d14 compression
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=199727
Printed Date: 14 Nov 2024 at 7:56am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: d14 compression
Posted By: mhbier
Subject: d14 compression
Date Posted: 08 Feb 2024 at 3:21pm
| I bought a used D14 and would like to know the normal compression. Presently it is 115, 100, 100, 115. Is the normal? |
Replies:
Posted By: DrAllis
Date Posted: 08 Feb 2024 at 3:35pm
| All compression tests need to be done with a battery charger on the battery, all spark plugs removed and the throttle WIDE OPEN. Looks a little low to me ( 135 psi new engine spec) but you're opening a can of worms to improve it. If it runs fine and doesn't smoke BLUE when warmed up, leave it alone. |
Posted By: ACinSC
Date Posted: 08 Feb 2024 at 4:01pm
| Not sure if my gas D 15 is exactly the same , but my comp was around 140 PSI average when last I checked . Have had my head rebuilt . HTH |
Posted By: DrAllis
Date Posted: 08 Feb 2024 at 4:34pm
| D-15 series 1 are 160 psi new engine spec. |
Posted By: jaybmiller
Date Posted: 08 Feb 2024 at 5:40pm
|
According to the I&T manual, 135# at cranking speed. While 2&3 are a little lower than 1&4, it's probably just fine for a 70 year old... Meanwhile there's other things you can open your wallet for..... brakes, PTO O ring, 3rd gear, oil leaks, rear rubber,....... ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: Les Kerf
Date Posted: 08 Feb 2024 at 7:34pm
I would need more reasons than that to justify tearing it down. As Dr. Allis said, excessive blue smoke AFTER fully warmed up, massive oil consumption, coolant loss, hard starting etc.
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mhbier wrote:Posted By: mhbier
Date Posted: 09 Feb 2024 at 11:51am
| Thanks for your responses re: my d14. I am waiting for my manual in the mail. The rubber appears to be almost new. The tin has some high-altitude sunburn but otherwise is in great shape. The front end is very firm and solid. It looks like it was cared for in its earlier life and been sitting outside for some time in its later life. But for $1700. it looks like a good project. I haven't had an opportunity to really work the transmission, but it appears good. The only question is the power director. It seems to go into low alright but doesn't want to stay in high range. Any suggestions? |
Posted By: DrAllis
Date Posted: 09 Feb 2024 at 11:55am
| Start by removing the lever stop bolt for a test. |
Posted By: mhbier
Date Posted: 10 Feb 2024 at 10:32am
| moving the lever stop bolt took care of the problem |
Posted By: DrAllis
Date Posted: 10 Feb 2024 at 1:50pm
| Now, remove just enough flat washers to achieve the same thing. Technically, the stop bolt should be there. |
Posted By: mhbier
Date Posted: 10 Feb 2024 at 2:18pm
| Thanks, I did just that |