Massey 44 Diesel

[Grabatire]

How can diesel fuel get into the crankcase on a Massey Harris 44 diesel?

 

[used red MN]

How can diesel fuel get into the crankcase on a Massey Harris 44 diesel?

Seal on the injection pump drive shaft unless it has and external drive coupler.

 

[Dieseltech]

How can diesel fuel get into the crankcase on a Massey Harris 44 diesel?

Past a worn gear pump seal is first thing I would replace, PK7910 is the AMBAC part number. Next is the lower head seal, and control unit seal.

 

[Dieseltech]

Seal on the injection pump drive shaft unless it has and external drive coupler.

There's no seal on the PSB pump dive shaft.

 

[DanielW]

Dieseltech is correct, and he's the expert on these pumps. There are a few things that it could be, but the seal on the gear pump on PSB pumps is a very, very, very common problem that causes oil to get dumped into the crankcase. See the thread in the link below for diagrams and alternative seal part numbers. I use the SKF equivalent seals myself (SKF #4231). Any Napa or industrial supply worth their salt can order the SKF seal. Or the Timken equivalent (#44258).

Die

I am getting Diesel fuel in my engine oil. Any ideas?

forums.yesterdaystractors.com

 

[Grabatire]

I removed the small gear pump from the injection pump and let it hang on the hoses. Sure enough, fuel dripped from the shaft seal. Contacted the local seal dealer. Should have a new one in a couple weeks. Has to come up from the States.

 

[used red MN]

There's no seal on the PSB pump dive shaft.

Sorry about the incorrect information. DT, Thanks for the clarification!

 

[DanielW]

I removed the small gear pump from the injection pump and let it hang on the hoses. Sure enough, fuel dripped from the shaft seal. Contacted the local seal dealer. Should have a new one in a couple weeks. Has to come up from the States.

If you happen to be anywhere near South-Central Ontario I can give you one. Last time I ordered one was for a PSB in a Massey 555 and they accidentally gave me two.

 

[DWF]

I took that gear pump off because where the hoses thread to, it cracked due to overtightning. I put an electric fuel pump on, and it works great.
DWF

 

[Dieseltech]

I took that gear pump off because where the hoses thread to, it cracked due to overtightning. I put an electric fuel pump on, and it works great.
DWF

That pump will work fine with 5/10 PSI,..

 

[DWF]

I took that gear pump off because where the hoses thread to, it cracked due to overtightning. I put an electric fuel pump on, and it works great.
DWF

The gear pump worked fine but it leaked fuel at the threads because of the crack.
DWF