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TM 9-2330-272-14
2-23. FUEL SERVICING (M131A4C AND M131A5C) (Con’t).
c. Pressure Discharge Through 225 gpm (852 Ipm) System.
WARNING
• DO NOT smoke while loading or unloading fuel, when handling fuel containers, or
when located within 50 ft (15.3 m) of fueling or fuel storage ares. Failure to follow this
warning may cause a fire and explosion, resulting in serious injury or death to
personnel.
• To prevent fuel overflowing, compartment 2 on M131 A4C and compartment 1 on
M131A5C must be emptied first. Failure to follow this warning may result in serious
injury to personnel and damage to equipment.
NOTE
• Product is metered and filtered when using this fuel servicing method.
• Refer to appropriate flow diagram at end of subparagraph c for assistance.
(1) Shut down towing vehicle engine and set brakes. Refer to towing vehicle technical manual.
(2) Remove fire extinguishers from mounting brackets and take to point of operation.
WARNING
Connect bonding and grounding connections before beginning any fuel handling
operation. Maintain bonding and grounding connections until after all fuel handling is
completed. Connections must be made to clean, unpainted surfaces. An unbended
and ungrounded or improperly bonded and grounded semitrailer could produce a
spark. The resulting explosion will cause serious injury or death to personnel.
(3) Connect bonding and grounding connections (para 2-13).
(4) Ensure that all manually operated valves (3, 4,8, 11, 12, 23, and 24) are closed. Ensure that 3-way
flow valve (20) is set in position 1 with operating lever pushed inward as far as possible.
(5) Ensure that counter of meter (5) is set on zero.
(6) If equipped with read-out flow selector dial, set selector knob at zero. Close flow selector valve
(0-55 gpm) (7).
WARNING
Use extreme caution when working or walking on top of semitrailer. Catwalk can
become slippery due to moisture or fuel spillage. Failure to follow this warning may
result in serious injury to personnel.
(7) Have assistant open manhole fill cover of compartment (13, 14, 21, or 22) to be emptied (para 2-14).
(8) Open emergency relief valve of compartment (13, 14, 21, or 22) to be emptied by pulling outward on
operating control lever.
(9) Open manifold (12) valve of compartment (13, 14, 21, or 22) to be emptied.
(10) Set 3-way flow valve (20) in position 2 with operating lever pulled outward as far as possible.
(11) Open pump cutoff valve (24) and 225 gpm (852 Ipm) cutoff valve (4).
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