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Land Rover Defender 1999 2002my Workshop Supplement Body Repair 2nd Edition Rover Manual
Land Rover Defender 1999 2002my Workshop Supplement Body Repair 2nd Edition Rover Manual
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70 - BRAKES CONTENTS Page DESCRIPTION AND OPERATION REAR BRAKE CALIPERS - FROM 02MY 2........................................................... ADJUSTMENT BRAKE SYSTEM BLEED 1..................................................................................... PARK BRAKE - ADJUST 2..................................................................................... REPAIR ECU - ABS 1........................................................................................................... SENSOR - ABS - FRONT WHEEL 2...................................................................... SENSORS - ABS - REAR WHEELS 3.................................................................... MASTER CYLINDER 4........................................................................................... SERVO ASSEMBLY 5............................................................................................ MODULATOR UNIT - ABS 6................................................................................... BRAKE CALIPER - FRONT 7................................................................................. BRAKE CALIPER - REAR 8.................................................................................... SWITCH - STOP LIGHT 9....................................................................................... FRONT BRAKE PADS - FROM 02MY 10............................................................... REAR BRAKE PADS - FROM 02MY 11.................................................................
BRAKES 1 DESCRIPTION AND OPERATION This page is intentionally left blank
70BRAKES 2 DESCRIPTION AND OPERATION REAR BRAKE CALIPERS - FROM 02MY 1.Deflector 2.Rear brake caliper 3.Rear brake pads
BRAKES 3 DESCRIPTION AND OPERATION Modifications to the rear brakes have been introduced on 110 and 130 models. This is to increase the service life of the rear brake pads in harsh environments. New rear brake calipers are introduced which allow the fitment of brake pads with a thicker friction material. The brake pads have increased leading and trailing edge chamfers which improve efficiency. Aerodynamic deflectors are located forward of the rear wheels to protect the rear calipers from the ingress of dirt, which can cause excessive pad wear. The deflectors are manufactured from moulded rubber and are flexible to prevent damage from impact. These deflectors are fitted to 90, 110 and 130 models in markets where environmental conditions cause excessive brake pad wear.
BRAKES 1 ADJUSTMENT BRAKE SYSTEM BLEED Service repair no - 70.25.02 Preparation WARNING: Before bleeding the brake system refer to general brake service practice.See this Section. general brake service practice During bleed procedure, brake fluid level must not be allowed to fall below the MIN mark. Keep reservoir topped up to the MAX mark. To bleed the hydraulic circuits, four bleed nipples are provided, one at each caliper. There are two methods by which air can be removed from the braking system:- 1.MANUAL BLEED PROCEDURE 2.PRESSURE BLEED PROCEDURE Pressure bleed procedure Purpose designed equipment for pressure filling and bleeding of hydraulic systems may be used on Land Rover vehicles. The equipment manufacturers instructions must be followed and the pressure must not exceed 4.5 bar, 65 lb/in. Manual bleed procedure Equipment required Clean glass receptacle Bleed hose Wrench Approx. 2 litres (3 pts) brake fluid Master cylinder bleed 1.Disconnect battery negative lead. 2.Depress brake pedal fully and slowly 5 times. 3.Release pedal and wait 10 seconds. 4.Repeat until firm resistance is felt at the pedal.Complete circuit bleed 1.Disconnect battery negative lead. 2.Fit bleed hose to caliper bleed screw. 3.Dip free end of bleed hose into brake fluid in bleed bottle. 4.Open bleed nipple. 5.Depress brake pedal fully several times until fluid is clear of air bubbles. 6.Keeping pedal fully depresses, tighten bleed nipple then release pedal. 7.Repeat procedure for remaining calipers. 8.Fit bleed screw protection caps. 9.Check/top-up fluid level when bleeding is complete.
70BRAKES 2 ADJUSTMENT PARK BRAKE - ADJUST Service repair no - 70.45.09 Check NOTE: The park brake should be fully operational on third notch of ratchet. 1.Raise one rear wheel clear of ground and support on axle stand. 2.Release park brake lever. 3.Tighten brake adjuster to25 Nm (18 lbf.ft)to fully expand shoes to drum. 4.Back off adjuster 1 1/2turns, check that drum is free to rotate. 5.Check operation of park brake lever to give pawl 2 notches free movement on ratchet before being fully operational on third notch of ratchet. Adjust park brake accordingly if lever travel exceeds the above tolerance. CAUTION: Cable adjustment must ONLY be used for initial setting and to compensate for cable stretch. It MUST NOT be used to take up brake shoe wear, which MUST be adjusted at brake drum. 6.Remove axle stand and wheel chock.
BRAKES 1 REPAIR ECU - ABS Service repair no - 70.65.01 Remove 1.Disconnect battery negative lead. 2.Release and remove passenger seat base. 3.Release clip securing ECU cover plate. 4.Remove ECU cover plate. 5.Disconnect 3 multiplugs from ABS ECU. 6.Disconnect 2 multiplugs from engine management ECU. 7.Release seat base carpet to gain access to ECU mounting plate Torx screws. 8.Remove 2 Torx screws securing front edge of ECU mounting plate. 9.Remove nut securing rear edge of ECU mounting plate. 10.Remove mounting plate and ECU assembly from seat base. 11.Remove 3 bolts securing ABS ECU to mounting plate. 12.Remove ABS ECU. Refit 13.Position ABS ECU to mounting plate and secure with bolts. 14.Fit mounting plate and ECU assembly to seat base. 15.Fit Torx screws and nut securing mounting plate to seat base. 16.Re-position carpet. 17.Connect multiplugs to ABS and engine management ECU’s. 18.Fit ECU cover plate to seat base and secure in position with clip. 19.Fit passenger seat base. 20.Reconnect battery negative lead.