C6, TM 9-2350-230-12
TABLE 2-4. AMPHIBIOUS OPERATION - CONTINUED
STEP
PROCEDURE
REFERENCE
PREPARING VEHICLE FOR AMPHIBIOUS OPERATION - Continued
4
Turn vehicle MASTER SWITCH and BILGE PUMP switches on; listen
2-10 and
and make certain bilge pumps are operating properly. Turn BILGE
PUMP switches off and start engine.
ENTERING WATER
5
Push water steer lever forward to WATER position
6
Place transmission shift lever in 1st (low) position
WATER ENTRY CAUTIONS
CAUTION:
1. Select a gradual sloping bank of firm ground that is
free of rocks, stumps, or debris to enter water. Avoid drop offs into
water, soft ground or steep grades where vehicle may lose traction
and mire down or skid.
2. Leave vehicle hatch covers open during water entry
and operation if situation permits.
3. 10 mph is maximum safe water entry speed from
slopes up to 15% (1.5 ft. drop in 10 feet).
4. 5 mph is maximum entry speed on slopes of 15 to 30%.
5. The vehicle should be eased into the water slowly
from slopes of over 30%. The vehicle front will become buoyant
before entry is completed.
6. Avoid steep entry slopes if at all possible. High
speed entries from steep slopes not only can cause failure of flotation
components, but also endanger the vehicle's personnel.
NOTE. Entry technique must be controlled by good driver judge-
ment. This can result only from adequate training and experience.
7
Immediately upon entering water, turn BILGE PUMP switches on and shift 2-10 and
to 3rd range for maximum performance
WARNING: During water entry and vehicle swimming, if a solid
2-12/F, G
stream of water continues to emit from bilge pump outlets, the vehicle
should be beached immediately and the cause of leakage determined.
8
When turning vehicle, return steer bar to center position before turn is
completed, allowing momentum of vehicle to complete turn. To obtain
maximum turning response, decelerate, turn steering bar,
then accelerate.
NOTE. Propulsion and steering are same on water and land.
CAUTION:
1. If engine becomes inoperative during amphibious
operation, the crew should prepare to evacuate vehicle.
2. If it becomes necessary to tow vehicle while in water,
towing speed should not exceed 5 mph.
2-16
