Clark GEX20 - Specifications

Group 23, Brake System
23-1-2 • Brake System Specifications and Descriptions SM 765, Nov ’06
Specifications
Service Brake:
Type: Wet disc brake
Fluid: Hydraulic fluid, RANDO HD32 or NUTO H32
in accordance with CLARK specification MS-68
(CLARK #2776239)
Pedal Freeplay: None
Parking Brake:
Type: Hand brake linked to service brake at each wheel.
Holding Test: Rated load on 15 % grade.
General Description
Brake pedal linkage - A mechanical system through which
the brake pedal operates the master cylinder.
Master cylinder - The pistons are activated by brake pedal
movement.
Brake lines - These lines carry the brake flow from the
master cylinder to the wheel cylinders.
Service brake assembly - The drums, shoes and wheel cyl-
inders.
Parking brake-Operates the service brake shoes via cables.
See “Parking Brake Adjustment”, in this Group for
details.
Service Brake Operation
The Service brake pedal operates a master cylinder
mounted on the front frame. The master cylinder operates
a wheel cylinder. The wheel cylinder operates a shoe lin-
ings to be contacted on drum.
Parking Brake Operation
Operate the brake by pulling the hand brake mounted on
the battery hood. The depressed pedal tensions cables
connected to a brake shoe at each brake assembly, thereby
applying the brakes.
Press the button on the front side of hand brake, then the
parking brake will be released. This handle releases the
ratchet, and a return spring returns the pedal and cable to
the off position. The ratchet also operates the parking
brake interlock switch and the parking brake indicator
light switch.
Service Requirements
Operational checks and inspection of linkage, brake lin-
ing, and brake lines are specified in the Periodic Service
Chart in Group PS.
Service brake linkage adjustment and lube are not nor-
mally required.
Brakes are self-adjusting and normally require no adjust-
ment.
A leaking master cylinder should be overhauled or
replaced.