HYDRAULIC BRAKE SYSTEM (M101A2, M101A3, M116A2,M116A2E1, AND M116A3) (CONTINUED)

TM 9-2330-202-14&P

1-16.

HYDRAULIC BRAKE SYSTEM (M101A2, M101A3, M116A2,

M116A2E1, AND M116A3) (CONTINUED).

Breakaway Lever. The breakaway lever is activated by the breakaway chain and controls the master

cylinder. When the breakaway lever is up, the brakes are applied. When the breakaway lever is

down, the drawbar coupler movement controls the master cylinder.

Leaf Spring. The leaf spring holds the breakaway lever up The breakaway lever must be reset any

time it has been pulled up.

Hydraulic Brake Tube Assemblies and Hose Assembly. These components transfer hydraulic pres-

sure from the master cylinder to the wheel cylinders.

Wheel Cylinders. One wheel cylinder is located at each wheel. The wheel cylinder changes hydraulic

pressure into mechanical motion. When the wheel cylinder is pressurized, it pushes the primary and

secondary brakeshoes against the brakedrum.

Primary Brakeshoe. The primary brakeshoe is pushed against the brakedrum by the wheel cylinder.

The brakedrum pushes the primary brakeshoe down and into the secondary brakeshoe.

10.

Secondary Brakeshoe. The secondary brakeshoe provides braking action. It is pushed into the

brakedrum by the primary brakeshoe.

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