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BRAKE SYSTEM
6.3 MAINTENANCE, ADJUSTMENTS AND
INSPECTIONS
To maintain the efficiency of the brake system
following preventive maintenance is essential.
(a) Always use genuine grade of service replacement
lined shoes.
(b) Do not contaminate the brake lining surface with
oil or grease.
(c) The brake shoes have to be replaced in sets only.
If you are replacing brake shoes on left side then
the brake shoes on right side should also be
replaced.
After replacement of new brake lining,
- Set the brake shoe dia. to 179.5 mm.
- Assemble the drum
- In vehicle static condition, press brake pedal
30 - 40 times and ensure the pedal travel is in
acceptable condition.
(d) Increased foot pedal travel and hand brake lever
movement is an indication that automatic
adjustment mechanism has reached its stop limit.
1. MAINTENANCE OR SERVICE LIMITS :
1.1 Friction Material (Front and Rear)
Do not allow the friction material or brake liner to wear
below 1 mm from brake shoe-rim surface. (Brake liner
thickness is 4.2 to 4.8 mm)
For brakes with make Bosch
Front (mm) Rear (mm)
Brake Rim Thickness
2
1.6
Liner Thickness
4.2
4.2
For brakes with make Brakes India Ltd. (BIL)
Front (mm) Rear (mm)
Brake Rim Thickness 1.6
1.6
Liner Thickness
4.8
4.8
1.2 Tandem Master Cylinder
If, the clearance between the piston and cylinder bore
exceeds 0.20mm, TMC assembly should be replaced.
1.3 Wheel Cylinder
If, the clearance between the wheel cylinder piston
and cylinder bore exceeds 0.20 mm, Wheel cylinder
assembly should be replaced.
1.4 Seals
As per the preventive maintenance schedule, all
rubber parts (including seals) should be replaced after
40,000 kms or two year, whichever occurs earlier.
1.5 Brake Fluid
As per the preventive maintenance schedule, brake
fluid should be flushed and replaced after each 40,000
kms or two year, whichever occurs earlier.