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B275 CAV fuel pump problems...help.
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Posted by Phil Anderson on January 19, 2004 at 08:42:18 from (207.236.234.214):
Allright, I have taken this about as far as possible for someone who couldn't even spell diesel tractor two years ago...I need help. This weekend, I was purging the fuel system on my 1961 B275 diesel (B414 Engine) to get rid
of the summer diesel that I had left in it (I know, I'm a bonehead).
It recently hit -45C with the windchill. Anyways, this weekend it was
only about -5, so I figured everything would be less frozen. Here is my problem: I followed the directions for purging the fuel
system, and I get fuel flowing through the filter to the pump. I
can't get fuel out of the LOWER purge screw on the fuel pump. The
upper purge screw is fine, I get fuel coming out using the manual
pump on the other side of the tractor. When I try to start the
tractor (after having loosened off two of the fuel line connections
to the injectors in order to finish bleeding the system), it catches,
but then seems to die of starvation... I have checked the air intake, I have defrosted all the fuel lines, I
have drained the fuel tank and refilled it with winter diesel, I have
emptied the contents of the fuel filter and refilled with fresh, I
have taken off every single (almost) line and blown it out. The fact
that I don't get fuel coming out of the lower purge screw seems to
tell me that there may be something wrong with the pump. Has anyone got any ideas, or run into this problem before? Phil,
Finch, Ontario
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