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GENERAL FITTING INSTRUCTIONS 6. Grease outside diameter of seal, place square if possible a 'bell piece' 1. Before removing any brake or power steering to ensure that seal is not tilted. (In some hose, clean end fittings and area surrounding cases it may be preferable to fit seal to them as thoroughly as possible. housing before fitting to shaft.) Never let 2. Obtain appropriate blanking caps before weight of unsupported shaft rest in seal. detaching hose end fittings, so that ports can be immediately covered to exclude dirt. 3. Clean hose externally and blow through with airline, Examine carefully for cracks, separation of plies, security of end fittings and Reject any hose found faulty. 4. When refitting hose, ensure that no unnecessary bends are introduced, and that or during tightening of union nuts. 5. Containers for hydraulic fluid must be kept absolutely clean. 6. Do not store hydraulic fluid in an unsealed It will absorb water, and fluid in this condition would be dangerous to use due to a lowering of its boiling point. 7. Do not allow hydraulic fluid to be 7. If correct service tool is not available, use a contaminated with mineral oil, or use a suitable drift approximately 0,4 mm smaller container which has previously contained than outside diameter of seal. Use a hammer mineral oil. VERY GENTLY on drift if a press is not 8. Do not re-use fluid bled from system. suitable. 9. Always use clean brake fluid to clean 8. Press or drift seal in to depth of housing if hydraulic components. housing is shouldered, or flush with face of 10. Fit a blanking cap to a hydraulic union and a housing where no shoulder is provided. plug to its socket after removal to prevent Ensure that the seal does not enter the ingress of dirt. housing in a tilted position. 11. Absolute cleanliness must be observed with hydraulic components at all times. NOTE: Most cases of failure or leakage of 12. After any work on hydraulic systems, inspect oil seals are due to careless fitting, and carefully for leaks underneath the vehicle resulting damage to both seals and sealing while a second operator applies maximum surfaces. Care in fitting is essential if good pressure to the brakes (engine running) and results are to be obtained. operates the steering. FLEXIBLE HYDRAULIC PIPES, HOSES JOINTS AND JOINT FACES 1. Always use correct gaskets where they are 2. Use jointing compound only when recommended. Otherwise fit joints dry. 3. When jointing compound is used, apply in a it from entering oilways, pipes or blind tapped holes. 4. Remove all traces of old jointing materials Do not use a tool which could damage joint faces. 5. Inspect joint faces for scratches or burrs and or oil stone; do not allow swarf or dirt to enter tapped holes or 6. Blow out any pipes, channels or crevices with compressed air, renewing any O-rings or REISSUED: FEB 1993 3 |