Re: Starter Ziinnggg!!

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Posted by Tony C on June 17, 2018 at 10:41:30 [URL] [DELETE] :

In Reply to: Re: Starter Ziinnggg!! posted by 49er swGA on June 17, 2018 at 09:42:53:

Hey Dennis,

Clean up and dress with emery the housing real well as well as the starter, Same for cleaning the goo disguised as paint on the new ones. DOn't grind either part. They are designed for a tight fit. THe tight fit helps counteract the torque (not real great, but there) effect. If you do clearance it a little no big deal though, the clamping force of the bolts is more than enough. It's not like you are trying to fire a D11 CAT motor in twenty below.

Here are a couple of things to think about relative to starter drives:

When an engine stops, especially the Ford fours with the oddball firing order it generally stops with two pistons up and two down, consequently the wear on the starter ring is concentrated in four areas. Over time (six to seven decades) with a little wear on the Bendix gear and the ring gear wear one or two teeth on the flywheel get worn excessively. Zinggggg!

A battery that is a little low coupled with an engine a little out of tune can cause it. THe engine hesitates or backfires imperceptibly as it begins to fire fooling the drive and the gear kicks out. Same for a cold blooded engine that hits on every other stroke of the firing order until it finally starts on all four, kinda like when a flooded engine tries to light. Zinggggg!

IIRC there is no adjustment to take up the wear in the gears so the alternative is to replace the Bendix. Or the ring gear. Cheap and not hard to do the former, the latter ehhhhh not so much. If you absolutely positively have to lube the Bendix in spite of it not being necessary, molybdenum disulphide is another good choice. Hard for dirt to get into the bell unless a dust shield is off.

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