Blower-Evaporator Assembly R E P La C E M E N; Blower Assembly Replacement - GMC 1986 P-Truck Service Manual

1B-66 AIR CONDITIONING
Figure 77—Blower - Evaporator Assembly
BLOWER-EVAPORATOR
ASSEMBLY REPLACEMENT
Remove or Disconnect (Figures 77 and 78)
□
1. Battery ground cable.
2. Purge system of refrigerant.
3. Inlet and outlet refrigerant lines.
• Cap or plug all open connections (401).
4. Drain tube from evaporator case.
5. Electrical connector from the compressor.
6. Terminal (910).
— Allow connector to hang on the ground wire.
7. Screws securing the grommet retainer to the
dash panel.
8. Wire from the grommet through the slit.
9. Electrical lead at the connector.
(Narrow Blade)
911. Terminal
A. Insert screwdriver in groove and press tang
toward terminal to release.
B. Pry tang back out to insure locking when
reinstalled into connector.
Figure 78—Terminal Removal
Hose Assem blies
Evaporator Assembly
Motor Blower Assembly
A/C W iring Harness
F-00398
913. Tang
914. Groove
F-00399
P . Correct Blower Blade Angle
Figure 79—Blower Assembly
10. Unit mounting bolts.
11. Unit from the vehicle carefully pulling the
compressor electrical lead through the dash.
-►*- Install or Connect (Figures 77 and 78)
1. Unit to the vehicle.
2. Mounting bolts.
3. Electrical lead to the connector.
4. Wire from grommet through the slit.
5. Screws that secure the grommet retainer to the
dash.
6. Terminal.
7. Ground wire.
8. Electrical connector from the compressor.
9. Drain tube.
10. Refrigerant lines.
11. Battery ground cable.
12. Evacuate, charge and check the system.
BLOWER ASSEMBLY
REPLACEMENT
Remove or Disconnect (Figure 79)
1. Cover plate.
• Separate the upper and lower case halves.
2. Blower motor mounting strap screw.
3. Blower assembly.
4. Wheels from the motor shaft.
Install or Connect (Figure 79)
1. Wheels to the motor shaft.
• Place the wheels with the lower blades
curved toward the dash panel side of the
unit when the motor is placed in the case
(P).
2. Mounting strap.
F-0040Q