Replacing fuel injectors

[Royboy]

Can someone inform me on whats involved in changing the fuel injectors on a Case 480C, and also where to purchase them on line?

 

[keh]

I'll assume they are like the injectors on a 580. If so, there should be a retainer holding the injector in. Remove bolt holding injector in. Injector is not threaded into the head, just a friction fit, I think slightly tapered, with slots on each side of the injector. Take two screwdrivers, one on each side and prize the injectors out. Case makes a special slide hammer tool to get them out, but they are pricey. Might try some penetrating oil.

Why replace the injectors? They are expensive and can usually be rebuilt. Take them to a rebuild shop and have them tested. They may not even need rebuilding, but on one that old they probably do. Rebuilding is not cheap either, but less than replacing.

KEH

 

[JDemaris]

I've got to disagree with KEH. I worked in several diesel pump shops back to the 1960s. We rebuilt many injectors - mainly those with replaceable tips. Pencil injectors don't have replaceable parts.
If you've got a 188D or 207D with Stanadyne pencil injectors - there is no way to rebuild them. They are "throw away" units. Anybody who claims to be rebuilding them is telling stories. Some places do, at times, clean and ajust them - and then resell - but they do not have any near the service life of a new injector. They are "cleaned and tested", not "rebuilt."
When injectors get worn - it is metal parts that wear out - and there is no good way to reclaim them with pencil injectors.
In regard to the large, full-size injectors - that's a different story. You can often buy brand new nozzles for $10 - $15 each and install - making the injectors as good as new.
In regard to the slide-hammer puller - it's made and sold by Stanadyne and OTC and sometimes sold through Ford, Deere, Case, Navistar, and General Motors. Some pencil injectors come out very hard. I've had to pull heads on several Case and Deere engines and then drive the injectors out from the inside. They are not tapered. They use a teflon carbon-stop seal inside the head - and if it burns off and gets run that way for a long time, the injectors get siezed - often to a point where a puller will break them off before they come out.
Pencil injectors are expensive. I suggest you get the OEM part numbers and then look around for a deal on "new-old-stock" somewhere. Last set I bought for my 207D - I wound up getting the best deal direct from a Case dealer.
Here are a few numbers for pencil injectors in Case 207D engines:
Case # A50970 (Roosamaster Stanadyne # 20552)
Case # A140827 (Roosamaster Stanadyne # 22365).