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Start me up
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   Forward Look Technical Discussions -> Electrical, Battery and ChargingMessage format
 
wizard
Posted 2019-03-27 12:58 PM (#579982)
Subject: Start me up



Board Moderator & Exner Expert 10K+

Posts: 11929
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Location: Southern Sweden - Sturkö island
Last summer I noticed that the starter missed once - not good, so total teardown and checks.

First of all, all parts carefully cleaned according to the fsm.

Normally, I start with polishing up the commutator in the lathe with emery cloth for to have a clean even surface for the tests.

Thereafter I test the shaft for runout - 1st photo, 0,02mm (0,0005")

Next I test the commutator for runout - 2nd photo, 0,03mm (0,0015")

The armature is tested for ground - 3rd photo, no problems

The armature is tested for short - 4th photo, no problems

Then the commutator is undercut with a modified saw blade - 5th photo.

Finally, the commutator is polished again in the lathe.





(1_Testing commutator for runout.jpg)



(2_Testing shaft for runout.jpg)



(3_Testing the armature for ground.jpg)



(4_Testing the armature for short.jpg)



(5_Undercutting commutator.jpg)



Attachments
----------------
Attachments 1_Testing commutator for runout.jpg (136KB - 25 downloads)
Attachments 2_Testing shaft for runout.jpg (188KB - 27 downloads)
Attachments 3_Testing the armature for ground.jpg (159KB - 24 downloads)
Attachments 4_Testing the armature for short.jpg (161KB - 25 downloads)
Attachments 5_Undercutting commutator.jpg (214KB - 26 downloads)
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wizard
Posted 2019-03-27 1:34 PM (#579984 - in reply to #579982)
Subject: Re: Start me up



Board Moderator & Exner Expert 10K+

Posts: 11929
50005000100050010010010010025
Location: Southern Sweden - Sturkö island
The reson for that the starter whined and missed once last summer seems to be that the splines for the drive on the shaft dried out - no grease left.

The bushings are totally ok.

Next step will be the solonoid, pictures will follow.

It's amazing that the starter is in excellent shape after next to 60 years of age - they knew how to make quality stuff back then.


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wizard
Posted 2019-03-28 6:51 AM (#580019 - in reply to #579982)
Subject: Re: Start me up



Board Moderator & Exner Expert 10K+

Posts: 11929
50005000100050010010010010025
Location: Southern Sweden - Sturkö island
I made a tool for to carefully demount and mount the snap ring - 6th and 7th photo.

I also made a brush-holder ring out of soft plastic for easy assembling of the starter - 8th and 9th photo.

Now the starter is preassembled, awaiting the solenoid - 10th and 11th photo.



(6_Tool demonting-mounting.jpg)



(7_Tool demonting-mounting_1.jpg)



(8_Tool brushes.jpg)



(9_Tool brushes_1.jpg)



(10_Preassembling.jpg)



(11_Preassembling_1.jpg)



Attachments
----------------
Attachments 6_Tool demonting-mounting.jpg (259KB - 25 downloads)
Attachments 7_Tool demonting-mounting_1.jpg (258KB - 24 downloads)
Attachments 8_Tool brushes.jpg (190KB - 23 downloads)
Attachments 9_Tool brushes_1.jpg (157KB - 28 downloads)
Attachments 10_Preassembling.jpg (188KB - 29 downloads)
Attachments 11_Preassembling_1.jpg (183KB - 26 downloads)
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wizard
Posted 2019-04-01 12:24 PM (#580249 - in reply to #579982)
Subject: Re: Start me up



Board Moderator & Exner Expert 10K+

Posts: 11929
50005000100050010010010010025
Location: Southern Sweden - Sturkö island
The old solonoid was worn, but would still have worked for many years - 12th photo.

The contact plate and washer new NOS aftermarket - 13th photo.

The starter ready for mounting - 14th and 15th photo.

Now the starter is ready for the next 60 years





(12_Old solonoid2.jpg)



(13_New contact washer1.jpg)



(14_Ready for mounting.jpg)



(15_Ready for mounting1.jpg)



Attachments
----------------
Attachments 12_Old solonoid2.jpg (254KB - 22 downloads)
Attachments 13_New contact washer1.jpg (160KB - 22 downloads)
Attachments 14_Ready for mounting.jpg (198KB - 22 downloads)
Attachments 15_Ready for mounting1.jpg (169KB - 22 downloads)
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miquelonbrad
Posted 2019-04-02 10:09 AM (#580286 - in reply to #579982)
Subject: Re: Start me up



Expert

Posts: 1678
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Location: Hay Lakes, Alberta, Canada
Very nice!!! :D I especially like the brush holder ring!
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jboymechanic
Posted 2019-04-02 10:46 PM (#580316 - in reply to #579982)
Subject: Re: Start me up



Expert

Posts: 1507
1000500
Location: Muskego, WI
My factory starter for my '56 Imperial is the same (or very similar), but I need a new solenoid and linkage to actually kick the starter gear out. Do you know where these parts can be sourced? I have been using the starter on my friends 1954 Dodge 240 hemi that we run on a stand occasionally, I have to pull the lever back by hand to engage the starter.
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wizard
Posted 2019-04-03 1:33 AM (#580324 - in reply to #579982)
Subject: Re: Start me up



Board Moderator & Exner Expert 10K+

Posts: 11929
50005000100050010010010010025
Location: Southern Sweden - Sturkö island
As for the solonoid, there's on on Epain right now https://www.ebay.com/itm/1956-1960-Chrysler-DeSoto-Starter-Solenoid-...

For the plunger and linkage, try with Big-M
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