OPERATION IN DUSTY OR SANDY AREAS

TM 10-3930-638-10

lubricated. Keep all wiring and connections clean and

2-13. OPERATION IN DUSTY OR SANDY

free from corrosion.

AREAS

a. General. Sand and dust are abrasive and can cause

2-15. OPERATION AT HIGH ALTITUDES

wear on many parts of the vehicle. Airborne sand and

dust can clog the radiator and air cleaner.

Keep a constant watch on coolant level. Add coolant if

necessary. Keep close watch on engine instruments during

b. Cooling System. Be sure you check the radiator

operation.

frequently and keep air passages open.

NOTE

c. Air Cleaner. Reduce service intervals for the air

cleaner and clean the air cleaner as often as necessary.

Engine will operate at less than peak

performance at high altitudes.

d. Lubrication. Lubricate the vehicle at more frequent

intervals. Clean all fittings and lubrication openings

thoroughly before lubricating to prevent entry of dust or

2-16. OPERATION IN SNOW

sand with the lubricant. Take care to prevent contamina-

tion of lubricants with dust or sand.

Keep fuel tank full and snow and ice away from fuel

filler when servicing the vehicle. Clean snow from

e. Tire Pressure. When operating the vehicle on soft

operating controls and indicators and from operator's

sand at slow speeds (not exceeding 10 MPH), the tire

seat.

inflation pressure may be decreased to 30 PSI for

improved traction.

CAUTION

2-17. FORDING

When operating in excess of 10 MPH or on

The vehicle may safely be subjected to depths up to

hard surface terrain or roads, the standard

20-inches. Observe the following when fording any body

inflation pressure of 45 PSI must be

of water:

maintained.

a. Before Fording. Check depth of the water, allowing

f. At Halt. When the vehicle is not in use, cover the

for the consistency of the bottom. Don't attempt to ford

operator's compartment, and utilize what ever means are

even the narrowest stream more than 20-inches deep.

available to protect the engine compartment from the

Make sure the engine is operating at full efficiency

entry of windblown dust or sand.

before fording.

g. Mast Assembly. Periodically check inner channel of

b. During Fording. Shift the transmission in the low-

inner mast and bottom two rollers on carriage bearing

speed range and speed up the engine to minimize the

plate (part of side shifter frame) for build-up of dust,

danger of stalling. Enter the water slowly to minimize

dirt, or sand. Use wire brush to remove dust, dirt, or

surges of backwash into the engine compartment. Speed

sand build-up.

must not exceed three to four MPH. If stalling or

complete submersion occurs, notify organizational

2-14. OPERATION IN SALT WATER AREAS

maintenance.

c. After Fording. Lubricate the vehicle completely, as

Keep vehicle as clean as possible; after use, wash with

soon as possible after fording.

fresh water. Keep all lubrication points clean and well

2-22