Construction and other equipment - 715B

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715B - TLB starter

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=204468
Printed Date: 25 Dec 2024 at 12:31am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 715B - TLB starter

Posted By: Coke-in-MN
Subject: 715B - TLB starter
Date Posted: 08 Dec 2024 at 10:58pm

As mentioned in last post changed fuel filters on the Perkins 4-236 and when going to restart - noise from starter - Nose Cone on starter broke off was found after removing it , cast housing completely severed from mounting flange .
So out to storage and found 3 starters off my White 6-200A gas engine with same bolt pattern . Steal nose casting off one and put it on my broken starter . Used solonoid and the arm that moves the starter drive off same starter . Put back onto machine and drive will not go into flywheel ( just powers up motor to spin )
As it got up to 45 F yesterday pulled starter off (outside in parking area) and checking found the solonoid plunger seemed to have a lot of play but when checking closer the dogs on the end of the lever that engage into starter drive were worn down , both sides show heavy wear . Found another arm on another starter so back together and actually works .
Starter has 3 bushings in it - both ends and a intermediate bearing at start of nose casting and armature . Little more involved in assembly as in stages putting back together . OH and after getting it running - the 10SI alternator isn't charging - another tomorrow job .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Replies:

Posted By: Coke-in-MN
Date Posted: 20 Dec 2024 at 11:12pm

10SI alternator has a tach drive terminal , so 3 terminals from top of case .
Just replaced alternator with one off a GM vehicle (unsure of what) and now have charge , brushes worn and commentator worn with deep groves - might take armature from another unit , replace brushes and see if diode trio is good - warm weather project .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: orangeman
Date Posted: 21 Dec 2024 at 9:05am

Coke: Am wondering about the design life of the starter - was it the OEM starter? If so assuming your 715 is a B Series that's a 40 + year design life.

Here's a good read on the initiation of electronic starter development for internal combustion engines ~ link here: https://markstrecker.com/invention-of-the-auto-electric-starter.html" rel="nofollow - https://markstrecker.com/invention-of-the-auto-electric-starter.html

Keep up the good work!

Posted By: Coke-in-MN
Date Posted: 21 Dec 2024 at 1:46pm

this is the 3rd time starter has been worked on - 2nd time nose cone broke ,
I bought the machine in 88 with 2,000 hours on it from municipality use .
Why the cone broke hard to say as was a fresh crack , no rust or discoloration along fracture

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."