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72K5 - CL450 Starter Motor Area Ginding - Help

939 Views 5 Replies 3 Participants Last post by  ancientdad
I have a 1972 CL450 that I am trying to get back onto the road.

The starter clutch was not working. I purchased the rebuild kit and replaced it tonight.

Now the starter clutch it working...but after it spins the engine a couple times.....there is a loud clacking noise and then it stops.

Could it be possible that this would be the starter motor?
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I have a short video that I made, and I can send it if someone can help diagnose it would be great. Its snowing up here so I won't be going to work.

You don't go to work when it snows in Maine?
You don't go to work when it snows in Maine?
Haha nope! Snowmobiling all day and working on bikes.
I think I may have found the problem.

The starting gear behind the magnetic rotor seems to have a bit of wiggle room front and back.

I can't seem to get the magnetic rotor wheel any closer to the crank?

Is there supposed to be back and fouth wiggle room? If not, how to do I get this magnetic rotor closer to the crack case to snug up the gear?

Auto part Rotor Differential Gear Hub gear
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From just this picture and no other angles, the positioning looks pretty normal. You're not going to get the alternator rotor on the shaft any further than is allowed by the taper. there is a bit of in and out movement of the sprocket on the starter clutch. When you replaced the caps and springs, did you inspect the clutch housing itself to see if it had any cracks? A crack in the housing would allow it to expand its diameter enough that it would still allow slippage even with the other new parts, and it would have to be replaced. I suppose the planetary gears in the nose of the starter motor itself could be bad but I don't think that happens very often, and if they were bad it probably wouldn't turn the engine at all
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