Farm Equipment - D14 valve Lash

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D14 valve Lash

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=193218
Printed Date: 12 Nov 2024 at 3:56am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D14 valve Lash

Posted By: Dean
Subject: D14 valve Lash
Date Posted: 01 Feb 2023 at 10:56am

I had a machine shop do a complete valve job on the head of my D14. How do I set the value lash? I have an original AC service manual but it doesn't describe the process just says the clearance. Can anyone help with the process? This is my first attempt at a complete engine rebuild. Thanks

Replies:

Posted By: Jim.ME
Date Posted: 01 Feb 2023 at 4:42pm

Here is a link to an I&T manual, you can download and save, for the D14 and others that will give you a method of adjusting the valve lash. There are other methods some may prefer, but this one will give you a starting point.

https://archive.org/details/allis_chalmers_tractor_models_D14_D15_D17_shop_manual_" rel="nofollow - https://archive.org/details/allis_chalmers_tractor_models_D14_D15_D17_shop_manual_

Posted By: steve(ill)
Date Posted: 01 Feb 2023 at 5:11pm

Basically you want the piston at top dead center with both valves closed.. If you can see the timing mark, use that... If you pull out a spark plug, you can check piston at TOP with a dowel thru the hole... as you rotate the motor, the intake valve opens, then approx half a crank rotation and you are at TDC on the compression stroke... Easy way is to do that 4 times, once for each cylinder.

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Like them all, but love the "B"s.

Posted By: DrAllis
Date Posted: 01 Feb 2023 at 5:26pm

The crankshaft pulley (if you can see it) has a setscrew that retains it to the crankshaft. When that setscrew is straight up or straight down, two pistons are at TDC and the other two are at BDC. Set all valves at .015" COLD.

Posted By: Dean
Date Posted: 01 Feb 2023 at 5:48pm

Thanks, that will work perfect, I have the engine on a stand!

another question: #1 cylinder is closest to the fan, Correct?

The engine turns clockwise when looking from the flywheel forward, is that correct?

Posted By: Dean
Date Posted: 01 Feb 2023 at 5:50pm

thanks very helpful!

Posted By: Dean
Date Posted: 01 Feb 2023 at 5:51pm

Thanks the manual is helpful

Posted By: steve(ill)
Date Posted: 01 Feb 2023 at 5:53pm

yes...#1 at radiator... and you should be able to start with #1 at COMPRESSION at TDC.. adjust.. rotate 180 degrees as Dr said to get #2 to the top.. set, then 180 degrees to #4... then 180 degrees to #3........ 1-2-4-3

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Like them all, but love the "B"s.

Posted By: DrAllis
Date Posted: 01 Feb 2023 at 5:58pm

ENGINE TURNS CCW when sitting in the seat.

Posted By: Dean
Date Posted: 02 Feb 2023 at 10:49am

Thank You, I have a lot to learn.

Posted By: Dean
Date Posted: 02 Feb 2023 at 10:50am

Thank You