Timing question
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=112224
Printed Date: 14 Sep 2025 at 10:24am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Timing question
Posted By: Tractornewb
Subject: Timing question
Date Posted: 20 Sep 2015 at 4:02pm
| On my d15 I know where the hole to shoot the light is but all I can see is side of fly wheel ? Any direction as to where to find the marks ? |
Replies:
Posted By: wbecker
Date Posted: 20 Sep 2015 at 4:19pm
|
The marks are on the flywheel. "F" at 25 deg. BTDC, and "CENTER" at TDC. I like to paint the Fire mark with white paint so I can see it easy with the timing light. ------------- Allis B, IB, Low B, G, D10, JD M, 8KCAB, C152 |
Posted By: Tractornewb
Date Posted: 20 Sep 2015 at 4:30pm
| Hmm looking thru that hole I can see smooth side of flywheel and the ring gear but no marks? |
Posted By: DrAllis
Date Posted: 20 Sep 2015 at 5:01pm
| Carefully shove a large flat blade screwdriver in the hole while the engine is idling and hold it against the flywheel to scrape the rust off of it. Engine must be running WIDE OPEN throttle to adjust timing to the F-25 or FIRE mark. Always mark your distributor before you start changing things so you know where you exactly where you started from. |
Posted By: Tractornewb
Date Posted: 20 Sep 2015 at 5:30pm
I appreciate your help I did that with screwdriver. I must be missing something I just can't see anything on the wheel. It's defintaly straight on thru the view hole on the SIDE of the flywheel? |
DrAllis wrote:Posted By: DrAllis
Date Posted: 20 Sep 2015 at 5:50pm
| Side of the flywheel, yes. You must have the engine wide open speed and then maybe adjust/turn the distributor back and forth to get the flywheel mark to show in the center of the hole. MARK YOUR DIST BEFORE YOU START TURNING IT BACK AND FORTH. |
Posted By: Tractornewb
Date Posted: 20 Sep 2015 at 6:10pm
| Thanks so much doc for walking me thru that yup just moved a little and saw the mark ! Turned it back a little first it started to studder. Turned twoards the front and it ran great. Unfortunately I'm outta gas on it now and dark outside but will get it set tomorrow. Thanks again doc |
Posted By: Dan73
Date Posted: 20 Sep 2015 at 6:11pm
| Double check that your timing light is hooked up to the sparkplug wire for cylinder #1 in the very front of the motor. |
Posted By: Tractornewb
Date Posted: 20 Sep 2015 at 6:18pm
It was thanks though. Ran the damn thing right out of gas as soon as I turned that distributer forward it sounded so much better can't wait till tomorrow ! |
Posted By: Dan73
Date Posted: 20 Sep 2015 at 6:34pm
| Well don't feel bad I put 40 gallons through my d17 the last two days haying. It is a real bummer when you just get going on a project like that and run out. Sounds like tomorrow you should get some good results. Keep smiling it isn't snowing yet... |
Posted By: Tractornewb
Date Posted: 20 Sep 2015 at 6:45pm
| Got that right! |