TM 10-4320-303-13
Table 2-7. Operator Preventive Maintenance Checks and Services for TWDS. (Continued)
Location
Item
No.
Interval
Item to Check/Service
Procedure
Not Fully
Mission Capable
if:
BOOST PUMPING
STATION-CONT
12
Before
Hose Assemblies
Inspect for damage, leaks,
Class III three
and loose connections.
leaks.
Tighten loose connections.
If hose is damaged or Class
III leaks are present, notify
supervisor.
13
Before
Check Valve
Ensure check valve is
Check valve is
installed properly. Arrow on
not installed
body casing must point in
properly.
direction of water flow.
Connection is
Inspect for leakage and loose
loose. Class
connections. Tighten loose
III leaks.
connections.
14
Before
Pressure Relief
Inspect valve for presence of
Dirty pressure
Valve
grit, sand, or dirt. If
relief valve.
dirty, clean using soft
Pressure relief
brush. Inspect for damage or
valve damaged.
leaks.
Class III leak.
If discharge
port is
obstructed.
STORAGE ASSEMBLY
15
Before
4 Inch Gate Valve
Inspect for damage and
4 inch gate
improper operation. Check to
valve is damaged
be sure valve turns freely.
or does not turn
Check for leaks.
freely. Class
III leak.
16
Before
4 Inch x 10 Foot
Inspect for damage, leaks,
Hose is damaged.
Discharge Hose
and loose connections.
Class III leak.
Tighten loose connections.
Connection is
loose.
2-19
