Automobile brake system : Removing and Replacing foot Pedal unit

The efficient running of the control system of the hydraulic brakes depends, largely, on the fitting of the bushings and joints on the pedals, for which reason it is important to check these elements in any general repairing of the brakes.

 

 

 

Method of Execution

METHOD OF EXECUTION

 

1st step

 Remove the pedals thus:-

 

 

Remove the pedals

<!         a) Remove the return spring from the pedal using a pliers

b) Remove the rods that operate the master cylinder, taking out the cotter pins and bolts.

c) Take off the lock from the clevis pin of the pedals, and remove the pin, using a bronze drift punch.

d) Remove the pedals.

 

SAFETY MEASURE:

BEWARE OF THE END OF THE SPRING INJURING 'YOUR HANDS.

 

NOTE:

When the lock is removed make sure that it does not spring off

 

2nd step

Clean the disassembled parts.

 

3rd step

Check the disassembled parts thus:-

 

a) Measure the bushings and bolts with a vernier caliper to determine the extent of wear so as to make the necessary re[1]placements.

b) Check the springs, bolts and operating rods.

 

4th step

 Replace the pedals thus:-

a) Position the pedals.

b) Replace the clevis pin of the pedals.

c) Replace the lock of the clevis pin of the pedals.

d) Replace the operating rods of the master cylinder.

e) Replace the return springs of the pedals

 

5th step

Lubricate the joints, while moving the pedals to check their  travel.

 

6th step 

 Adjust the play in the brake pedal, thus:-

Adjust the play in the brake pedal

 

a)Loosen the lock nut from the adjuster of the rod of the master cylinder,

b)Lengthen or shorten the adjusters depending on the play in the pedal.

 Tighten the lock nut

c)Tighten the lock nut on the adjuster of the rod.