Farm Equipment - C Timing Jump

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C Timing Jump

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=13950
Printed Date: 01 Jan 2026 at 6:30am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: C Timing Jump

Posted By: Craig Reavley
Subject: C Timing Jump
Date Posted: 16 Jun 2010 at 7:56am

Reset timing on my C and it started and ran. Shut it off, and went to start again, and the timing was off once again. Pulled the distributor out of the hole, and now notice that the gear down inside the distributor move forward and backward much more than I think it should. I belive this play is alowing the distributor drive gears to jump off a gear. This is the distributor that has the 2 dog ears that lock in where the mag was. It does not have the shaft that goes all the way through to the governor. Is there a bushing that may be out???? I had to leave for a school board meeting, and didnt get it all the way apart. As I rotated the distributor I could see the bottom gear moving forward and backward at least a quarter inch. Any thoughts.

Replies:

Posted By: Bill Long
Date Posted: 16 Jun 2010 at 10:24am

Craig, You might want to contact SteveNJ - B&B Circuits. He is the resident expert on electrical items for AC units. He may be well aware of what you speak.

As stated in earlier posts since all the timing connections are gear driven it is considered difficult for your tractor to "jump timing" However, you seem to have hit on your problem.

Contact Steve he may have your fix in hand.

Good Luck!

BillLong

Posted By: Dick L
Date Posted: 16 Jun 2010 at 11:37am

Yes the bushing at the bottom of the stem can get that bad. Once upon a time you could get the bushings at NAPA. They seem to have been slipping on older parts as of late but still worth a try as long as the gear teeth are not damaged.

Posted By: Brian Jasper co. Ia
Date Posted: 16 Jun 2010 at 11:59am

NAPA got away from Sealed Power and doing so they pretty much eliminated old AG engine parts. At least thats what the manager at the Newton (Company Owned) store told me.

Dick, you have any pictures of what Craig is talking about? I have a governor gear out of a 125 engine for a mag. I'm wondering how that can happen. I thought the distributor laid horizontal and just butted up against the flange the mag attached to.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: ALinIL
Date Posted: 16 Jun 2010 at 4:04pm

Craig- Get the size and call or go to Motion Industries. Don't know your location, but I go to Joliet or KKK. - AL