HARNESS AS-REAR 1878546 - Caterpillar

Before starting any repair procedures, be sure to thoroughly clean the parts to be removed, and adjacent areas on the tractor to avoid entry of dirt into the winch. Do not leave any ports or access openings exposed to the weather. Seal or cap the openings to prevent entry of dust, moisture, or other foreign material. Cap or plug all exposed hydraulic ports and fittings.During disassembly, care should be taken not to damage gaskets, shims, seals and O-rings that are to be reused. Replace any such parts that are damaged or otherwise defective. Certain O-rings and seals specified in the replacement instructions must not be reused. In general, seals and O-rings that work under operating hydraulic pressures, or that require extensive disassembly to replace, should be replaced with new parts at time of reassembly.During assembly, use a suitable thread sealing compound on all capscrews that penetrate the winch case. Take care to prevent excess sealing compound from entering the winch case.Maintain strict cleanliness during rebuild to prevent entry of dirt or moisture into winch case. Hydraulic components should be rebuilt under the cleanest possible conditions.Winch Removal
Place tractor and winch in level position and drain oil from winch into a suitable container. Install drain plug securely after oil has been completely drained. Recycle or dispose of used oil in an environmentally responsible manner. Disconnect the wire harness from the winch electrical connector. Two (2) 1 in.-7 UNC threaded holes are provided in the top of the winch case for installing lifting eyebolts. Make certain eyebolt has a minimum of 1.25 in (32 mm) of thread engagement.Support the winch with a suitable hoist and remove the fasteners securing the winch to the tractor adapters.Move the winch away from tractor with caution to avoid damaging the PTO pilot and shaft. Cover the PTO opening in tractor rear face to prevent the entry of dirt or moisture.Winch Installation
Remove dirt, paint and rust from mounting surfaces of winch and tractor adapters.Coat the splines of PTO shaft and couplings with general purpose grease. Lubricate and install the O-ring(s) on to winch PTO pilot.Remove the winch top cover to gain access to the bevel gears.Carefully install the winch onto the tractor while guiding the winch PTO pilot into tractor and slightly rotating the winch bevel gears by hand to properly align PTO shaft splines. Apply Loctite 271 or equivalent to clean, dry threads of all fasteners. Install the fasteners and tighten to the recommended torque. Install the winch top access cover plate and fill the winch to proper level with recommended oil. Connect the wiring harness to the winch electrical connector.Start the tractor and test all functions before placing the unit into service.