turn wheels-engine turns?

IndiRon · Jun 13, 2016

350, head off, attempting to get #1 to TDC, jacked up rear so wheels turn free. Put in gear, turned wheels, pistons moved. I checked piston position,
rotated wheels again, no piston movement. Repeated, no movement.
What's going on here? What am I doing or not doing? I mean common sense tells me turning the wheels should turn the engine over?

rustyfarmall · Jun 13, 2016

(quoted from post at 09:37:30 06/13/16) 350, head off, attempting to get #1 to TDC, jacked up rear so wheels turn free. Put in gear, turned wheels, pistons moved. I checked piston position,
rotated wheels again, no piston movement. Repeated, no movement.
What's going on here? What am I doing or not doing? I mean common sense tells me turning the wheels should turn the engine over?

With both rear wheels off the ground, the differential will allow the opposite wheel to turn the opposite direction, instead of transferring the motion to the engine. Maybe a brake was binding up on one wheel for your first attempt?

Janicholson · Jun 13, 2016

One other comment (differential action is sure one, Lock the brake on one side and turn the other)
The other is the TA might be pulled back. If it is, the rear tires will only turn the engine backwards, not forwards. Use 5th gear for best advantage, TA forward, one brake locked. Jim

old · Jun 13, 2016

Well as Rusty says and if you have both rear wheel off the ground common sense say the place with the least resistance is what will turn so the engine moved till it hit some resistance which was more then what was seen at the rear wheels to the wheel turned instead of the engine. Set one wheel on the ground to what would be better is use the hand crank to turn the engine

IndiRon · Jun 13, 2016

Got it, block one wheel...common (mechanical) sense wins out!
Thanks all for the info

turn wheels-engine turns?

IndiRon

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rustyfarmall

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Janicholson

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old

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IndiRon

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