User manual BENDIX FD-2 CLUTCH TYPE FAN DRIVE

[. . . ] ® Bendix® FD-2TM Clutch Type Fan Drive BEARINGS PULLEY PRESSURE PLATE FAN HUB RETURN SPRING AIR INLET PISTON HOUSING PISTON BEARINGS LOCK NUT FIGURE 1 SHAFT DUST CAP DRIVE PIN BRACKET FIGURE 2 DESCRIPTION The Bendix® FD-2TM fan clutch is an air operated thermostat controlled clutch for the engine cooling fan. Its purpose is to maintain engine temperature by engaging or disengaging the cooling fan, thereby providing better fuel economy, greater engine efficiency, faster warm-ups, and a quieter vehicle. The FD-2TM fan clutch is produced in several different models to accommodate the variety of installation requirements resulting from the many engine, vehicle and accessory combinations. Its fail-safe design prevents overheating in the event of air loss for any cause. OPERATION GENERAL The FD-2TM fan clutch replaces the standard fan hubs on the engine and interchanges with other Bendix and competitive fan clutches. [. . . ] If it can be turned, the clutch is defective and must be repaired or replaced. Check the operation of the thermostatic control valve by running the engine up to operating temperature. Note that the fan clutch engages when engine temperature rises to normal or above and disengages after fan cooling is accomplished. Normal engagement time should not exceed two minutes. If engagement time does not exceed two minutes, proceed to Step #4. If engagement time does exceed two minutes: A. If this test is being performed for the first time after installation of the fan clutch, recheck the setting of the thermostatic control valve and compare it with the setting of the engine coolant thermostat or in the case of vehicles with radiator shutters, with the setting of the shutter control. The fan clutch control should always be 10° F. higher than the highest setting. 4 WARNING!PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH: When working on or around a vehicle, the following general precautions should be observed at all times. Park the vehicle on a level surface, apply the parking brakes, and always block the wheels. Stop the engine and remove ignition key when working under or around the vehicle. When working in the engine compartment, the engine should be shut off and the ignition key should be removed. Where circumstances require that the engine be in operation, EXTREME CAUTION should be used to prevent personal injury resulting from contact with moving, rotating, leaking, heated or electrically charged components. Do not attempt to install, remove, disassemble or assemble a component until you have read and thoroughly understand the recommended procedures. Use only the proper tools and observe all precautions pertaining to use of those tools. If the work is being performed on the vehicle's air brake system, or any auxiliary pressurized air systems, make certain to drain the air pressure from all reservoirs before beginning ANY work on the vehicle. If the vehicle is equipped with an AD-ISTM air dryer system or a dryer reservoir module, be sure to drain the purge reservoir. Following the vehicle manufacturer's recommended procedures, deactivate the electrical system in a manner that safely removes all electrical power from the vehicle. 5 19 8 7 6 4 3 14 2 27/32" DRILL THRU (2 HOLES FOR 3/4" BAR) MATERIAL O. H. T. S. TUBING HDN & DRAW RC 40-45 18 17 16 15 13 9 11 2-3/4" 12 10 2. 125 + . 010 1 4-7/8" 6" 5-1/8" . 235 + . 002 CENTERED (4 LUGS) 1/32" FLAT FIGURE 9 6. Never exceed manufacturer's recommended pressures. Never connect or disconnect a hose or line containing pressure; it may whip. [. . . ] Install snap ring (14) flat side towards bearing. INSTALLATION 1. Attach fan clutch unit to vehicle by installing cap nuts and lockwashers through mounting bracket holes into mating holes in engine bracket. Adjust fan belts per vehicle manufacturer 's recommendation. Replace fan on pressure plate with six cap screws and lockwashers. [. . . ]