D2900 head advice
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=86891
Printed Date: 07 Sep 2025 at 4:07pm
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Topic: D2900 head advice
Posted By: CAL(KS)
Subject: D2900 head advice
Date Posted: 23 Mar 2014 at 7:25pm
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Is there any hope for a cylinder head with damage in the injector seat area where the copper washer goes? Could it be machined down and had a small sleeve or spacer installed?
I should mention that it has already been surfaced and had all new valves and seats installed.  Id rather not explain why ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Replies:
Posted By: DrAllis
Date Posted: 23 Mar 2014 at 8:52pm
| Has to be awfully bad to not seal with a new copper washer installed the correct way and bolts torqued up tight. There used to be a tool to dress those up if they got damaged, but I don't have one. |
Posted By: MACK
Date Posted: 23 Mar 2014 at 10:15pm
| I have taken a endmill and turned it by hand to smooth it up. MACK |
Posted By: BradRisen
Date Posted: 23 Mar 2014 at 10:58pm
| Dr.allis,would a " counterbore tool" like machine shops use, work to re- surface the area around the injector? I have a set in my shop that has a hole in the end of each counterbore ,with a set screw , I just turn out the size of the pilot needed to fit the hole on the work piece , in my turning lathe,insert it into the end of the counterbore, tighten the set screw ,and it is ready to use. |
Posted By: Big Orange
Date Posted: 23 Mar 2014 at 11:30pm
| Like Dr.Allis said copper is very forgiving, if you do machine it too much, the injector tip can hit the piston + you said head has been surfaced, so be careful. GOOD LUCK |