TM 10-4320-345-13
2-10. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (Refer To Table 2-1).
Table 2-1. Operator Preventive Maintenance Checks and Services for Model TWDS20.
NOTE
If the equipment must be kept in continuous operation, do only the procedures that can be
done without disturbing operation. Make complete checks and services when the equipment
is shut down.
ITEM
INTERVAL
LOCATION
PROCEDURE
NOT FULLY MISSION
NO.
ITEM TO CHECK/
CAPABLE IF:
SERVICE
PUMPING
STATIONS
1
Before
Pipe Fitting
a. Inspect fitting for cracks, splits
Fitting cracked or split
(wye)
and broken welds.
Clamps missing or
b. Inspect for missing, loose or
damaged.
damaged couplings.
2
Before
Butterfly Valves
a. Inspect valve body for cracks
Valve stuck, cracked or
b. Inspect for missing, loose or
broken Clamps missing
damaged handwheel.
or damaged.
c. Check operation of valve. Valve
handwheel should turn freely
without sticking.
d. Inspect for missing, loose or
damaged coupling clamps.
3
Before
Suction Hoses
a. Inspect hose for cuts, tears and
Hose cut or torn.
deep abrasions.
b. Inspect for open, cracked, or
Coupling clamps cracked
broken coupling clamps.
or broken.
c. Inspect for crimped, collapsed or
flattened hose.
4
Before
600 Gpm Pump
Perform "BEFORE" PMCS in
accordance with the applicable TM.
2-11
