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Re: Farmall 400 won't run, any more ideas

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El Toro

09-15-2012 04:36:43
108.3.143.30



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The woodruff key on the distributor gear may be sheared or your rotor is defective. Before installing the distrubutor you need to get No1 piston near the radiator to TDC on the compression stroke. Pull No1 sparkplug and hold your thumb over the plug hole while a helper slowly cranks the engine. Once you feel pressure drop a long plastic straw on top of the piston. Then you watch the straw rise as the helper slowly cranks the the engine. When the straw quits rising your No1 piston should be at TDC on the compression stroke. Rotate the rotor until it points to the No1 plug tower which is about 1 o'clock and install the distributor. Hal
PS: Firing order:

2-1
4-3 As the rotor rotates CW.

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msandstrom

09-15-2012 13:00:23
70.198.1.187



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 Re: Farmall 400 won't run, any more ideas in reply to El Toro, 09-15-2012 04:36:43  
Thanks for the info, where is this woodruff key in the dist. Took the dist. Off where it connects to hyd pump. A big cross bar that fits into pump. Looks ok. Nexk to dist of from where it can be adjusted. Two small meshed gears. One with a pin through it. Seems to be intact. Maybe a little play as you turn rotor one direction or the other. The weights and springs behind rotor plate are worn and do not spring back very well. Am going to put it all back together as you described and see what happens. Thanks Mark

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El Toro

09-15-2012 14:37:19
108.3.143.30



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 Re: Farmall 400 won't run, any more ideas in reply to msandstrom, 09-15-2012 13:00:23  
The woodruff key should be in the gear so the gear doesn't move on the distributor shaft. Some of these tractors have had a problem from the hydraulic pump damaging the timing gear. Once you have the distributor installed after bringing No1 piston to TDC on the compression stroke. See if the engine will start. If it won't start, bring No1 piston again to TDC on the compression stroke then remove the distributor cap and see where your rotor is pointing. It should be at the No1 plug wire tower on your cap. Both valves on that cylinder should be closed and they should have about .020" clearance. Hal

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msandstrom

09-15-2012 16:56:07
70.198.1.187



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 Re: Farmall 400 won't run, any more ideas in reply to El Toro, 09-15-2012 14:37:19  
Thanks for your help. It is running again!!! Mark Sandstrom



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El Toro

09-16-2012 04:20:29
108.3.143.30



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 Re: Farmall 400 won't run, any more ideas in reply to msandstrom, 09-15-2012 16:56:07  
Glad you have it running. Hal



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