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 82 of 528
TM 9-2330-356-14
Figure 2-36. Attaching Fuel Sampling Hose to Nozzle
(M970 and M970A1).
(4) When enough fuel is collected, unscrew fuel
sampling coupling from the adapter. Install cap on adapter
and put fuel sampling coupling in tool box.
b.
Aircraft Single Point Underwing Fuel Dispensing
Operation.
This operation is used to dispense metered fuel
from semitrailer to an aircraft through an underwing
connection. Fuel is pumped through the filter/separator, a
meter, and a hose reel to the aircraft (fig. 2-37). Operation
is as follows:
(1) Review instructions in paragraph 2-8.
WARNING
Hose reel cabinet door Is heavy-use two
hands when opening and closing. Use
latches to lock door. Do not slam.
(2) Open hose reel cabinet door. Pull release
cable and’ lift door with both hands.
(3) Ensure that all valves are closed.
(4) Unreel the static reel cable and
first to grounding stud and then to aircraft.
connect it
(5) Remove fire extinguishers and take to point
of operation.
(6) Start engine (para 2-10) and when warm
adjust engine speed to 1000-1200 rpm.
(7) Open valves A (para 2-11f), H, M, and R.
Reset the meter to zero by pushing the meter reset knob
(fig. 2-15) and turning clockwise.
(8) Adjust engine throttle for desired flow rate
(table 2-2).
NOTE
The breakaway fitting Is a safety feature on
hose reel for 2½-inch hose. It consists of a
breakaway coupling
installed between
2½-inch hose and outlet port of the hose reel.
Should aircraft be moved with single point
nozzle attached to wing, the coupling will
break apart as hose Is pulled tight against the
coupling, preventing damage to the aircraft.
For reassembly of breakaway fitting refer to
paragraph 3-13.
(9) Release lock (para 2-11) on the 2½-inch hose
reel. Unreel all 50-feet of 2½-inch hose to ensure that
breakaway feature will be operable.
WARNING
Bonding of the semitrailer to aircraft and
grounding procedures per paragraph 2-8b
while
refueling
shall
be mandatory,
regardless of the amount of fuel to be
dispensed, due to the dangers of static
electricity. Bond the fuel nozzle ground wire
to the aircraft before bringing nozzle in
contact with the aircraft.
(10) Attach single point nozzle (fig. 2-34) ground
wire to aircraft. Connect single point nozzle to adapter on
aircraft. Open nozzle by turning lever on side of nozzle.
(11) Unreel deadman control hose and activate
deadman control S by depressing control lever. Meter
inlet gage (fig. 2-15) should indicate a minimum of 25 psi.
Should gage not indicate a minimum of 25 psi, shut down
operation and contact unit maintenance.
(12) Release deadman control S at end of
operation,
and
adjust
engine to
idle
speed
(1000-1200 rpm). Rewind the deadman control hose.
(13) Close single point nozzle. First disconnect
single point nozzle from aircraft, then disconnect the
nozzle ground wire.
(14) Evacuate hose (para 2-14d).
(15) Rewind the 2½-inch hose (para 2-11).
Tighten hose reel lock.
(16) Close all valves and shut off engine
(para 2-10d).
2-40
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