TOPIC 4. PARKING BRAKE

TM 10-3930-644-14&P

2. Tighten capscrews (5) to a torque of 14 to 16 in.

REASSEMBLY

and

DRIVE

WHEEL

lbs.

REASSEMBLY.

3. Hold capscrews (5) in position and tighten nuts

7. To test the operation of the self-adjuster, after

(6) to a torque of 29 in. Lbs.

initial installation of adjuster unit, place shifting

lever in either forward or reverse and step on

4. Check slip resistance of the slide assemblies,

brake pedal. Self-adjuster should automatically

resistance must be 250 to 300 lbs.

adjust and there should be very little play in

brake pedal.

5. After the assembly is completed, the self-

adjuster should measure 5-1/4" between hole

NOTE

centers when it is fully retracted.

If there is excessive play in brake

pedal, check pedal adjustment before

6. drive wheel brake drum assembly and drive

removing brake drum unit. Refer to

wheel;

refer

BRAKE

DRUM

UNIT

DRIVE

WHEEL

BRAKE

ADJUSTMENT, REPAIR MANUAL.

TOPIC 4. PARKING BRAKE

A. DESCRIPTION

The brake mechanism requires no lubrication except at

time of assembly. The brake actuating mechanism,

A dual shoe mechanical brake, mounted at the drive

such as the hand lever and linkage, should be lubricated

shaft, can be used as either a parking brake or as an

periodically.

emergency brake.

The brake shoes are actuated

through a cable by an adjustable, over-center type lever,

B. ADJUSTMENT

mounted on the left hand cowl panel. (See Figure 3. )

To compensate for brake lining wear, the tension on the

hand brake can be increased by adjusting the knob on

top of the hand brake lever. (See Figure 5.) The

following procedure is recommended for proper

adjustment of hand brake lever:

1. Set the hand brake lever in the fully released

position.

2. Remove the setscrew that locks the adjusting

knob in position.

3. Turn the adjusting knob-In a clockwise direction

one or two turns, then verify adjustment by

engaging the brake. Lever should pull harder to

engage brake if properly adjusted.

4. Repeat Step 3 If additional tension is required.

When satisfactorily adjusted, .turn setscrew in to

lock the adjusting knob.

Figure 5. Hand Brake Adjustment

NOTE

Refer to REPAIR MANUAL if brake

shoe adjustment is required.

2-78