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D4400 Injector Parts?

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16 years 5 months ago #17955 by DEANO
D4400 Injector Parts? was created by DEANO
Does anyone know where to find parts for D4400 injectors? The part# on my injectors is 2A5210. I'm looking for the valve and the orifice plates in the bottom of the injectors. Your help is greatly appreciated. Thanks, Dean

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16 years 5 months ago #17967 by Old Magnet
Replied by Old Magnet on topic D4400 Injector Parts?
My fuel injection service manual shows five different fuel injectors for the 4-1/4 bore engine (D4400) but your number is not one of them. What is the actual application and is it the clamp down or threaded nut retainer style?

At one time the spray valve assembly and disc were available as a service group (once unit is identified). Individual parts might be hard to come by....haven't tried. Might try Cat or an old time fuel injection shop.

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16 years 5 months ago #17973 by DEANO
Replied by DEANO on topic D4400 Injector Parts?
OM,
The application is a 1940 112 Grader, serial #2M609 with the clamp-down style injector. I looked on an old Caterpillar parts microfieshe and I thought the part# for the injector was 2A5210 but I definately could be wrong. If you have any additional info I would appreciate it. Thanks, Dean

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16 years 5 months ago #17974 by Old Magnet
Replied by Old Magnet on topic D4400 Injector Parts?
Yours could just be a case of earlier version.
I show two unit part numbers for clamp down styles for the 4-1/4 bore.
2A4850 and 6B2845 valve assemblies.
Both use the 6B914 valve service group.
I do not have part numbers for individual service group parts.

Attached pic of what you would get with the valve service group....don't know where they may be obtained from but at least you'd be shopping for the right parts:) :)
The following user(s) said Thank You: wilcox

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16 years 5 months ago #17975 by DEANO
Replied by DEANO on topic D4400 Injector Parts?
OM,

Thanks for the info!! My valve groups don't have that fancy little dowel pin that indexes the valve to the orifice plate but I assume this would be a direct replacement. Thanks, Dean

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16 years 5 months ago #17976 by Old Magnet
Replied by Old Magnet on topic D4400 Injector Parts?
Yes, I believe they would interchange.
In spite of the warning I have heard of the discs being lapped and needles redone. Just need the proper equipment to do so. No recovery for a worn bore that I know of.

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16 years 1 week ago #23060 by catcrazy
Replied by catcrazy on topic Parts catalog
Its a pretty small world as the parts catalog that I just received in the mail from ebay is marked inside with the original owners serial number 2M578, which is very close to yours. My 112 is 2M487SP, just thought that I would let you know that.

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