I always change the oil on my inline Simms pump when I change engine oil on Ford 6610, it came out totally diluted with Diesel. The pump was rebuilt about 300 hours ago, is something leaking inside? The tractor runs fine, I had it rebuilt because of broken springs on the pistons.
- Thread starter David G
- Start date
Majorman
Well-known Member
- Location
- Scarning, Norfolk, England
Simms pumps are supposed to leak diesel into the governor housing, that is why Ford specifies that you change the oil every engine oil change. The oil is there to lubricate the governor mechanism not the pumping elements, those and the cam are lubricated by allowing diesel to leak past the pumping plungers. There should be a short "pigtail" pipe on the cam box to allow the diesel to leak out.
I was trained on the pump operation by Ford and spent time in a diesel shop servicing the pumps.
I was trained on the pump operation by Ford and spent time in a diesel shop servicing the pumps.
Dieseltech
Well-known Member
- Location
- Akron, Indiana
Majorman is right, early Simms inline pumps all had leakage from the plungers into the cambox, and any excess went out the drip tube. Bosch Deutz pumps used the same system. Latest Bosch and CAV/Simms inline pumps now have "ducted" plungers to prevent most of this leakage on pumps that are engine oiled.
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