Hi,i have had a lot of trouble with the
oil pump on my
perkins 4107,twice the
oil pressure relief valve opened and would not reset,i stripped it down and came to the conclusion that the spring was weak,so i made a spacer 3/8"long,reasembled it,fitted it and hey presto no oil pressure,removed it made a drive shaft with a 1/4"tang to fit in the end of
pump shaft,to
power it with my
power drill,set the pump in vice and at 1000 revs had oil pressure,so i now have oil pressure on the bench but no pressure in
engine,i only wish i could afford a new
engine,iam really pissed off,any ideas? Ronnie.