CRANE - ROTATE GEAR MOTOR, BRAKE AND TRANSMISSION

TM 5-5420-279-23

CRANE - ROTATE GEAR MOTOR, BRAKE AND TRANSMISSION

This task covers:

a. Remove

b. Install

INITIAL SETUP:

Tools Required

Tool Kit, General Mechanic's, Automotive (GMTK)

Shop Set Contact Maintenance Truck HMMWV

Materials Required

Thread locking compound, loctite 243

Lock washers (Qty 4)

O-ring (Qty 1)

Equipment Conditions

Slide frame deployed

WARNING

SLIP AND FALL INJURY. PERSONNEL MAY SLIP ON SPILLED HYDRAULIC

FLUID. SUITABLE CONTAINERS AND FLUID ABSORBENT MATERIALS ARE TO

BE USED TO CONTAIN SPILLAGE.

Remove

(1)

De-pressurize the hydraulic system. See unit maintenance procedure 5-118.

(2)

Drain the brake assembly (5). See operator's maintenance TM 5-5420-279-10.

(3)

Note the position of and disconnect the hydraulic pipes connected to the hydraulic motor

(1).

(4)

Remove the four bolts (2) and lock washers (3) securing the motor (1) to the brake

assembly (5).

(5)

Note the orientation of and remove the motor (1).

(6)

Remove and discard the o-ring (4).

(7)

Note the position of and remove the hydraulic pipes connected to the rear of the brake

assembly (5).

(8)

Remove the eight bolts (6) securing the brake assembly (5) to the transmission (8).

(9)

Note the orientation of and remove the brake assembly (5).

(10)

Remove the twelve bolts (7) securing the transmission (8) to the crane column.

(11)

Note the orientation of and remove the transmission (8), place on a suitable working

surface.