Greetings and an SD22 Lift Pump ?

SD diesels were widely available in the US in the 1981-86 Datsun/Nissan 720 pickups, and in Canada through '87 in the D21 pickup.

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Barkeywayne
Posts: 2
Joined: 1 day ago

Greetings and an SD22 Lift Pump ?

#1

Post by Barkeywayne »

Hello all, new owner of a Chrysler-Nissan SD22PU engine here.

Just acquired a Chicago Pnuematic CP185 air compressor with an SD22 Nissan diesel installed. This is a Chrysler CN4-33 variant.

Have been trying to get it running and am thinking it may need a new lift pump. It is a mechanical diaphragm-type pump with an inverted glass fuel separator bowl, as pictured.

Was wondering if anyone had any idea where I might source this pump or even a rebuild kit for it? I can provide any other info if you need it.

Any ideas would be greatly appreciated, thanks!
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CP185 Compressor Lift and Injector Pump 03-18-2026.jpg
CP185 Compressor Lift and Injector Pump 03-18-2026.jpg (251.99 KiB) Viewed 49 times
CP185 Compressor Engine ID Tag 03-18-2026.jpg
CP185 Compressor Engine ID Tag 03-18-2026.jpg (327.73 KiB) Viewed 49 times
Chicago Pnuematics CP185 Air Compressor
Chrysler-Nissan SD22PU (CN4-33) Diesel Engine, Serial #112529
Southwest Missouri, USA
waynosworld
Posts: 599
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Location: Vancouver Washington USA
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Re: Greetings and an SD22 Lift Pump ?

#2

Post by waynosworld »

I am not familiar with this part, it might take some time to get a response, you could try asking a forklift business or a diesel injection service place, they see all sorts of stuff.
I know the voices are not real,
but they have some really good ideas.
Barkeywayne
Posts: 2
Joined: 1 day ago

Re: Greetings and an SD22 Lift Pump ?

#3

Post by Barkeywayne »

I have spoken with a local diesel injection service and a place that specializes in foreign gas and diesel engine repair in general. I will see what I can find out from a forklift service.

The injection service told me the injector pump (Nihon-Cav brand) was looking for 3-7 psi on the diesel supply line from the lift pump.

My plan is to find a complete OEM-type replacement mechanical lift pump or a rebuild kit for it...if I can't find that to convert to a low pressure electric fuel pump to replace the mechanical one.

Thank you for your reply waynosworld.
Chicago Pnuematics CP185 Air Compressor
Chrysler-Nissan SD22PU (CN4-33) Diesel Engine, Serial #112529
Southwest Missouri, USA
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