TM 10-4930-220-13&P
Table 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS
AND SERVICES (PMCS)
Item
Item to be
Not Fully
No.
Interval
Inspected
Procedures
Mission
Capable If:
1
Quarterly
Tank
Check the tank for leaks, dents, cracks, or breaks.
Tank has leaks,
Assembly
Check for ruptures in the welded seams. Check the
cracks or breaks.
interior of the tank for dirt or contamination. Repair
Welded seams
leaks, dents or other damage. Replace a badly
are ruptured.
damaged tank. Purge and clean.
2
Quarterly
Manhole
Check all bolts and nuts for tightness. Check for dents,
Bolts and nuts
Cover
cracks or breaks. Check gaskets for wear and darnage.
are loose or missing.
Assembly
Replace defective cover gasket. Repair or replace
Cracks or breaks
defective manhole cover and filler cover.
exist. Cover gasket,
manhole cover or
filler cover are de-
fective.
3
Quarterly
Drain Valve
Check drain valve or drain plug for leaks or damage.
Control handle is
and Control
Check control handle for binding or damage. Replace
damaged. Drain
or Drain
damaged control handle. lighten or replace a leaking or valve or drain plug
Plug
damaged drain valve or drain plug.
leaks or is damaged.
4
Quarterly
Emergency
Check the emergency dump valve for leaks or damage.
Emergency dump
Dump Valve
Check the valve strainer screen for residue. Check the
valve leaks, valve
and Control
valve mounting gaskets for wear or damage. Check the
mounting gaskets or
Lever
control lever for binding or damage. Replace or repair
control lever are
damaged valve or control lever. Clear the valve strainer
damaged. Valve
and replace damaged gasket.
strainer has residue,
gasket is damaged.
5
Quarterly
Hose
Inspect hoses for leaks, breaks, cuts or worn areas and
Hoses, fitting or
Assembly
defective gaskets. Replace damaged hoses, fitting or
gaskets are
defective gasket.
damaged or defec-
tive.
6
Quarterly
Ground
Inspect cable for frayed, worn or corroded condition.
Cable is missing
Cable
Replace defective cable.
or defective.
7
Quarterly
Nozzle
Inspect the nozzle for leaks, distortion and corrosion.
Nozzle leaks or is
Assembly
Replace or repair a leaking or distorted nozzle. Clean
corroded or
corroded nozzle.
distorted.
4-3
