3-1. GENERAL LUBRICATION INSTRUCTIONS. The 125GPM pump and engine assembly is the only
equipment the requires lubrication in the FAWPSS. The pump uses prelubricated, sealed ball bearings that
require no lubrication. Lubricate engine in accordance with current lubrication order L0 5-2805-257-12 or
TM 5-2805-257-14 for Model WPSS100 and in accordance with TM 5-4320-309-14 for Model 9095-91.
a. This section provides information useful in diagnosing and correcting unsatisfactory operation or failure of
the FAWPSS. Each malfunction is followed by a list of probable causes and actions to take to remedy the
malfunction. You should perform the tests/inspections and corrective actions in the order listed.
b. This manual cannot list all malfunctions that may occur; nor all tests and corrective actions. Should a
failure occur with the engine assembly on Model WPSS100, refer to TM 5-2805-257-14 and to
TM 5-4320-208-12&P for the pump assembly. On Model 9095-91, refer to TM 5-4320-309-14 for the pump and
Table 3-1. Operator Troubleshooting
TEST OR INSPECTION
1. PUMP [125 GPM] FAILS TO PUMP TO RATED CAPACITY.
Step 1. Inspect low engine speed.
Adjust engine speed. For Model WPSS100 refer to TM 5-4320-208-12&P and for Model 9095-91
refer to TM 5-4320-309-14.
Step 2. Inspect pump for sufficient prime.
Reprime pump. For Model WPSS100 refer to TM 5-4320-208-12&P and for Model 9095-91 refer
to TM 5-4320-309-14.