Construction and other equipment - Fuel Injection Pump

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Fuel Injection 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=205019
Printed Date: 22 Jan 2025 at 2:56am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Fuel Injection Pump

Posted By: dyounkin
Subject: Fuel Injection Pump
Date Posted: 20 Jan 2025 at 11:42am

Help Needed: I have a 645 Fiat Allis Wheel Loader. It's been a good machine, but my fuel injection pump has gone out. It is a 1978 645 Wheel Loader. Serial # 11Y05591

Engine Model #: 670I

Catalog #: EX45687

Engine Serial #: 70-29570

The pump that is currently in the machine is an American Bosch (Rotary)

The tag is not on the pump. Can anyone identify the pump #? The pump may have been changed out since the original build, I don't think so but who knows.

Does anyone know how to get the right parts to repair this without tearing the motor down, etc.

Replies:

Posted By: AC Mel
Date Posted: 20 Jan 2025 at 4:58pm

Dean...can you post a picture of the pump? what does the pump spec plate say?

Posted By: dyounkin
Date Posted: 20 Jan 2025 at 6:22pm

uploads/25415/Loader_Injector_Pump.jpg" rel="nofollow - uploads/25415/Loader_Injector_Pump.jpg

1978 FIAT ALLIS WHEEL LOADER

Fuel Injection Pump Identification Needed for rebuild kit OR compatible replacement pump. The pump tag has been removed.

Rotary Pump

Fiat Allis Loader Serial # 11Y05591 1978 Machine

Engine Model #: 670I

Catalog #: EX-45687

Engine Serial #: 70-29570

The casting #'s on the pump are: ER M-4xx

Posted By: AC Mel
Date Posted: 20 Jan 2025 at 7:50pm

Ok... that's a different version than I was expecting....I think we have some fuel pump books also.....I'll look tomorrow. I'm sure some one else will post up info.

Posted By: DrAllis
Date Posted: 20 Jan 2025 at 7:51pm

American Bosch M-100 pump about 90% the same as a 1066-1466 Farmall tractor. Any good injection pump repair facility will have no problem repairing it if that is the problem. What is it doing ??

Posted By: dyounkin
Date Posted: 21 Jan 2025 at 8:33am

The pump was not pumping fuel. Dribbling fuel. Cracked injector lines and dribbles. This machine is used to lift heavy pieces of rear load garbage truck packer bodies.

Posted By: DrAllis
Date Posted: 21 Jan 2025 at 11:29am

Remove the hose/line at the head of the pump (top) that is pointed "out". Crank the engine a bit. Fuel should gush from that hose. Are you sure you don't have plugged fuel filter(s) or the outlet to the tank isn/t letting fuel out ??