Air Conditioning Evaporator Thermal Expansion Valve Replacement. Isuzu Isuzu MD Steel Tilt (F Model) 1998

For 1990-2009 cars only

Makes 🢒 Isuzu 🢒 1998 🢒 Isuzu MD Steel Tilt (F Model) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Air Conditioning Evaporator Thermal Expansion Valve Replacement

Removal Procedure

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

Disconnect the negative battery cable. Refer to Battery Replacement in Engine Electrical.
Open the hood.
Secure the hood.
Discharge and recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging .
Remove the right wiper arm linkage from the wiper arm pivot.

Remove the low pressure hose from the A/C evaporator.
Remove the low pressure hose.
Remove the O-ring seal.

Discard the O-ring seal.

Remove the high pressure hose.
Remove the high pressure hose O-ring seal from the A/C evaporator. Discard the O-ring seal.

Remove the A/C evaporator core cover screws.

Remove the A/C evaporator core cover.

Remove the A/C spacer.
Remove the A/C evaporator.
Remove the screw and the clamp.

Remove the A/C expansion valve from the low pressure fitting.
Remove the A/C expansion valve O-ring seal from the low pressure fitting.
Discard the O-ring seal.
Remove the A/C expansion valve from the A/C evaporator core.
Remove the A/C expansion valve O-ring seal from the A/C evaporator core.
Discard the O-ring seal.

Installation Procedure

Coat the new O-ring seal with R-134a Swish Plate P/N AIPDN 2-90188-300-0 refrigerant oil.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the new O-ring seal and the expansion valve to the A/C evaporator core.

Tighten
Tighten the A/C expansion valve fitting to 20 N·m (15 lb in).

Coat the new O-ring seal with R-134a Swish Plate P/N AIPDN 2-90188-300-0 refrigerant oil.
Install the new O-ring and A/C expansion valve to the low pressure hose fitting.

Tighten
Tighten the A/C expansion valve low pressure fitting to 15 N·m (11 lb in).

Install the screw and the clamp.

Fill the A/C evaporator core. Refer to Refrigerant Oil Distribution Specifications .

Install the A/C evaporator spacer.

Install the A/C evaporator core cover.
Install the A/C evaporator core cover screws.
Coat the new O-ring seal with R-134a Swish Plate P/N AIPDN 2-90188-300-0 refrigerant oil.

Install the new O-ring and the high pressure hose to the A/C evaporator.
Coat the new O-ring seal with R-134a Swish Plate P/N AIPDN 2-90188-300-0 refrigerant oil.
Install the new O-ring and the low pressure hose to the A/C evaporator.

Tighten

•	Tighten the high pressure hose fitting at the A/C evaporator to 18 N·m (13 lb in).

•	Tighten the low pressure hose fitting at the A/C evaporator to 32 N·m (24 lb in).

Push carefully on the right wiper arm linkage.
Close the hood.
Secure the hood.
Connect the negative battery cables.
Inspect the system for leaks. Refer to Leak Testing .