450F Backhoe Loader Engine Supplement Caterpillar

Removal Procedure

Start By:

1. Remove hood assembly.
2. Remove side panels.

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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.

1. Recover the air conditioner refrigerant from the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the correct tools.

2. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining procedure.

3. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the draining procedure.

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Illustration 1	g03254338

4. Remove air inlet tube assemblies (6). Remove all coolant hoses (7) .

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Illustration 2	g03254439

5. Disconnect fuel lines (8). Remove bolts (9) and coolant tank (10) .

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Illustration 3	g03254476

6. Disconnect hydraulic tube assemblies (11). Remove plates (12) .

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Illustration 4	g03254497

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Illustration 5	g03254502

7. Install Tooling (A) to radiator, fuel cooler, after cooler, and hydraulic and XMSN oil cooler (13). The weight of radiator, fuel cooler, after cooler, and hydraulic and XMSN oil cooler (13) is approximately 70 kg (155 lb). Remove mount assemblies (14) and radiator, fuel cooler, after cooler, and hydraulic and XMSN oil cooler (13) .

Installation Procedure

1. Install radiator, fuel cooler, after cooler, and hydraulic and XMSN oil cooler (13) in the reverse order of removal.

   1. Tighten the bolts (9) to a torque of 15 ± 3 N·m (133 ± 27 lb in).