3-1. GENERAL LUBRICATION INSTRUCTIONS.
The engine assys used with the 125 and 350 GPM pumps are all that require lubrication in the WDS20K,
WDS40K, WDS300K, WDS800K and WDS1,000K water distribution systems. The pump assys use
prelubricated sealed ball bearings that require no lubrication. For lubrication of the engine assy used on the 125
GPM pump, Refer to LO 5-2308-275-14 and TM 5-2805-275-14. For lubrication of the engine assy used on the
350 GPM pump, refer to LO 5-4320-226-12.
a. This section contains troubleshooting information for locating and correcting most of the operating
troubles which may develop in water distribution systems. The troubleshooting procedures are listed in table
3-1. The table lists common malfunctions which you may find during operation or maintenance of the water
distribution systems or its components. Perform the tests/inspection and corrective actions in the order listed.
Each malfunction for an individual component, unit, or system is followed by a list of tests or inspections which
will help you determine corrective actions to take.
b. This manual cannot list all possible malfunctions that may occur, nor all tests or inspections and correc-
tive actions. If a malfunction is not listed (except where malfunction and cause are obvious) or is not corrected
by listed corrective action, notify your supervisor.
Table 3-1. Operator Troubleshooting
TEST OR INSPECTION
1. Low water pressure at output nozzles.
Check for loose water hose fittings (leaks).
Tighten loose fittings.
Check for water valve in line partially closed.
Open all valves in series with pump.
Check water pump output pressure.
Open water line at pump and check discharge water pressure
Notify higher maintenance.
2. Collapsible Tank Leaks.
Step 1. Inspect tanks for punctures or cuts.
Notify higher maintenance if disassembly is required.
Change 1 3-1