Injector Pump Question

[Bob Rooks]

I hate to break it to you guys.. but there are injector pumps that are solely fuel lubed.. no share oil line.. and no oil sump. Rotary distribution pumps on some fords and new hollands use this method. ( others use inline pumps that have an oil sump, or share engine oil ).

Soundguy

So you are saying there is a swash-plate type injection pump somewhere that uses no lube oil whatsoever? I have not seen/done or know everything and would be the first to admit it, but that's a new one on me.

Greg,
Just think that there are two distinct sections of a pump; one lubricated by fuel, the other lubricated by lube oil.

 

[Willl]

I'm quite sure my JD 790 w/ Yanmar is fuel lubed.

 

[Bob Rooks]

I'm quite sure my JD 790 w/ Yanmar is fuel lubed.

I couldn't find those pics in your "bucket".

Here is some background on the "rotary" injection pump. http://files.asme.org/asmeorg/Communities/History/Landmarks/10001.pdf

 

[Willl]

those pics

I don't know what pics I could provide other than something out of my parts book.

There's definitely no path way for the oil to travel to and from the pump.

 

[Bob Rooks]

I apologize. I misinterpreted your signature as suggesting you had relevant/specific pictures.
Does your injection pump look like this? Robert Bosch type VE Diesel injection pump

 

[RobJ]

I hate to break it to you guys.. but there are injector pumps that are solely fuel lubed.. no share oil line.. and no oil sump. Rotary distribution pumps on some fords and new hollands use this method. ( others use inline pumps that have an oil sump, or share engine oil ).

Soundguy

I believe the same type of pump on the Perkins on the older MF tractors were fuel lubed. The bosch styles(w/built in gov) have a sump or share engine oil. The little 1-2-3-4 cyl bosch like on my Kubota use engine oil of course because half of the pump is in the crankcase, using the engine cam.

 

[Soundguy]

I'm talking CAV pump.. etc..

soundguy

 

[Bob Rooks]

CAV also makes inline pumps. They are a take-off of the RoosaMaster, which was used by Perkins almost exclusively except for their large V-engines.
http://www.oldengine.org/members/diesel/Injection/fuel1.htm

 

[michaelTS354]

This is exactly what happened to my ip. I have an 05 Kama Ts354c. It started off getting a little bit of fuel into the oil resvoir on the pump ,and got worse and worse. Eventually fuel was coming out the oil resivoir overflow/vent in a steady drip. I checked around for a pump rebuild but was better off getting a new pump. My dealer got me a pump for around $325 and my tractor has better power and no more missing. It takes a while for the pump to come from China though unless you find someone that has one in stock.

 

[doxford jim]

For the inline pumps that are fitted to our Chinese tractors that are getting fuel oil dilution of the lube oil, it is usually a sign that one or more barrels and plungers is leaking by. That means the pump elements are wearing and are quite worn.Often accompanied by an intermittent operation ( singe miss etc).
As Micheal says, pump replacement is usually the cure -or a rebuild.

The other confusion arose where someone said there are no fuel lubed fuel pumps - there are. That however, doesn't answer the original question.

Chinese in line pump replacement is probably the quickest and cheapest route. It should be mentioned that some sort of lubricity aid to the oil is a good investement, though not everyone agrees.

Jim