A-6
Portable Filter Pump Fails to Pump Oil?
Filter Pump
fails to pump oil.
Does
your filter have a
heater?
Turn heater "ON"
and run heater
for 15 minutes.
Insert flexible oil return
hose into the filter pan
holster. Turn pump
motor "ON".
Does oil
flow?
Conduct normal
filter operations.
Disconnect flexible oil
return hose. Make sure it
is cool before handling.
Try blowing air through it.
Can you
blow air through
it?
Submerge hose into hot water (over
120°F/49°C). Keep both ends out
of the water. If water gets into the
hose, the water will cause severe
splattering when hose is
reconnected to the filter.
Once shortening has
softened, reconnect
the flexible oil return
hose to the filter.
Insert flexible oil return
hose into the filter pan
holster. Turn pump
motor "ON".
Does oil
flow?
Blockage is between
the bottom of the filter
pan and the flex hose
valve. Go to page A-8.
Yes
No
Yes
No
No
Yes
Yes
No
