Expansion Valve Replacement - GMC G Service Manual

IB-48 AIR CONDITIONING
8. Motor and wheels (330) from the lower case.
9. Wheels from the motor shaft.
H Install or Connect (Figure 55)
1. Wheels to the motor shaft (330).
• Place the tension springs on the wheel hubs.
2. Motor and wheels to the case.
• Align the wheels to prevent contact with the
case.
3. Motor retaining strap and foam.
4. Lower case (336) and motor assembly (330) in the
vehicle.
5. Lower to upper case screws (334).
• Turn the blower wheels to prevent rubbing
against the case.
6. Center ground wire (331) and screw (328).
7. Blower harness connector (332).
8. Rear duct (303) as outlined previously (figure 54).
9. Battery ground cable.
Figure 54 — Rear Interior Roof Mounted System — Duct
EXPANSION VALVE
REPLACEMENT
This system incorporates an expansion valve which
does not utilize an external equalizer line.
H Remove or Disconnect (Figures 55 and 56)
1. Battery ground cable.
• Purge the system of refrigerant.
2. Rear duct (303).
3. Blower motor harness connector (332).
4. Ground wire (331).
5. Lower to upper blower-evaporator case screws (334).
] Important
• Before removing the case screws, support the
lower case and motor assemblies to prevent
damage to the case, or motor assembly.
6. Lower case (336) with motor assembly (330).
7. Expansion valve sensing bulb clamps (347).
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