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Fuel Injection Pump
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dyounkin View Drop Down
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Joined: 20 Jan 2025
Location: Minnesota
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dyounkin Quote  Post ReplyReply Direct Link To This Post Topic: Fuel Injection Pump
    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.
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AC Mel View Drop Down
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1111 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jan 2025 at 4:58pm
Dean...can you post a picture of the pump? what does the pump spec plate say?
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dyounkin View Drop Down
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Joined: 20 Jan 2025
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dyounkin Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jan 2025 at 6:22pm

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
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AC Mel View Drop Down
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1111 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post 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.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20873 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post 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 ??
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dyounkin View Drop Down
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Joined: 20 Jan 2025
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dyounkin Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 10 minutes ago 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.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20873 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 15 hours 14 minutes ago 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 ??
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