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 12 of 528
TM 9-2330-356-14
WARNING
Servicing the semitrailer when connected to the towing vehicle, regardless of the nature of the repair, the following
should be done:
• The tractor engine should be shut down.
• The tractor parking brakes should be applied.
• The tractor ignition key should be removed and in the hands of the operating technician, or locked in an
area away from the vehicle.
WARNING
Before performing repairs to these semitrailers involving welding, torching, grinding, chipping, or any other operation
that would possibly create a spark, a thorough purging of all components in contact with the product or vapors is a must.
All components that cannot be cleaned must be removed from unit; all gages should be removed before purging. A meter
check for any combustion material after purging must be made before performing any work, and every 2 hours after that.
WARNING
The following steps must be followed if semitrailer is to be moved to the inside of a building:
1.
2.
3.
4.
5.
Drain tank completely and purge.
Check interior of tank with explosive meter prior to moving into building.
Use explosive meter to check tank prior to starting work each day and perform random checks during the day.
No open flames, welding, or use of heat producing devices permitted near tank during maintenance unless
tank tests safe with explosive meter.
No smoking within 50-feet of vehicle at any time.
WARNING
DO NOT climb into tank unless interior of tank has been drained and purged and an explosive meter check indicates that
it is safe to do so. Adequate forced air ventilation or self-contained breathing apparatus must be used. Person entering
tank must have an attached lifeline. An observer must be stationed at the manhole opening so that assistance maybe
summoned in the event of an emergency. Failure to follow this warning may result in serious injury or death to personnel.
WARNING
When troubleshooting an electrical malfunction or performing electrical maintenance, ALWAYS disconnect
intervehicular electrical cable from semitrailer, and negative battery cables at batteries. Failure to follow this warning
may create a spark and explosion, resulting in serious injury and death to personnel.
WARNING
Batteries produce explosive gases. Keep sparks, flame, and smoking material away. Ventilate when charging or using in
an enclosed space. The batteries contain sulfuric acid that causes severe burns. If acid contacts eyes, skin, or clothing,
flush well with water. For contact with eyes, get immediate medical attention. Do not jump start engine. Batteries must
be removed for recharging.
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