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willysmjeeps.com :: View topic - Starter Pedal and Starter yoke lever- 24v starter
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Starter Pedal and Starter yoke lever- 24v starter

 
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rgmutchler
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Joined: Sep 28, 2008
Posts: 213
Location: Caldwell, Texas

PostPosted: Sun Jul 28, 2019 3:39 pm    Post subject: Starter Pedal and Starter yoke lever- 24v starter Reply with quote

On my M38 I have installed the floor cover that contains the starter pedal. It aligns well with the starter yoke lever. I have no electrical hooked up as of yet.
When I depress the starter pedal it engages and pushes the starter yoke lever. When I release the starter pedal the starter yoke lever partially returns but doesn't do so all the way.
I have looked at the diagrams in the ord 9 and the autolite TM91825b and see no return spring associated with the starter yoke lever.
Am I missing something, should the starter yoke lever return toward the rear of the vehicle when the starter pedal is released or does the lever return to its rest position when the starter bendix releases.

[I have had the starter inspected and checked by a starter generator rebuild shop that is familiar with 24 volt starters etc]




Ralph
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mdainsd
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Posts: 285

PostPosted: Sun Jul 28, 2019 7:20 pm    Post subject: Reply with quote

You have the early M38 starter there. There is a large spring in the nose of it that is supposed to push everything back to the at rest position.

Those starters have a litany of design issues and those issues led to a replacement starter.

The problem being you cannot simply switch to the new starter design, the ring gear is different as are the mounting bolt diameters and locations.

Up in Wes' photo album he has a lot of detail about these two setups.

Back to the early starter, this is one of the failure modes of them, there are sliding o-rings and more monkey motion than you can shake a stick at in that little chamber of horrors. The O-rings gunk up and then the spring is no longer able to push everything back where it goes.

They are a bear to rebuild. But if you are capable, have tools including a press it can be done. I have several extra that I have gone through that I keep on the shelf to swap out on the two early M38s.

I don't see the manual for the starter in the download section, again check Wes' photo albums.
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wesk
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PostPosted: Sun Jul 28, 2019 11:45 pm    Post subject: Reply with quote

Quote:
I don't see the manual for the starter in the download section, again check Wes' photo albums.


It's there. It is TM 9-1825B. In downloads under the title page click on " 24 Volt Electrical Systems"

Quote:
Downloads Main Categories

The download files are copyright property of willysmjeeps.com or thier respective owners. These are free to download and print for personal use only. Please do not publish, transmit or reprint these in any form or any means, electonic, mechanical, including recording, photocopying, etc. or by any storage and retieval system without written permission of the website owners (Ryan Miller and Wes Knettle).

· 24 VOLT ELECTRICAL SYSTEMS
Miitary publications explaining the new 24 volt systems



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There are 153 Downloads and 46 Categories in our database


Then Under "24 Volt Electrical Systems" click on " TM 9-1825B NOV 1952 AutoLite Electrical Compnents " This is a link to the entire manual!

Quote:
Category: Main/24 VOLT ELECTRICAL SYSTEMS

Sort Downloads by: Title (A\D) Date (A\D) Popularity (A\D)
Resources currently sorted by: Title (A to Z)


Edit 24 Volt Fuel Tank Sending Unit
Description: Specifications for the 24 Volt fuel tank sending unit found on many 1950's era Military Vehicles. M38, M38A1, M34, M170, etc.
Added on: 17-Apr-2009 Downloads: 915

Edit 24 VOLT SYSTEM BASICS
Description: Military 24 Volt systems 1950's
Explains how the generator, batteries, regulator and distributor work.
Added on: 11-Apr-2009 Downloads: 1718

Edit Generator Polarization Basics 1956
Description: This applies to the original standard Generator for the M38 and M38A1 that are internally grounded. Describes the basics of what polarization is and how to do it.
Added on: 14-Jun-2009 Downloads: 625

Edit Military Wiring Numbering System
Description: Standard Electrical Wiring Numbering System for all Military Vehicles
Added on: 11-Apr-2009 Downloads: 1115

Edit Roscommon 24V to 12V MV conversion for US Fire Svc.
Description: US Fire Svc Roscommon Equip Ctr. 24 volt system conversion to 12V.
Added on: 01-Oct-2014 Downloads: 189

Edit Roscommon addition of 12V system to 24V MV
Description: Adding 12 volt components and circuits to a 24V MV
Added on: 01-Oct-2014 Downloads: 99

Edit Testing 24 Volt Electrical Systems 1956
Description: Testing the Regulator, Generator and the whole electrical system for 24 Volt military trucks circa 1956 U.S. Army Ordnance publication
Added on: 14-Jun-2009 Downloads: 1199

Edit TM 9-1825B NOV 1952 AutoLite Electrical Compnents
Description: Covers maintenance, repair and overhaul of AutoLite electrical equipment used on M series vehicles.
Added on: 10-Jun-2019 Downloads: 18


Edit TM 9-1825E Chap 4 Light Switch repair
Description:
Military manual on the light switch - dissassembly, repair/clean and reassemble


Added on: 10-Jul-2011 Downloads: 496

Edit TM 9-1825E Chapter 5 Repair & O/h of Electrical Connectors
Description: Bendix - Scintilla electrical connector repairs and overhaul.
Added on: 30-Dec-2015 Downloads: 272



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Wes K
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BCA
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Joined: Jul 02, 2011
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Location: Milton, Ontario

PostPosted: Mon Jul 29, 2019 6:25 pm    Post subject: Reply with quote

Ralph that’s a good photo of the way the pedal plunger engages with the lever on the early starter motor. I always thought that it looked poorly designed. Any shifting of the body due to worn or rotten hat channels would make direct contact of the plunger with the starter lever very troublesome. Also why is there a hole in the starter lever? Was there an additional bracket for the plunger to press against? ...... Brian
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wesk
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PostPosted: Mon Jul 29, 2019 8:42 pm    Post subject: Reply with quote

Quote:
Also why is there a hole in the starter lever? Was there an additional bracket for the plunger to press against?


The hole was not used with the M38.

I didn't find these early M38 starters any tougher than the late MCZ starter to rebuild.


Here's the pinion return spring.

The later MCZ starter is actuated by the pedal/lever and has the same issues with alignement.
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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Dmk67
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Joined: Jul 21, 2017
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Location: Rhode Island

PostPosted: Sat Aug 03, 2019 7:23 pm    Post subject: Reply with quote

Hello all,
Just wondering,(and I admit I haven’t hit the books prior to asking this question and I suppose I will be criticized for it... but here goes), if these early starters are “a chamber of horrors” as I think it was said, is there any preventive maintenance or routine inspections we with these early starters could or should be preforming ?
Thanks!
Dave In RI
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