880891T13 Mercury ECU, Engine Control Unit

Effective July 1, 1992 regulations prohibit the venting of any refrigerant into the atmosphere. Refer to Caterpillar publications Service Manuals, SENR3334, SENR5665, or NEDG5065 for the proper procedure, the proper equipment, and the proper tools needed in order to reclaim refrigerant from any Caterpillar equipment.
Personal injury can result from contact with refrigerant.This system is under pressure at all times, even if the engine is not running. Heat should never be applied to a charged system.Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury.Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant.Always use caution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, evacuate the system recovering the refrigerant before removing the fitting.Personal injury or death can result from inhaling refrigerant through a lit cigarette.Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death.Do not smoke when servicing air conditioners or wherever refrigerant gas may be present.Before any checks of the air conditioning and heating system are made, move the machine to a smooth horizontal surface. Lower all implements to the ground. Make sure the transmission is in neutral or park and that the parking brake is engaged. Keep all other personnel away from the machine or where they can be seen.
Note: Refer to the Air Conditioning And Heating Service Manual, SENR3334 and the Air Conditioning And Heating Service Manual, SENR5664 for purging and charging the air conditioning system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
Note: Mark all hoses, lines, wires, and tubes for identification purposes. Cap all hoses, lines, and tubes in order to prevent foreign material from entering the system.Note: Drain all fluids in a suitable container for storage or disposal.
Evacuate the air conditioning systems.
Drain the hydraulic system.
Drain the power train oil system.
Illustration 1 g00668115
Disconnect four hose assemblies (2) from implement pump (1) .
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Disconnect four hoses (3) from pump (4) .
Remove clip (5) from pump (4) .
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Disconnect hose assembly (6) from equalizer bar pin (7) .
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Remove hydraulic hose assembly (8) .
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Remove hose assemblies (9) , (10) , and (11) .
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Disconnect wire harness connectors (12) .
Remove the bolt and harness clip (13) .
Illustration 7