Stripping Down and Cleaning 1) The pump should be given a clean every so often. Grit can
accumulate inside the pump wheel which will reduce its capacity.
2) The
pump body should have its oil feed disconnected and the three fixing screws
undone. The pump then should pull off. if any silicone has been used then it
may need pulling a bit harder but do not force it as the worm teeth are
delicate. Clean all oil ways and blow out the dirt. Keep the brass plate
removed for now.
3) When you reassemble the pump to the engine, make sure that there is no
silicone anywhere near the hole that supplies oil to the engine. Silicone is
not required and a paper gasket should do the job properly but do check the
alignment of the oil supply hole. When you push the pump onto the engine do
not force it, you may need to rotate the engine or pump gear to find a happy
meeting point.
4) Insert the three screws but do not tighten yet (because one of the
screws may foul an engine nut so you may need to pull the pump away from the
engine to tighten this screw). Connect the oil supply and turn on the tap.
You should see the chamber begin to fill with oil. Turn off the tap.
5) Re-assemble the pump innards and tighten the six screws that hold down
the brass plate. Now tighten the three screws that hold the pump to the
engine. Do not over tighten them.
6) If you haven't used the Enfield for years or have just rebuilt the
engine then it is good to give a few handfuls of the manual oil pump to get
some oil in the sump. There must be oil in the sump as this splashes around
and oils the bore. |