Expansion Valve R E P La Ce M E N - GMC 1986 P-Truck Service Manual

1B-46 AIR CONDITIONING
301. Washer
302. Screw
303. Shroud
304. Screw
305. Clip
EXPANSION VALVE
REPLACEMENT
This system incorporates an expansion valve which
does not utilize and external equalizer line.
Remove or Disconnect (Figure 51)
1. Battery ground cable.
2. Purge the system of refrigerant.
3. Rear duct.
4. Blower motor lead.
5. Ground wire.
6. Lower to upper blower-evaporator case screws.
306. Deflector
307. Outlet
308. Bracket
309. Nut
310. Screw
Figure 50—C-K Rear Interior Roof Mounted A/C Shroud
303
Im portant
• Before removing the case screws, support
the lower case and motor assemblies to
prevent damage to the case or motor
assembly.
7. Lower case and motor assembly (336).
8. Expansion valve sensing bulb clamps.
9. Valve inlet and outlet lines.
• Cap or plug open lines.
10. Expansion valve assembly (342).
Install or Connect (Figure 51).
0
1. New expansion valve assembly (342).
• Remove caps or plug.
• Use new seals (o-rings) coated with clean
refrigeration oil.
2. Sensing bulb.
3. Lower case and blower motor assembly.
F-00224