TIAGO

BRAKES

FRONT BRAKE ASSEMBLY

Ventilated disc brakes with single pot caliper of 54

mm piston diameter are provided for front brake.

Salient features of disc brakes

Caliper assembly consists of a caliper carrier

bolted to the knuckle and the body assembly

slides on two guide rod pins used in the carrier

(guide rod ‘A’ & ‘B’). Both the sliding guide rod

pins are sealed against water and dust by boot

guide rod thereby avoiding possible unequal

sliding loads caused by dirt, corrosion. Drag of the

pads is taken directly by the carrier; consequently

the pins are loaded only by the weight of the

caliper body.

When the brake pedal is pressed, the hydraulic

pressure from Master Cylinder pushes the piston

in the caliper pot and with it the in-board pad on to

the disc. The caliper body reacts and slides on the

guide rod pins to bring the out-board pad into

contact with the disc. Thus the clamping forces on

both sides of the disc become equal.

When the hydraulic pressure is released, upon

release of the brake pedal the sealing ring fitted in

the groove of the caliper pot retracts the piston by

a small amount which allows the moving parts to

relax sufficiently for the disc pads to retract and

remain in close proximity to disc, ready for the

next brake application.

6.13.1

FRONT

BRAKE

ADJUSTMENT,

REMOVAL AND REFITMENT

REMOVAL OF CALIPER FROM CARRIER

1. Use a socket and wrench/Pneumatic nut

runner to remove the wheel from the axle. Do

opposite (or diagonal) loosening of nuts

carefully.

2. Remove Banjo bolt from inlet port.

3. Loosen and remove the Bolt- guide rod ‘A’ and

Bolt- guide rod ‘B’ from carrier and remove the

caliper from the carrier