0446240 JOHNSON SEAL, Cover, port

Table 1
Required Tools    
Tools     Part Number     Description     Qty    
A     6V-3145     Load Leveler     1    Start By:
Remove the transfer gearbox. Refer to Disassembly and Assembly, "Transfer Gearbox - Remove".Note: Put identification on all lines, hoses, wires, and tubes for installation purposes. Install a cap or a plug on all lines, hoses, and tubes in order to prevent foreign material from entering the system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. 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 on Caterpillar products.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 cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Release the pressure in the cooling system by slowly loosening the filler cap on the radiator. Drain the fluid from the radiator into a suitable container for storage or disposal.
Effective July 1, 1992 regulations prohibit the venting of any refrigerant into the atmosphere. Refer to Caterpillar publications Service Manuals, SENR3334, SENR5664, and 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.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 precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area.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.Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.
Drain the refrigerant from the air conditioning system. For purging and charging the air conditioning system, refer to Air Conditioning and Heating Service Manual, SENR5664.
Illustration 1 g00612023
Disconnect wires (3) and hose (2) from radiator tank (1) .
Illustration 2 g00612011
Loosen clamps (4) and (6). Remove return tube (5) for the aftercooler.
Illustration 3 g00612021
Loosen clamps (7) and (9). Remove tube (8) .
Illustration 4 g00612027
Loosen clamp (10). Disconnect upper radiator hose (11) from the water temperature regulator housing.
Illustration 5 g00612031