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Old 09-27-2014, 12:42 PM   #5
BRENT in 10-uh-C
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Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,535
Default Re: Crank angle adjustment

Quote:
Originally Posted by Bob Bidonde View Post
Misalignment of the hand crank bushing and the crankshaft is a common problem with Model A's. The fix is simple. Loosen the rear motor mounts, and the nut on the front motor mount. Using a jack under the oil pan, lift the engine until it is at a 3 degree angle sloping downward to the rear, then tighten the rear mounts and adjust the front mount spring.

To assure you have a 3-degree angle, put the car on level ground before making the adjustment. Replace the carburetor with a bubble level taped to the intake manifold flange. When the engine is at a 3-degree angle, the intake manifold flange will be level.

You can also use an inclinometer to get the angle right.

Once the 3-degree angle is attained, the hand crank should fit into the crankshaft ratchet. If not, something else is wrong. Possibilities are: Bent frame; Cracked rear motor mounts; Float-O-Motor engine mounts.

The 3-degree angle has a significant affect on the carburetor's float setting, so you may have to adjust the float.
Hey Bob, if you look at his picture, it does not appear he is having issues with the horizontal alignment, but more that the crankshaft pulley is not in parallel alignment. Are you thinking your method will correct this too when the rear mount bolts are loosened?
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