Delco-Remy Pull Start

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mmoyer777
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Delco-Remy Pull Start

Post by mmoyer777 »

Does anyone have info, documents, or an overhaul manual on this starter? The copper bushing on the push shaft fell out and I'm not sure how to make the proper repairs.
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6597
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Re: Delco-Remy Pull Start

Post by 6597 »

This? I don't know about repairs but Niagara Airparts has rebuilt units https://niagaraairparts.com/product/pull-clutch/ For that amount of $$ may want to consider retrofitting to a B&C or Skytec.

Or, someone on the forum may have a used unit for sale.
starteroilsealbearingpointa.JPG
starteroilsealbearingpointa.JPG (100.13 KiB) Viewed 1252 times
mmoyer777
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Re: Delco-Remy Pull Start

Post by mmoyer777 »

Thank you for the reply. The bushing and seal (where the finger is pointing) are what fell out. The clutch and all else are working fine, and it's not leaking much oil. But I'm sure it will wear quickly. I'm concerned about installing the new bushing and seal (purchased from Fresno Aircraft).
I found the old Del-co-Remy service bulletins today (DR-324 and DR-324s) but haven't found a procedure to install the bushings and seals. The copper bushings have a very odd pressed-pattern (you can see it in the picture) and thinking there may be a unique tool to expand the bushings into the aluminum housing.
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Re: Delco-Remy Pull Start

Post by 6597 »

Oh, you are talking about the Oilite bearing. Yeah, I don't know exactly how to press those in, they seem like they can be fragile. I've got some starter overhaul docs you may be interested but they are too large for me to post here, PM me with an email and I'll send everything I've got...
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Re: Delco-Remy Pull Start

Post by 4004 »

Try calling Fresno and ask for suggestions - those folks sure know their parts #s, etc and could possibly help. Also, suggest you mike the bearing inside diameter and the steel shaft OD. You may be able to heat the bearing, being careful not to overheat and drive out the oil in the bearing and, freeze the steel shaft and gently press the bearing on, using a lubricant. 2C. A heat gun may provide sufficient heat. The coefficient of linear expansion of copper is greater than steel. 2c
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Re: Delco-Remy Pull Start

Post by 6643 »

If you're talking about the bushing in the housing that the plunger for the starter drive slides in, I'm pretty sure it's just pressed in. Freeze the bushing and warm the housing and use a hand press. If it's not a tight fit, use some Locite 638 bushing retaining compound.

Here's the problem: In an effort to stop the oil drip, folks have installed a seal on the inside of the housing. This prevents the bushing from being lubricated. Originally there was a felt washer between the drive gear and the housing. When the starter was not being used it kept oil from getting to the bushing and leaking out. (Mostly). When you pulled the starter cable a little oil got on the plunger and when the starter was released, it was pulled back into the bushing.

Cutting the housing for the seal also shortens the bushing so the side forces on the starter gear wear the bushing faster.

Niagara Airparts or Aerotech of Louisville can probably provide more information.
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Re: Delco-Remy Pull Start

Post by 8413 »

Wow John, talk about unintended consequences. Cutting the cavity deeper and using a rubber seal makes the bushing stay dry and less material to handle the loads. I would have never thought of that. I suppose you could add a drop of oil to the exterior of the shaft occasionally, but that defeats the whole purpose of stopping an oil drip! Thank you for your valuable input.
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Re: Delco-Remy Pull Start

Post by 6643 »

Yeah, it's sort of lipstick on a bulldog. It would be better if the seal was on the outside of the bushing, but those seals are designed more for rotating parts, not sliding parts, so...
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