VALVE GP-SOLENOID & PRESS REDC 3237894 - Caterpillar

Move the disconnect switch to the OFF position.
Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
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 procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the tools.
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Remove cover (1).
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Remove clamps (2) and position dryer (3) out of the way. Disconnect hoses (4).
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Remove clamp (5) in order to disconnect hose assemblies (7). Disconnect harness assembly (6).
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Disconnect harness assembly (8).
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Support evaporator coil and heater coil assembly (10) with suitable cribbing. Remove screws (9).
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Disconnect harness assemblies (11). Remove evaporator coil and heater coil assembly (10).
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Remove sensor (12).
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Disconnect harness assembly (13). Remove grommet (14).
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Remove drain hose (15).
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Remove cable strap mount (16). Remove bolts (17). Remove case (18).
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Remove screws (19). Disconnect hose (20).
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Loosen screw (21). Remove screws (23). Remove heater core assembly (22).
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Remove screws (24).
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Remove screws (26). Remove evaporator coil (25). Installation Procedure
Install evaporator coil and heater coil assembly (10) in the reverse order of removal.