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 TM 55-1925-204-12
Section III. LUBRICATION INSTRUCTIONS
Instructions for lubrication of the tug and its components are
covered in chapter 3 above.
Section IV. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Table 4-2. Organizational Preventive Maintenance Checks and Services.
Q- Quarterly
Total man-hours required: 8.1
Sequence
ITEM TO BE INSPECTED
Work time
Number
PROCEDURE
(M H)
NOTE
The preventive maintenance checks and services appearing on
1.
FORCE FEED LUBRICATOR.
0.5
Check the drop feed rate of the force feed lubricator per table 4-4.
Adjust when necessary.
2.
AIR COMPRESSORS.
0.5
Inspect compressor operation, for action of valves.
See that the compressors are properly mounted and correctly aligned.
3.
MOUNTING, VIBRATION DAMPERS.
0.4
Inspect outside of engine for loose nuts, bolts, and clamps.
4.
COMPRESSION.
0.8
Test cylinder compression, with engine at idle speed, and at operating
temperature.
5.
EXHAUST PIPING AND MUFFLERS.
0.3
Check for carbon streaks and other indications of exhaust leaks.
Be sure drain holes in mufflers are not clogged. Tighten all mounting
bolts and connections. Check that manifold and gaskets are in good
condition and secure.
6.
AIR STARTING SYSTEM.
1.0
Check system for leaks, damaged lines or connections.
See that system operates properly to deliver adequate cranking air.
Drain dirt and water from air tanks. Inspect air valves for leakage
and satisfactory operation.
7.
REFRIGERATION UNITS.
1.0
Check for gas shortage. Test the refrigerant. Add if necessary.
Check oil in system, and lubricate in accordance with the current LO.
8.
BLOWER MOTORS.
1.0
Check for cleanliness, and for condition of commutator and brushes.
Check that all electrical connections are clean and tight.
9.
MASTER SWITCHES AND CONTROLLERS
2.0
Check the general condition, movement, and effectivity of master
switches and/or controllers.
10.
STEERING GEAR.
0.6
Check operation of the steering gear moor, hydraulic pump,
t
and rudder movement. Examine the condition of hydraulic valves
and piping of console, along with the hand hydraulic pump.
Section V. TROUBLESHOOTING
of test or inspections which will help you to determine probable
4-6. General
causes and corrective actions to take. You should perform the
a. This section contains troubleshooting information for
tests/inspections and corrective actions in the order listed.
locating and correcting most of the operating troubles which
b. This manual does not list all malfunctions
may develop in the tug and its components. Each malfunction
for an individual component, unit, or system is followed by a list
4-5
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