Construction and other equipment - D Grader Diesel Engine and Injector Pump

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D Grader Diesel Engine and Injector Pump

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=173596
Printed Date: 14 May 2025 at 7:05pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D Grader Diesel Engine and Injector Pump

Posted By: Ian Beale
Subject: D Grader Diesel Engine and Injector Pump
Date Posted: 16 Aug 2020 at 5:34pm

A neighbour has one and he's looking for a replacement pump.

Just curious as to what they used

TIA

Ian

Replies:

Posted By: DrAllis
Date Posted: 16 Aug 2020 at 6:57pm

I thought all "DD" graders used the Buda 230 diesel engine similar to the WD45 tractor. If so, it should be an American Bosch rotary injection pump. Now, if someone has transplanted a Buda 262 engine from a D-17 in it, they used a RoosaMaster injection pump.

Posted By: Calvin Schmidt
Date Posted: 18 Aug 2020 at 6:25am

D and DD graders had the same engines as current tractors. When the D-17's arrived, they had the G-226 and the 262 diesel. Check the grader serial number for the year.

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Nothing is impossible if it is properly financed

Posted By: Steve allis dozer
Date Posted: 20 Aug 2020 at 8:25pm

Hi Ian some of the early diesel graders here had CAV pumps i will check mine and hopefully get some numbers for you

Posted By: Ian Beale
Date Posted: 21 Aug 2020 at 4:24am

Thanks everyone.

Seems this is a 260 with a Roosa and the pump must be sick. I don't know why not rebuildable.

Steve - if a CAV might swap it would probably widen his possibilities down here