TM-9-2330-356-14
SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1990
TM-9-2330-356-14 - Page 43 of 528
TM 9-2330-356-14
CHAPTER 2
OPERATING INSTRUCTIONS
Section I. OPERATING PROCEDURES
WARNING
If incorrectly used, this equipment can cause
severe injury or death. Those who use and
maintain the equipment should be trained in
its proper use, should be warned of its
dangers, and should read the entire manual
before attempting to set up, operate, adjust,
or service the equipment.
2-1.
General
This section provides operator/crew instructions for
operation and proper use of the M967, M967A1, M969,
M969A1, M970, and M970A1 semitrailers. Operations
common to all six models are described first, followed by
those operations which pertain to a particular model.
2-2.
•
•
Before-Operation Service
WARNING
Frequent inspection of equipment, safety
devices, and working areas must be per-
formed to ensure personal and operational
safety and to correct potential or actual
hazards.
The semitrailer must not be operated if any
of the following conditions exist:
a. Fuel leaks.
b. Damage to lighting fixtures, wiring or
electrical conduits, or lights inoperative.
c. Damage to towing vehicle or semi-
trailer.
d. Primary or parking brake systems in-
operative.
e. Vents plugged, inoperative, or re-
moved. Pressure, vacuum, and fusible
vents are installed to meet code require-
ments and to protect the semitrailer from
damage. A plugged or inoperative vent can
cause extensive shell damage if design
pressure or vacuum is exceeded. The fus-
ible vents are designed to operate at high
temperatures. If these vents are coated
with paint, dirt, or other foreign material,
the temperature when relief occurs may be
greatly increased.
a.
This is a brief service to make sure that the semi-
trailer is ready for operation, and that conditions affecting
the semitrailer’s readiness have not changed since the
previous after-operation service. The before-operation
services specified in table 3-1, Operator/Crew Preventive
Maintenance Checks and Services, Chapter 3, must be
performed before using the semitrailers.
b.
You must follow approved practices and
precautions. A detailed study of Section III, Operation
Under Unusual Conditions, is essential for use of this
material under unusual conditions.
2-3.
Coupling Semitrailer to Towing Vehicle
(Figs. 2-1 through 2-3)
a.
Back the towing vehicle slowly to the front of the
semitrailer. Maneuver the towing vehicle so that the
kingpin on the semitrailer is in line with the fifth wheel
jaws on the towing vehicle. Before the upper coupler
(kingpin) plate of the semitrailer starts to ride on the fifth
wheel of the towing vehicle, stop the towing vehicle. Make
sure the kingpin and the fifth wheel are properly alined.
Do not ram tractor into semitrailer pick-up plate. You may
need to raise or lower the landing legs to aline the level of
the semitrailer kingpin plate with the tractor fifth wheel.
Back towing vehicle under upper coupler (kingpin) plate
until the kingpin and fifth wheel hook automatically.
Make sure the kingpin and fifth wheel are engaged and
locked.
b.
Remove dummy couplings from the service air
couplings and emergency air couplings (fig. 2-1). Couple
the towing vehicle air line marked SERVICE and the air
line marked EMERGENCY to the semitrailer coupling
bearing a like tag.
2-1
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