Shenniu Bison 254 Injector pump

[Pieter Joubert]

I have this two cylinder model that I use for grass cutting.
My tractor developed a problem, diesel is leaking into the oil sump.
I have checked and it does not go through the cylinders.

The only other possible connection to the engine is on front of the injector pump where attaches to the motor.

How do I get this pump off the motor, I removed the three bolts but it does not budge.

Any advice?

 

[loggin]

I have this two cylinder model that I use for grass cutting.
My tractor developed a problem, diesel is leaking into the oil sump.
I have checked and it does not go through the cylinders.

The only other possible connection to the engine is on front of the injector pump where attaches to the motor.

How do I get this pump off the motor, I removed the three bolts but it does not budge.

Any advice?

Could you perhaps show us some pictures and maybe someone can recognize something similar they may have worked on before?

Does this tractor have a lift pump? Often a faulty mechanical lift pump will also allow fuel into the engine oil.

 

[thepumpguysc]

U have to go thru the front of the engine to pop the gear off.. u better time it FIRST.!!

 

[Pieter Joubert]

Could you perhaps show us some pictures and maybe someone can recognize something similar they may have worked on before?

Does this tractor have a lift pump? Often a faulty mechanical lift pump will also allow fuel into the engine oil.

From tank it goes through a water trap, to the "hand pump" on the unit, up to a steel filter, back down into the injector pump and up to the two injectors.

 

[Pieter Joubert]

U have to go thru the front of the engine to pop the gear off.. u better time it FIRST.!!

So, no short cuts. Damn.

I made several alignment marks to line it up with when I reassemble and reinstall it.

FYI, it leaked about 4L of diesel into the sump in 24 hours.

 

[thepumpguysc]

U can remove the supply pump and pressure check it..