MBP-4301UT Starter

1950 - 1952, M38, questions, discussions, regarding anything related to the M38.
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Cannon Cocker
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MBP-4301UT Starter

Post by Cannon Cocker » Mon Jan 15, 2018 2:54 pm

I'm attempting to remove pivot for the housing. I've removed the switch housing, plunger w/spring and the pivot lock screw. According to the manual, I should be able to pull the yoke lever and pivot from the housing. Not budging. Am I missing something? Internals looks pretty rusty from what I can see. Prepared to use heat and other means but wanted to run it by you all beforehand. Thanks in advance.

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Jeeps4Brains
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Re: MBP-4301UT Starter

Post by Jeeps4Brains » Wed Jan 17, 2018 4:53 pm

I think you are right. All I can see is the set screw that is in this hole that retains the shaft.

Image

I am like you, you might need soak the shaft in penetrating oil and heat, cool and repeat until you can get it out.

On the later starter it was clear there was that screw and the angled piece of metal that retains it.

Image

Alan
45' MB, ??' MBT, 47' CJ2A, 48' CJ2A,
51' M38 #1, 51' M38 #2, 51' M100,
52' M37, ??' M101A1 (1st Gulf War Vet),
53' M38A1, 53' M211, 65' M151A1, 67' M416,
MVPA #31724

Cannon Cocker
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Re: MBP-4301UT Starter

Post by Cannon Cocker » Wed Jan 17, 2018 6:18 pm

Thanks. It's stubborn but so am I.

Radtech
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Re: MBP-4301UT Starter

Post by Radtech » Wed Jan 17, 2018 9:56 pm

It is more than likely rusted on to the yoke.Use penetrating oil on the shaft where it goes through the yoke.You need to work the yoke loose from the shaft.I would not use heat as you could damage the yoke and you will never find another.

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Re: MBP-4301UT Starter

Post by Cannon Cocker » Fri Jan 19, 2018 4:53 am

Finally got the starter disassembled. Looks like I'm going to need a clutch for it. Who supplies? Thanks-


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Re: MBP-4301UT Starter

Post by cjv-35 » Fri Jan 19, 2018 4:09 pm

Quarter Ton Military Parts-423-762-5858. Lists them under Eletrical-$55.00.

Cannon Cocker
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Re: MBP-4301UT Starter

Post by Cannon Cocker » Fri Jan 19, 2018 5:17 pm

I've already tried them. No joy for a MBP-4301UT clutch. Thank you for suggesting. I may have located a donor starter. Hopefully it'll checkout.

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Re: MBP-4301UT Starter

Post by Cannon Cocker » Mon Jan 22, 2018 1:19 pm

The donor turned out to be the wrong starter. Still looking for a clutch with little success. Another question - Does anyone know the purpose of the inner spring of the pinion shaft assembly? I think the outer spring, much larger, is a return spring but for the life of me I don't see what the purpose of the inner spring. I suspect it actuates something but what?

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Re: MBP-4301UT Starter

Post by Radtech » Mon Jan 22, 2018 8:22 pm

I think you lucked out.Look on ebay for M38 Clutch assy.G740.NOS the part number is also for the early starter.Initially I thought it was the clutch disk in unopened package until I looked and saw fingers holding it.

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Re: MBP-4301UT Starter

Post by Cannon Cocker » Tue Jan 23, 2018 4:50 am

Thank you, Thank you, Thank you. I bought it!

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