apache

I read somewhere here that on some early injector pumps there might be a rubber boot, looks like a vent pipe on the side nearest the fender well. It was saying if your truck sits for long periods to squirt some lubricant in it to prevent something from freezing up, (rust).it goes to the internals of the pump for ???
Also curious the 350 we just bought is missing the engine ID tag on the timing cover. Will this present problems for parts??
Thank You.

frostie

I havent heard about the rubber boot. I will have to look at my pumps, mine are 92s.
The tag on the engine is kind of important. Cummins guys are lost without the info. I would find someone with a 93 and write down there serial number and CPL number. that way the parts guys will be happy and you will be able to get parts.

apache

I have 2 93s,the other has the tag, could I assume there the same info? I will look at production date for mfg of trucks also.

Monty

I think the rubber boot you refer to is on the backside of the AFC head. It protects the AFC vent.

Here is a picture that shows the rubber boot.

apache

Thats it, I found the article:" some of you may have noticed a small rubber boot on the upper part of your pump near the diaphram. If you take it off and remove the little nut under it you can use WD-40 or something like it to squirt some lubricant in it. Do it anually. It may save you quite a bit of money on pump repairs on rarely driven trucks. make sure you put the boot back to keep dirt and moisture out" quoted from Power wagon.

Alec

I suppose the idea is to lubricate the AFC eccentric and keep the pump pin from sticking -- I am not sure that I would squirt WD-40 in there, though, as that would wash away the light coat of grease that should be in there . . . and I don't think it would do anything for a sticking fuel pin, which is the real potential problem.

Bushy

Ya, I'd kinda hold off on that one too... no disrespect to PW intended.
You will be going in there to fiddle with your performance settings eventually anyway.
That rubber boot covers a horse hair filled breather.
The primary problem inside that housing is the guide pin.
I'd rather not have any lub sloshing around in there...

Pastor Bob..