M Crawler Charging System
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=206158
Printed Date: 06 Apr 2025 at 9:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: M Crawler Charging System
Posted By: Lingle
Subject: M Crawler Charging System
Date Posted: 04 Apr 2025 at 7:01am
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Good day, I have a M crawler that runs great, someone put in a 12V battery but despite it having the provisions for a generator, there isnt one on the tractor so I have to jump start it sometimes. Anyone have photos of a M crawler, or a U tractor as I think they share the same engine, that could send some photos of the charging system on the engine? I got the crawler from MN from a Allis guy, thing is a beast so wanting to add a charging system and re-patch the block, seems like block cracking was common on these as both of my M's have cracked blocks. ------------- 35 and 41 WM crawlers, 49 WD, 53 WD45 wide front, 49 JD A, 52 JD B |
Replies:
Posted By: PaulRoidt(WI)
Date Posted: 04 Apr 2025 at 7:59am
 The generator is on backwards in this photo.
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Posted By: Lingle
Date Posted: 04 Apr 2025 at 9:35am
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Thanks! I may try to make a strap to go over the mount, what I wonder, as I havent removed it, is how do you replace the belt and tension it? Im lucky to have a 12V generator from a WD or WD45 with a external regulator that I could likely use, just need to think about the belt tensioning. Alternatively I could use a 12V internally regulated alternator, just have to make sure the speeds are high enough to charge appropriately. ------------- 35 and 41 WM crawlers, 49 WD, 53 WD45 wide front, 49 JD A, 52 JD B |
Posted By: PaulRoidt(WI)
Date Posted: 05 Apr 2025 at 8:05am
| Probably have to take the mag off. That shaft probably only turns 650 rpm high idle. The bracket that the generator is strapped to is slotted for adjustment. |
Posted By: Les Kerf
Date Posted: 05 Apr 2025 at 8:57am
If your generator is in serviceable condition I would certainly use it rather than spend money on an alternator. A voltmeter, rather than the original ammeter, is recommended. Does your generator have an actual regulator or is it just a cutout relay? It makes a difference as to the actual wiring needed.
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Lingle wrote: