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4-1
2. SPECIFICATION
WHEEL BRAKE
There are two brake systems, the foot brake system and the hand brake system.
In the foot brake system, oil pressure is generated in the master cylinder by treading on the brake
pedal. This pressure causes the wheel cylinder pistons to extend, expanding the brake shoes and
pressing them against the brake drums to attain braking force.
In the hand brake system, the brake shoes are expanded by operating the brake lever.
Force from the lever is transmitted to the brake shoes through the hand brake cables and a lever
arm in each wheel brake assembly.
The wheel brake is the duo-servo type. With force applied to both the primary and secondary
shoes, this type provides a large amount of brake force.
In addition, the brake equipped with automatic adjusters which constantly adjust the clearance
between the shoe and the drum, compensation for wear due to the shoe friction and thus keeping
the clearance constant.
GROUP 1 STRUCTURE AND FUNCTION
SECTION 4 BRAKE SYSTEM
1. OUTLINE
Item
Type
Brake shoe size
Wheel cylinder bore diameter
Master cylinder diameter
Front wheel, duo-servo & auto adjustment type
310
Ý
60mm
28.57mm
19.05mm
140~145mm
8~12mm
310mm
0.7~1.3kgf
Â
m
15~20kgf
Â
m
Only use for brake fluid DOT3
Specification
Pedal adjustment
Brake drum diameter
Free height
Pedal play
Normal
Wheel cylinder installation torque
Backing plate installation torque
Brake oil
1
1)
PARKING BRAKE
Item
Type
Parking lever stroke
Parking cable stroke
Ratchet, internal expanding mechanical type
40mm
18.1mm
Specification
2)