TM 55-1945-205-24-2
0331 00 1
0331 00
UNIT LEVEL MAINTENANCE
ROLL-ON/ROLL-OFF DISCHARGE FACILITY
RIGID HULL INFLATABLE BOAT TRIM TAB
ADJUSTMENT
INITIAL SETUP:
Tools
Tool Kit, General Mechanic’s (Rail and Marine) (Item 82, WP 0359 00)
Gloves, Men’s and Women’s (Leather Palm) (Item 27, WP 0359 00)
Goggles, Sun, Wind, and (Safety) (Item 29, WP 0359 00)
Helmet, Safety (Brown) (Item 33, WP 0359 00)
Life Preserver, Vest (Item 38, WP 0359 00)
Wrench, Torque (150-750 in. lbs) (Item 91, WP 0359 00)
Personnel Required
Engineer 88L
Equipment Condition
RHIB Dry-Docked.
RHIB Battery Negative Lead Terminal Removed. (WP 0336 00)
ADJUST RHIB TRIM TAB
WARNING
All personnel must wear personal flotation device, hard hat, safety shoes and gloves
during RRDF operations and maintenance. Failure to observe these precautions
could result in serious injury or death.
Beware of other craft or objects coming alongside while working outboard as
serious injury may result if body parts are crushed between boat and other
craft or objects.
Improper trim tab adjustment can cause difficult steering, resulting in loss of control
and damage to equipment and/or injury to personnel.
NOTE
A propeller will generate steering torque when the propeller shaft is not running parallel to
the water’s surface. The trim tab is adjustable to compensate for this steering torque.
A single trim tab adjustment will relieve steering effort under only one set of speed, motor
angle and load conditions. No single adjustment can relieve steering effort under all
speeds, motor angle and load conditions.
1.
Loosen trim tab screw (1).
