D6C fuel bleed

Pressure bleeding from the tank depends on leakage through the transfer pump. If the pump is in good shape it can take awhile.

Thanks Old Magnet. I'll take that as a good sign that the pump is in pretty good shape. Been working on this old D6 off and on for a while now. The last time it was cranked, I revved it up a couple of times, then she wouldn't rev up past idle. So, slowly I've been trying to find out what keeps it from speeding up like it should. It did have sludge in the primary filter. Both filters have been changed now. I took the rack setting cover plate off, and can feel the rack move. Until I get it cranked, I won't know what the oil pressure and fuel pressure look like. Thanks for you help.

There should be a primer pump somewhere on the right hand side of the engine. Use this pump to fill the filter and move fuel into the injection pump.
You should not have to bleed fuel lines from the injection pump to the injectors when changing the fuel filter.
If there is no primer pump, look for a compression release lever on the back side of the cylinder head. Pull the lever back and turn the engine with the starter, this will allow the transfer pump to fill the filter.
Or just loosen a fuel line on top of the filter housing to let the air out and fill the filter by gravity flow.
There should be a petcock somewhere on the injection pump to release air when using the primer pump.

Thanks fordhook. Unfortunately, this tractor does not have the hand priming pump.

You can put a little air pressure thru the fuel cap vent, I'd turn the regulator down though, maybe 20 - 30 psi

Is there a small sediment bowl down by the transfer pump? Sometimes those will collect a lot of dirt/rust.

On the older Cats if you fill the tank plumb full it will bleed the air out overnight.

I'd go easy on that air pressure....5 - 10 psi max unless you want a balloned fuel tank.

Thanks DPete, I have tried the air pressure bleed with an old inner tube and valve stem over the tank fill opening. But like Old Magnet said, if the transfer pump is in good shape, it would be real slow. Ed RD7, there is a sediment bowl on the transfer pump, and it had a good 3/4" of gunk in the bottom of it. 8C 361 thanks for the tip. Won't get a chance to work on it till next week. Anybody have any idea why this tractor stopped revving up. Last time running, it would only idle. That is why I am flushing tank and lines,etc.
Thanks again everyone