Construction and other equipment - Hd6 fuel return lines.

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Hd6 fuel return lines.

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=207122
Printed Date: 31 Oct 2025 at 6:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Hd6 fuel return lines.

Posted By: Primos75
Subject: Hd6 fuel return lines.
Date Posted: 16 Jun 2025 at 7:19pm

Hello gentleman, got another question. In this process of getting this thing rebuilt. I'm looking at the fuel line that return back to the pump from the injectors. Each connector has a rubber bushings on the flared end of the copper line. Those bushings are in real bad shape. Falling apart and can't be used. What do we replace them with? Is there new fittings we can use or who has any ideas? Thanks in advance.

Replies:

Posted By: gemdozer
Date Posted: 16 Jun 2025 at 8:00pm

Is it the one with the injector on the head or the one with injector on the side

Posted By: Primos75
Date Posted: 16 Jun 2025 at 8:02pm

I believe it's a 6000 series. Injector at slight angle in top of head

Posted By: gemdozer
Date Posted: 17 Jun 2025 at 7:53pm

I have the return line butall the rubber are no good on

Posted By: Primos75
Date Posted: 18 Jun 2025 at 12:03pm

Thanks, that's what I'm looking in to. Trying to find replacement rubber

Posted By: DMiller
Date Posted: 18 Jun 2025 at 2:16pm

Any Fuel Injection Shop will have those, Are typical on any Roosa Master or Bosch style return line. Just take a line with you and they will understand.

Posted By: Primos75
Date Posted: 19 Jun 2025 at 1:36am

Out of curiosity what is the psi on the return line?

Posted By: DMiller
Date Posted: 19 Jun 2025 at 2:45am

So long as Not Restricted, less than 5psi.

Posted By: AC Mel
Date Posted: 19 Jun 2025 at 10:10am

Assuming those are part number 70917806....They are available from Minparr...for $2.43 ea.. I just ordered 15 yesterday....for 2 sets of 11000 engines and some for spares.