Lesson 4/Learning Event 3
LEARNING EVENT 3:
DESCRIBE ORGANIZATIONAL
CORRECTIVE MAINTENANCE ON THE
TANK-UNIT ASSEMBLY, PERSONNEL SHOWER
UNIT ASSEMBLY, AND THE M2 WATER HEATER
The tank of the tank-unit assembly will not be repaired at the
organizational level.
All tank repairs, such as welding and valve
replacement will be referred to direct support maintenance. All repairs to
the suction and blender hoses (components of the tank-unit assembly) will
also be referred to direct support maintenance. The only component of the
tank-unit assembly that organizational maintenance personnel are authorized
to repair is the foot valve. The foot valve (figure 15) can be disassembled
at the organizational level and the valve (item 7) may be replaced if
defective. Use the following method for repairing the foot valve.
NOTE
When using this method, refer to figure 15 on page 65.
Foot Valve Repair. Disassemble the foot-valve assembly (figure 15 on page
65) by removing three nuts and bolts.
Use a 1/2-inch open-end wrench to
separate the strainer halves from the foot-valve housing. Remove the bolt,
washer, and nut that fasten the flat-washer valve reinforcement plate and
valve together. Replace the valve if necessary. Assemble the pieces of the
foot-valve assembly by positioning the valve reinforcement plate against one
side of the valve. Then place the flat washer on the opposite side of the
valve. Fasten these parts together with a bolt, washer, and nut. Tighten
the parts wrenchtight. Lay the strainer halves on the bench with the bolt
holes alined. The strainer half must be on the bottom. Lay the assembled
valve as a unit flat across the strainer half with the three bolt holes.
Aline the three bolt holes of the foot-valve housing and the two strainer
halves and fasten these parts together by using the three bolts and nuts.
Tighten the nuts wrenchtight. Inspect to see that the valve flaps open and
close when inverted.
The personnel shower unit assembly will not be repaired at the
organizational level. Components with damaged threads or couplings will be
turned in to direct support maintenance for repair or replacement.
At the organizational level, the M2 Water Heater is authorized repairs to
the control and cover panels, main electrical power cable, fuel hose, water
hose, fuel system, ignition system, and low-pressure heating boiler. Repair
procedures for each component and system are described on page 66.
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