Is my hole in the right spot
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=188844
Printed Date: 26 Sep 2025 at 6:28pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Is my hole in the right spot
Posted By: marzer
Subject: Is my hole in the right spot
Date Posted: 13 Jun 2022 at 11:29am
Is the oil hole in the rocker shaft oriented correctly? I put it together as taken apart but I don't know if the last guy who had it apart put it together right. This is the engine that had the valves in the wrong locations so I don't trust anything. Any help is appreciated.  
|
Replies:
Posted By: PaulB
Date Posted: 13 Jun 2022 at 12:58pm
|
I would think the hole should oriented toward the bottom as that would be the wear will occur. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: steve(ill)
Date Posted: 13 Jun 2022 at 1:08pm
|
does the oil come up thru an oil passage in the block and thru a hollow cam shaft holder and then into the hollow cam shaft ?? .... I think the hole in the cam shaft INSIDE the tower should line up to get max oil into the camshaft ??? Then see how to FOLLOWERS fit ? ------------- Like them all, but love the "B"s. |
Posted By: marzer
Date Posted: 13 Jun 2022 at 2:48pm
| The engine is a d2800 in my 180. According to the service manual the shaft should have camshaft side etched into it but I can't see it. As it is there isn't much oil moving around in the top end. The tappet cover is dry. I would think more oil should be flying around up there. |
Posted By: steve(ill)
Date Posted: 13 Jun 2022 at 4:12pm
|
YEP.... how does the oil get TO THE TOP END ?? ------------- Like them all, but love the "B"s. |
Posted By: marzer
Date Posted: 13 Jun 2022 at 5:35pm
| Oil comes up thru pressure passage in the block and head then thru a steel line and into the rocker shaft. There is good volume of oil coming out of the return line. If I plug the return more oil comes out around the rocker arms. |
Posted By: steve(ill)
Date Posted: 13 Jun 2022 at 8:13pm
|
why is there a return line ? why not DUMP all the oil onto the rockers and let it run back down the drain hole ? ............. i assume there is a drain hole ?
(im not a 2800 "GUY" .......... just asking a question ... never seen a "return line" ) ------------- Like them all, but love the "B"s. |
Posted By: MACK
Date Posted: 13 Jun 2022 at 9:29pm
|
If I remember correctly, it is right. The reason for a return tube was to return oil down front push rod hole to keep from fluding top of head. MACK
|
Posted By: marzer
Date Posted: 14 Jun 2022 at 11:01am
|
The rocker shaft is in right. I found the cam side etching where the book shows it. Very faint but it's there. I am going to change the rocker shaft plugs and restrict the drain line. Hopefully that will help with oiling. Thanks for the help. |