Brake Pedal; Checking Pedal Height; Checking Pedal Travel - Isuzu 2000 Trooper Workshop Manual

5C–16 POWER ASSISTED BRAKE SYSTEM

Checking Pedal Height

The push rod serves as the brake pedal stopper when the
pedal is fully released. Brake pedal height adjustment
should be performed as follows:
Adjust Brake Pedal
1. Measure the brake pedal height after making sure the
pedal is fully returned by the pedal return spring.
Pedal height must be measured after starting the
engine and receiving it several times.
Pedal Free Play : 6-10 mm (0.23-0.39 in)
Pedal Free Play : 208-218 mm (8.19-8.58 in)
NOTE: Pedal free play must be measured after turning
off the engine and stepping on the brake pedal firmly five
times or more.
2. If the measured value is not within the above range,
adjust the brake pedal as follows:
a. Disconnect the stoplight switch connector.
b. Loosen the stoplight switch lock nut (1).
c. Rotate the stoplight switch so that is moves away
from the brake pedal.
d. Loosen the lock nut on the push rod.
e. Adjust the brake pedal to the specified height by
rotating the push rod in the appropriate direction.
f. Tighten the lock nut to the specified torque.
Torque: 20 N·m (15 lb ft)
g. Adjust the stoplight switch to the specified
clearance (between the switch housing and the
brake pedal) by rotating the switch housing.
Clearance : 0–0.2 mm (0–0.008 in)

Brake Pedal

NOTE: While adjusting the stoplight switch, make sure
that the threaded part of the stoplight switch does not
push the brake pedal.
h. Tighten the stoplight switch lock nut.
i. Connect the stoplight switch connector.
310RW001

Checking Pedal Travel

1. Pedal height (3) must be measured after starting the
engine and revving it several times to apply vacuum
to the vacuum booster fully.
NOTE: Pedal height (3) must be 100 mm (3.9 in) or more
when about 50 kg (110.25 lb) of stepping force is applied.
2. If the measured value is lower than the above range,
air existing in the hydraulic system is suspected.
Perform the bleeding procedure.
310RY00001
310RW001