4
Troubleshooting Your Pump
Test pressure not being reached:
Possible air in line (or vessel)
Air needs to be purged from system.
Remove pump from system and follow steps 1 thru 6 of the
“Pre-Setting Your Pump” section.
If using the Siphon Method and not getting pressure, try the
‘Pressure Feed’ or ‘Gravity Feed Method’ to ensure water is
getting into the pump.
Check strainer (H) O-Ring for cracks.
Check inlet quick disconnect (G) O-Ring for cracks
Pressure relief valve not adjusted properly.
Turn relief valve counterclockwise and watch for change in
pressure.
Pump Maintenance
Pump 50/50 antifreeze/water solution through pump after each use to
lubricate internal parts of pump and to avoid freezing in cold weather.
Check strainer O-Ring (H) for cracks prior to each use.
Check oil level through oil sight glass (F) located on front of pump
prior to each use. CAT recommends changing oil after 50 hours
of break-in operation. Change oil every 3 (three) months or after
500 hours of use. Pump requires CAT pump crankcase oil (21oz
container), Wheeler Rex PN 276254. Add oil through pump
crankcase cap (E).
Suction Hose Wheeler Rex PN 34550
Operating Instructions
Models 47100, 47101, 47102, 47103
Hydrostatic Test Pumps
CAUTION !!!
This pump is designed for water only!!
The pump is equipped with an adjustable pressure relief valve (C), which helps protect the system from being
over pressurized. It can be preset by plugging the end of the hose. Turn the adjusting knob clockwise to
increase pressure and counterclockwise to decrease.
