Ive been rebuilding those pumps for over 40 years now. That oil you took out showed the slightest amount of diesel in it. Thats entirely normal. Ive seen them full to the top of the filler plug with diesel. Same oil as the engine Nothing heavier than 40weight oil.
You are lucky too because you have on the side door of that injector pump a gauze breather which very few came with. This stops pressure building up in the cambox of the pump which can lead to oil leaking externally or out thru the camshaft oil seal stii g behind the timing gear. Also I see that underneath the side door the overflow pipe looks like it has been removed and a plug fitted. Not detrimental but I like to fit the short overflow pipe so when you see a drip coming out of it you know theres an issue happening inside the pump and it can be sorted out.
I've been changing the oil at 50bhour intervals. Last time I sent a sample to Blackstone and it came back good with negligible diesel traces and really low metals. I plan to take it off and clean it up but not mess with internals unless there's a problem.
Overflow came that way. I do measure what comes out at changes to make sure it's not filling with diesel. I suppose I could put the overflow back in but haven't had any issues in the last year.
Is the pump going to come out to remedy a leak? Make sure you have a flexible head mirror to find the timing mark in the bellhousing. Heres a tip we have been doung for as long as Ive been alive: When you find your timing mark looking thru the hex plug in the mounting flange of the pump and you are happy its at 20-22btdc on marks on flywheel. Drill a hole thru gearbox bellhousing into the flywheel. Then when pump has to come off again you simply rotate engine by hand until a pin goes thru the hole into the flywheel locking it in its correct timing position. Simple and effective.
Where does the injector return hose go? Virtually nothi g should be coming out of it if the injectors are in good nick. A lot of people let it drain into a container and simply tip it back into the tank.
Ive been rebuilding those pumps for over 40 years now.
That oil you took out showed the slightest amount of diesel in it.
Thats entirely normal.
Ive seen them full to the top of the filler plug with diesel.
Same oil as the engine
Nothing heavier than 40weight oil.
You are lucky too because you have on the side door of that injector pump a gauze breather which very few came with. This stops pressure building up in the cambox of the pump which can lead to oil leaking externally or out thru the camshaft oil seal stii g behind the timing gear.
Also I see that underneath the side door the overflow pipe looks like it has been removed and a plug fitted. Not detrimental but I like to fit the short overflow pipe so when you see a drip coming out of it you know theres an issue happening inside the pump and it can be sorted out.
I've been changing the oil at 50bhour intervals. Last time I sent a sample to Blackstone and it came back good with negligible diesel traces and really low metals. I plan to take it off and clean it up but not mess with internals unless there's a problem.
Overflow came that way. I do measure what comes out at changes to make sure it's not filling with diesel. I suppose I could put the overflow back in but haven't had any issues in the last year.
Is the pump going to come out to remedy a leak?
Make sure you have a flexible head mirror to find the timing mark in the bellhousing.
Heres a tip we have been doung for as long as Ive been alive:
When you find your timing mark looking thru the hex plug in the mounting flange of the pump and you are happy its at 20-22btdc on marks on flywheel. Drill a hole thru gearbox bellhousing into the flywheel. Then when pump has to come off again you simply rotate engine by hand until a pin goes thru the hole into the flywheel locking it in its correct timing position. Simple and effective.
Where does the injector return hose go?
Virtually nothi g should be coming out of it if the injectors are in good nick.
A lot of people let it drain into a container and simply tip it back into the tank.