D 15 valve tappet adjustment
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=193417
Printed Date: 20 Jul 2025 at 3:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D 15 valve tappet adjustment
Posted By: ACinSC
Subject: D 15 valve tappet adjustment
Date Posted: 10 Feb 2023 at 3:38pm
|
Just checked mine ( 149 gas engine ) and they're all about .015" . Some are a bit looser than others . Just wondered if anyone has a foolproof way to do this ? I had trouble keeping the gap from moving when I tightened the lock nut . Guess it would help to have an extra pair of hands . Thanks !
|
Replies:
Posted By: DrAllis
Date Posted: 10 Feb 2023 at 4:44pm
|
.015" COLD is what you want.
|
Posted By: ACinSC
Date Posted: 10 Feb 2023 at 5:19pm
Thanks Dr Allis. I'm checking them cold and I set them at.015" cold last summer. Just hard to get them all just right. For me anyway. On some my feeler gauge doesn't have the same "drag"
|
Posted By: ACinSC
Date Posted: 11 Feb 2023 at 1:29pm
|
Seems someone was asking about valve adjustment recently . I'm sure I learned it from this forum . Probably Dr Allis . THANKS ! Cold engine , pull plugs , big screwdriver in timing hole on flywheel teeth turns engine . Get #1 on compression stroke . On my engine the crank set screw is up , adjust #1 . Turn engine 1/2 turn , set screw down . Adjust #2 . Another 1/2 turn , adjust #4 . One last 1/2 turn , adjust #3 . Set all mine so there's a slight drag on the .015" feeler gauge . Hope this sounds right to everyone . THANKS again
|
Posted By: Clay
Date Posted: 11 Feb 2023 at 1:31pm
|
ACinSC, purchase a go-no-go feeler gauge set.
|
Posted By: ACinSC
Date Posted: 11 Feb 2023 at 1:40pm
|
THANKS Clay , just googled go no go feeler gauge . Never heard of them , have to get a set . I can use all the help I can get . THANKS , again !
|
Posted By: ACinSC
Date Posted: 11 Feb 2023 at 2:07pm
|
Just checked my engine compression . #1-135 , #2-140 , #3-145 , #4-150 . Still leaks down but not nearly as quick as before the head rebuild . Guess it's leaking past the rings ? A new set of Autolite 295 and I'm done . THANKS !
|
|