Injector pump

oldtanker · Dec 10, 2011

BIL has an 826 IH. The injector pump has issues. How hard is an injector pump to rebuild? Special tools? I may try it if it isn't too bad. Just never done one.

Thanks

Rick

LJD · Dec 10, 2011

Like anything mechanical, you need the tools, skills and knowledge. With some pumps, repair manuals are easily available free, parts are cheap and few special tools needed. With others, not so good.

Stanadyne/Roosamaster and CAV rotary pumps are probably the easiest in general.

Tony in Mass. · Dec 10, 2011

I did mine this summer, a CAV on a Standard engine. The whole tractor was a junked lemmon, I never rebuilt a diesel before, and this pump was also not good- I wanted to try doing both myself- I wasn't going to be intimmedated another decade like it was a magical object fallen to earth.

$38 including shipping from Grigg's lawn and garden, Gulfport? Miss. NO directions!It took me 2 and a half tries, and another few days to finally get it to quit leaking.... I was never impressed with diesels, especially this one. The kit from Grigg's seemed to be for CAV only, but there has to be a kit around for whatever he has on the IHC....
I lost my favorites folder when my harddrive quit last week, but on the fergie or massey forum, the guys that sent me an online manual I'm certain will send it to you. They all can't be that different. You can search the archives there and see what pics I posted there come up too. This was not a walk in the park.
I have always been dissappointed in diesels in general, and after rebuilding the engine and pump on this one.... I still like my carborated Continentals best...

Bob Huntress · Dec 10, 2011

The big issue is to make sure that you have a very clean place to work, and you keep everything clean. The tolerance are very tight, so any foriegn matter will be a big problem. To give you an idea how tight the tolerances are, when I was at Navy EN "A" school took the injector from a Dietroit 71 series, and held up the barrel and plunger. He then set the plunger on the opening in the barrel and began talking. A few minutes later as the parts cooled from his touch, the plunger rattled a bit and slide into the barrel. That's how close the tolerances are on injector pumps as well. The injector pumps are not complicated. They just require a clean system.

Injector pump

oldtanker

Well-known Member

LJD

Well-known Member

Tony in Mass.

Well-known Member

Bob Huntress

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