Dean D50 Installation, Operation & Maintenance Manual page 22

6.5.1 Filter Pump Fails to Pump Oil?
If filter unit has a
heater, turn heater
ON and allow to
heat for 20
Disconnect flexible oil return
hose. Make sure it is cool before
handling. Try blowing air through
Can you blow
air through it?
Insert flexible oil
return hose into
filter pan and turn
pump motor ON.
Does oil flow through oil
return hose?
Proceed with normal
operations.
Filter
pump
fails to
pump
oil.
minutes.
the hose.
No
Yes
No
Yes
Submerge hose in very hot water,
keeping the water out of the hose.
Water in the hose will cause severe
splattering when ho oil is run
through the hose.
Once shortening has had time
to soften, reconnect hose to
filter pump.
Insert hose nozzle
into pan holster,
and turn pump
ON.
Blockage is between bottom of the filter
pan and the flexible hose quick
disconnect. Go to Section 6.5.4.
21