating CW. Loosen the clamp screw and turn the dist head until the breaker actuator is on the top of the cam lobe, set the points @ .020" with a feeler gage. Turn the dist head CW until the points are closed now turn the head back CCW until the points just start to open and tighten the clamp screw.

The engine firing order is 1342 and the rotation of the rotor is CW so when you put the cap on, put the #1 cyl wire in the tower that is near 3 o'clock, #3 wire near 6, #4 wire near 9, and #2 near 12. That is good enough to start the engine and tweak the timing in to TDC with a light.

Joe

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