Fuel Leak

Can,t quite figure out what your talking about when you say aux. gov. control. The regular gov. uses motor oil in it & is a common oil system with the lower part of the injection housing where the camshaft & lifters are.

I have pictures, but will post them later. Basically, there are two throttle controls on my machine. One near the air cleaner, and another on the side of the block. The one on the block is defined as the "auxiliary". It is defininately diesel that is leaking from the aux., not oil. The oil actually goes in at the bottom of the injector pump housing on mine.

Here is what I am talking about.

http://s16.photobucket.com/albums/b17/OrangeMach/?action=view¤t=100_2108.jpg

Here is what I am talking about.

http://s16.photobucket.com/albums/b17/OrangeMach/?action=view¤t=100_2108.jpg

Not uncommon to have that governor control shaft seal leak and can be a tough one to stop but the usual leakage is oil from the fuel injection pump housing which is also common to the governor housing.

If it really is fuel I can only think of two sources. One being the plug at the back of the fuel inj. pump housing at the end of the fuel supply chamber as SJ mentions. The other is past the pump lifters in the Fuel Inj. housing due to a leaking injector pump and a clogged housing drain line.

Check the oil fill level by removing the plug to the left of your picture. Normal height is level with the top. If over full (maybe with fuel) pull the side cover plate off the inject pump housing and check to see if drain is working.

If you find considerable fuel in the normal oil sump you run the risk of damage to the lifters, camshaft and bearings if you continue to operate.

Here is what has me so thrown off. It is definately leaking more than ever and now when sittting over night, it near impossible to start. I use eather to get it started and keep it running until it runs on it's own. I think it is loosing pressure from the leak which makes it hard to start.

Sounds more like the seal (probably an o-ring) on the plug in the end of the fuel gallery.

A worn leaky pump would have to be pretty badly worn for it to let air into the fuel gallery. In any case, drain the fuel injection pump housing and get some good oil in there before you damage anything.

An uncle had an old Mercedes car that leaked diesel into the injection pump cam/sump and he ran it like that for quite a while without problems, but it can't be good.

You should have a priming pump on an electric start dozer, so open a bleed on the top of the pump housing, (look behind each pump for a small bleed screw) and pump it until all the air is out, BEFORE you ever crank the engine over. You could also have leaks on the filter tower etc that allow it to leak down while it isn't running, but since it is leaking into the governor, that's probably the one that's causing all the trouble.

[quote="ccjersey"]Sounds more like the seal (probably an o-ring) on the plug in the end of the fuel gallery.

A worn leaky pump would have to be pretty badly worn for it to let air into the fuel gallery. In any case, drain the fuel injection pump housing and get some good oil in there before you damage anything.

An uncle had an old Mercedes car that leaked diesel into the injection pump cam/sump and he ran it like that for quite a while without problems, but it can't be good.

You should have a priming pump on an electric start dozer, so open a bleed on the top of the pump housing, (look behind each pump for a small bleed screw) and pump it until all the air is out, BEFORE you ever crank the engine over. You could also have leaks on the filter tower etc that allow it to leak down while it isn't running, but since it is leaking into the governor, that's probably the one that's causing all the trouble.[/quote]

Does anyone have an exploded view of all of this so I can better understand where/what is leaking?

Thanks