Land Rover Defender 90 Workshop 2nd Edition Nas Rover Manual

70BRAKES
4
REPAIR PRESSURE REDUCING VALVE (PRV)
Service repair no - 70.25.21
Remove
1.Disconnect battery.
2.Clean reducing valve parts.
3.Place a container under PRV valve to catch
escaping brake fluid.
4.Disconnect primary circuit pipe unions ñAñ
from PRV.
5.Disconnect secondary circuit pipe unions ñBñ
from PRV.
6.Cover pipes to prevent ingress of dirt.
7.Remove single retaining nut and bolt securing
PRV to engine bulkhead.
8.Remove valve.
Refit
9.Fit valve to engine bulkhead. Tighten bolt to
15
Nm, 11...

BRAKES
5
REPAIR SERVO ASSEMBLY
Service repair no - 70.50.01
Remove
Before starting repair refer to general brake service
practice.
See General Brake Service Practice
NOTE: The non-return valve and grommet,
are the only serviceable components, in
event of failure or damage, fit a new unit.
1.Remove master cylinder.See Master cylinder
2.Disconnect vacuum supply hose from servo unit.
3.At footwell, release 2 brake pedal return springs.
4.Disconnect leads from brake light switch at rear
of pedal box....

70BRAKES
6
REPAIR BRAKE PEDAL
Service repair no - 70.35.01 - Brake pedal
Service repair no - 70.35.03 - Pedal box
Remove
1.Remove brake servo assembly.
See Brake
servo assembly
2.Remove 6 bolts securing pedal box to engine
bulkhead.
3.Taking care not damage brake fluid pipes,
remove pedal box assembly and gasket.
4.Release return springs from pedal and pedal box
bosses.
5.Using a suitable punch, drift out retaining pin and
withdraw pedal pivot shaft.
6.Remove brake pedal complete with pivot
bushes....

BRAKES
7
REPAIR FRONT BRAKE PADS
Service repair no - 70.40.02
Remove
1.Remove front road wheels .
2.Clean exterior of calipers.
3.Remove split [cotter] pin from retaining pins.
4.Remove pad retaining pins and anti-rattle
springs.
5.Remove brake pads.
6.Clean exposed parts of pistons, using new brake
fluid. Wipe away excess with a lint free cloth.
7.Using piston clampLRT-70-500press each
piston back into its bore. Ensure that displaced
brake fluid does not overflow from reservoir.
Refit
8.Fit brake pads....

70BRAKES
8
REPAIR REAR BRAKE PADS
Service repair no - 70.40.03
Remove
1.Remove rear road wheels.
2.Clean exterior of calipers.
3.Remove pad retaining pins and anti-rattle
springs.
4.Remove brake pads.
5.Clean exposed parts of pistons, using new brake
fluid. Wipe away excess with a lint free cloth.
6.Using piston clampLRT-70-500press each
piston back into its bore. Ensure that displaced
brake fluid does not overflow from reservoir.
Refit
7.Insert brake pads.
8.Position pad retaining springs, fit new pins...

BRAKES
9
REPAIR FRONT BRAKE CALIPER ASSEMBLY
Key to caliper
1.Caliper
2.Bleedscrew
3.Anti-rattle springs
4.Pad retaining pins
5.Split [cotter] pin
6.Friction pads7.Piston
8.Wiper seal retainer
9.Wiper seal
10.Fluid seal
11.Brake disc 

70BRAKES
10
REPAIR FRONT BRAKE CALIPERS
Service repair no - 70.55.05
Service repair no - 70.55.16
Before starting repair refer to general brake service
practice.
See General Brake Service Practice
Remove
1.Remove front road wheels.
2.Expose flexible brake hose by moving coiled
protective covering.
3.Using a hose clamp, clamp hose to prevent loss
of brake fluid.
4.Disconnect rigid brake pipe from flexible hose,
seal exposed ends to prevent ingress of dirt.
5.Remove split [cotter] pin, retaining pins and...

BRAKES
11
REPAIR Assemble outboard pistons
13.Coat new fluid seal with brake fluid. Ease seal
into groove in bore using only fingers, ensuring it
is properly seated. Fluid seal and groove are not
same in section, so when seal is seated it feels
raised to touch at edge furthest away from
mouth of bore.
14.Coat appropriate piston with brake fluid. Insert it
squarely into bore by hand only. Do not tilt piston
during insertion, leave approximately 8mm
projecting from bore.
15.Coat new wiper seal with brake...

70BRAKES
12
REPAIR REAR BRAKE CALIPER ASSEMBLY
Key to rear caliper
1.Caliper
2.Bleed screw
3.Pad retaining springs
4.Brake pads
5.Piston6.Wiper seal retainer
7.Wiper seal
8.Fluid seal
9.Retaining pins 

BRAKES
13
REPAIR REAR BRAKE CALIPERS
Service repair no - 70.55.06
Service repair no - 70.55.17
Before starting repair refer to General brake service
practice.
See General Brake Service Practice
Remove
1.Remove rear road wheels.
2.Using a recognised hose clamp, clamp flexible
brake hose above rear axle.
3.Remove brake pipe from rear brake caliper.
4.Seal pipe ends to prevent ingress of dirt.
5.Remove retaining pins and withdraw pads. If
same pads are to be refitted, identify them for
assembly in original...