Range Rover Classic
BRAKES
1
REPAIR
BRAKE SYSTEM BLEED (NON ABS)
Service repair no - 70.25.02
Also.
See Brake System Bleed (ABS)
The hydraulic system comprises two completely
independent circuits. The rear calipers and lower
pistons in the front calipers form the secondary circuit,
while upper pistons in the front calipers form the
primary circuit. The following procedure covers
bleeding complete system, but it is permissible to
bleed one circuit only if disconnection is limited to that
circuit.
Bleeding will be assisted if engine is run or a vacuum
supply is connected to servo.
WARNING: If engine is running during
brake bleeding process ensure that neutral
or park is selected in main gearbox and
that park brake is applied.
When bleeding any part of secondary circuit, almost
full brake pedal travel is available. When bleeding
primary circuit only, brake pedal travel will be
restricted to approximately half.
NOTE: When bleeding system commence
with caliper furthest from master cylinder.
Finally tighten bleed screws to
10 Nm.
Bleeding
1. Fill fluid reservoir with correct grade of fluid.
See
LUBRICANTS, FLUIDS AND CAPACITIES,
Information, Recommended Lubricants and
Fluids
NOTE: Maintain correct fluid level
throughout procedure of bleeding.
2. Connect bleed hose to bleed screw on rear
caliper furthest from master cylinder.
3. Submerge free end of bleed hose in a container
of clean brake fluid.
4. Loosen bleed screw 1/2-3/4 of a turn.
5. Operate brake pedal fully and allow to return.
NOTE: Allow at least five seconds to
elapse with foot right off pedal to ensure
pistons fully return before operating pedal
again.
6. Repeat 5 until fluid clear of air bubbles appears
in container. Keeping pedal fully depressed,
tighten bleed screw.
7. Remove bleed hose, replace dust cap on bleed
screw.
8. Repeat 1 to 7 for other rear caliper.
9. Remove front wheel furthest from master
cylinder