Farm Equipment - 200 cranking / starting trouble

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200 cranking / starting trouble

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=14835
Printed Date: 03 Feb 2025 at 11:08am
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Topic: 200 cranking / starting trouble

Posted By: island200
Subject: 200 cranking / starting trouble
Date Posted: 06 Jul 2010 at 9:14pm

We have owned our 1975 200 for 30 of its 35 years. It has always been a hard starting tractor. Are these tractors prone to some sort of hydraulic pressure buildup, at starting, that would make the tractor hard to start? This is a tractor that I have been extra vigilant to maintain the electrical system on since I thought this would be the logical place to start.

Replies:

Posted By: DrAllis
Date Posted: 06 Jul 2010 at 9:26pm

200's were hard starting because they were only 15 to 1 compression instead of 16 to 1 like 180-185-190-190XT. When overhauling I usually installed the higher compression stuff. Lowering injector pressures to 2800 psi from 3400 psi does help as well. Lucas brand starters were a negative versus a good old Delco-Remy starter.

Posted By: Kcgrain
Date Posted: 06 Jul 2010 at 9:31pm

If you lowered the injection pressure form 3400 to 2800 what did you do about the timing? It would be advanced quite a bit from an early injection

Posted By: DrAllis
Date Posted: 06 Jul 2010 at 9:40pm

Nothing....try it, you'll like it. Older 200's I oft times changed to advance so the timing could be retarded down to 18 degrees BTDC instead of 24 degrees BTDC to help starting. The injectors at 3400 psi are asking too much of a "DB" Roosa-Master pump, especially if the cranking speed is the slightest bit slow and the inj pump has much wear on it.