TCM FB-8 Series, Service Manual

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5. BRAKE SYSTEM
Truck model
Item
FB10-8 FB15-8
FB18-8 FB20-8
FB25-8LB FB25-8
FB25-8V FB30-8
FB30-8V FB35-8S
Type Front two wheel braking, internal expansion, hydraulic type
Pedal ratio 6.2
← ←
Master cylinder bore 19.05 mm [0.75 in.]
← ←
Wheel brake
Type Duo-servo type
← ←
Wheel cylinder bore 22.22 mm [0.875 in.] 25.4 mm [1 in.] 28.58 mm [1.125 in.]
Brake drum inner dia. 254 mm [10 in.] 279.4 mm [in.] 314 mm [12.36 in.]
Lining size 279 x 48.5 x 5 mm
[10.98 x 1.91 x 0.20 in.]
302 x 55 x 5.1 mm
[11.9 x 2.2 x 0.2 in.]
348 x 76 x 7.67 mm
[13.7 x 3.0 x 0.31 in.]
Surface area 4 x 13530 mm
2
[4 x 30 in.
2
]
4 x 16600 mm
2
[4 x 25.7 in.
2
]
4 x 26400 mm
2
[4 x 40.9 in.
2
]
Parking brake
Type Front two wheel braking, internal expansion, mechanical type
5.1 GENERAL DESCRIPTION
The brake system is a front two wheel braking, internal expansion, hydraulic type consisting of
a brake pedal, a master cylinder and wheel brakes.
5.1.1 BRAKE PEDAL
The brake pedal is installed through a bracket
to the frame as shown in Figure 5.1.
Pedal movement pushes the piston of the
master cylinder by means of the push rod, which
converts pedal effort into hydraulic pressure.
Fig. 5.1 Brake Pedal
BRAKE PEDAL
MASTER CYLINDER
5. BRAKE SYSTEM