TM 9-2330-267-14&P
2-15. OPERATION IN EXTREME COLD (Con’t).
(2) Loosen two L-bolts (8) on immersion heater (9) and slide heater bracket (5) between flat metal
surfaces (10) located on immersion heater.
(3) Tighten two L-bolts (8) and ensure that heater bracket (5) and immersion heater (9) are secure.
(4) Open manhole cover (12) (para 2-13). Position immersion heater (9) in manhole opening with heater
bracket (5) opposite manhole cover. Tilt forward until heater bracket reaches lower lip of manhole rim. -
(5) Tilt immersion heater (9) back, and engage fasteners (11) on heater bracket (5).
2-16. OPERATION IN EXTREME HEAT.
a. Refer to Chapter 3, Section I for proper lubrication during extreme heat conditions. Adequate lubrication is
essential. Extreme heat will cause oil films to dissipate.
b. Keep tires covered from direct sunlight to prevent increased air pressure and deterioration of rubber.
2-17. OPERATIONS IN HIGH HUMIDITY AND SALTWATER AREAS.
a. Moist and salty areas can destroy the rust preventative qualities of oils and greases. When equipment is
active, exposed surfaces should be cleaned and lubricated daily. Refer to Chapter 3, Section I for proper lubrication
in high humidity and saltwater areas.
b. When equipment is inactive, unpainted parts should be coated with lubricating oil (Item 14, Appendix E).
All covers and caps should be in place.
2-18. OPERATION IN MUD AND SNOW.
a. Immediately after operation in mud or snow, thoroughly clean, inspect, and lubricate if tactical situation
permits. Refer to Chapter 3, Section I for proper lubrication instructions.
b. Pack wheel bearings as required (Chapter 3, Section I).
c. Refer to FM 21-305 for special instructions on driving hazards in snow. Reduce air pressure to 25 psi
(172 kPa).
TA506983
2-20
