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1972 harley-davidson shovelhead timing - Motorcycles

Posted by Anonymous on

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Posted on Jan 02, 2017

wd4ity
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SOURCE: 1972 shovelhead harley-davidson engine rebuilt

Thirty over is nothing. I just finished a rebuilt on a 1970 model and we went 0.050" over on it. It was already at 30 over and the pistons scored.

Anyway, don't use one of these cheap Chinese made bendix's. Get an ACCEL. They may be made in China but they're better. You can't get good Shovelhead parts anymore.

Now, before you put the outer primary back on, use your hand and operate the fork that shifts the bendix into engagement with the ring gear. Does it engage like it's supposed to. You'll probably have to turn it just a bit. Now, do it again with the outer primary on. Does it still engage smoothly?

Now, here's the cause of most starter grinding problems on a shovel. The starter, ring gear, and outer primary are all out of alignment. The starter housing, the one with the big gear in it is supposed to have alignment pins in it as well as the outer primary. These pins are to ensure that the starter drive and the ring gear are properly aligned with each other. With the starter and outer primary on, you should be able to pull on the plunger of the solenoid and the starter drive engage fully and smoothly. Also don't forget the large brass washer. This keeps the drive from going too far.

If you're worried about low voltage, take the battery to an automotive parts store and ask them to load test the battery. If it drops below 10 volts, buy a new battery.

Posted on Aug 18, 2010

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Thirty over is nothing. I just finished a rebuilt on a 1970 model and we went 0.050" over on it. It was already at 30 over and the pistons scored.

Anyway, don't use one of these cheap Chinese made bendix's. Get an ACCEL. They may be made in China but they're better. You can't get good Shovelhead parts anymore.

Now, before you put the outer primary back on, use your hand and operate the fork that shifts the bendix into engagement with the ring gear. Does it engage like it's supposed to. You'll probably have to turn it just a bit. Now, do it again with the outer primary on. Does it still engage smoothly?

Now, here's the cause of most starter grinding problems on a shovel. The starter, ring gear, and outer primary are all out of alignment. The starter housing, the one with the big gear in it is supposed to have alignment pins in it as well as the outer primary. These pins are to ensure that the starter drive and the ring gear are properly aligned with each other. With the starter and outer primary on, you should be able to pull on the plunger of the solenoid and the starter drive engage fully and smoothly. Also don't forget the large brass washer. This keeps the drive from going too far.

If you're worried about low voltage, take the battery to an automotive parts store and ask them to load test the battery. If it drops below 10 volts, buy a new battery.

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