Technical Information-Bleed Hydraulic System, Master Cylinder, Clutch BLEED HYDRAULIC SYSTEM
CLUTCH PEDAL
Service repair no - 33.15.01
Service repair no - 33.33.02
Proceedure
Remove
NOTE: During bleed proceedure, keep fluid reservoir topped up to avoid introducing air to system. For hydraulic fluid recommendations See LUBRICANTS, FLUIDS AND CAPACITIES, Information, Recommended lubricants and fluids. 1. 2. 3. 4.
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Attach suitable tubing to slave cylinder bleed screw. Place free end of tube in a glass jar containing clutch fluid. Loosen bleed screw. Pump clutch pedal, pausing at end of each stroke, until fluid from tubing is free of air.
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1. Remove pedal bracket assembly and master cylinder See Master cylinder. 2. Release return spring from clutch pedal. 3. Using a suitable punch, drift out securing pin and withdraw pedal pivot shaft. 4. Withdraw clutch pedal, complete with trunnion and bush. 5. If necessary remove pivot bushes. 6. Examine components for wear and damage, renew as necessary.
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NOTE: Keep free end of tube below surface of fluid. NOTE: If new pedal pivot bushes are required they must be reamed to 16mm (0.625 in).
5. Hold clutch pedal down, tighten bleed screw. 6. Top up fluid reservoir.
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Refit
MASTER CYLINDER
Service repair no - 33.20.01/03
NOTE: All hose and pipe connections and joints should be tightened to 15 Nm (11lbf/ft). Remove
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1. Drain hydraulic Fluid from System. 2. Disconnect fluid pipe at master cylinder. Pltug master cylinder fluid port and seal end of hydraulic pipe to prevent ingress of dirt. 9 3. On RH drive vehicles, unclip air cleaner retaining straps, disconnect bottom hose, and move assembly aside. 8 4. From inside vehicle, remove fibre board closing panel above pedals. 6 5. Remove 6 bolts securing pedal bracket to bulkhead. 5 6. Remove screw securing speedometer cable retaining bracket to top of pedal bracket. 7. Move pipework and cables aside and lift out pedal bracket, complete with master cylinder, turn through 90Ëš to ensure pedal clears aperture in bulkhead. 8. Remove 6 screws and detach pedal box top cover and gasket. 9. Remove nut and washer securing master cylinder push rod to clutch pedal trunnion. 10. Remove 2 nuts and bolts and withdraw master cylinder from pedal bracket.
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7. If removed, fit trunnion bush and trunnion to clutch pedal. Lubricate components with general purpose grease on assembly. 8. Fit pedal to bracket, insert pivot shaft and secure with new pin. 9. Fit pedal return spring. 10. Fit master cylinder and pedal bracket assembly See Master cylinder. 11. Adjust clutch pedal and master cylinder setting See Adjustment, Clutch pedal and master cylinder setting.
CLUTCH PEDAL AND MASTER CYLINDER SETTING 1. Remove 6 screws and detach pedal box top cover and gasket. 2. Slacken both locknuts on master cylinder push-rod. 3. Check distance from lower edge of clutch pedal to floor. Correct measurement is 140mm (5.50 in) without floor mat. 4. Adjust pedal stop as necessary to obtain correct setting. 5. Adjust master cylinder push rod to obtain approximately 1,5mm (1/16 in) free play between push-rod and master cylinder piston. 6. Tighten push-rod locknuts.
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1.5mm 1/16in
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Refit 11. Fit master cylinder to pedal bracket, engaging cylinder push rod through pedal trunnion. 12. Secure push rod to pedal trunnion. 13. Apply sealant to mating surfaces and fit pedal bracket to engine bulkhead. 14. Connect fluid pipe to master cylinder. 15. Bleed clutch hydraulic system See Bleed hydraulic system. 16. Check and adjust clutch peadl and master cylinder setting See Adjustment, Clutch pedal and master cylinder setting. 17. Fit top cover and gasket to pedal bracket. 18. On RH drive vehicles, refit air cleaner.
Land Rover recommends flushing brake and clutch fluid every two years. Castrol Synthetic Brake Fluid 32oz. LMA32 $ 14.95
140mm 5.50in
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