O Rifice (Expansion Tube) R E P Lace M E N - GMC 1986 P-Truck Service Manual

53. Actuator
154. Connector
145. Valve
146. Housing 155. Screw
156. Bracket
147. Screw
148. Core 157. Shaft
158. Spacer
149. Strap
159. Spring
150. Screw
160. Shaft
151. Clamp
152. Connector 161. Bracket
153. Link 162. Case
• Cap or inlet open connections.
6. Expansion tube. Refer to " Orifice (Expansion
Tube) Replacement" .
7. Evaporator core assembly.
Install or Connect (Figure 33)
1. New core.
• Add 90 ml (3 ounces) of clean refrigeration
oil.
2. Expansion tube.
3. Inlet and outlet lines.
• Use new seals (o-rings) coated with clean
refrigeration oil.
4. Bead of sealer to cover.
• Remove old sealer before applying new
bead of sealer.
5. Evaporator case cover.
6. Nuts to the studs that project into the dash panel.
6. Battery ground cable.
} 47 148 149
163. Valve
164. Nut
166. Valve
167. Screw
168. Link
169. Pin
170. Seal
171. Vaive
Figure 34--C -K A/C ar
AIR CONDITIONING
150 ^ — 152
•i 4=^)
172. Connector
173. Plate
174. Grommet
175. Hose
176. Screw
177. Yoke
Heater Component View
7. Evacuate, charge and check the system.
ORIFICE (EXPANSION TUBE)
REPLACEMENT
The expansion tube is located in the evaporator core
inlet line.
+■► Remove or Disconnect (Figures 4 and 33)
1. Discharge the system.
2. C o n de n ser to the e va p o ra to r lin e at the
evaporator inlet (figure 35.)
• Cap or plug the open line.
3. Expansion tube from the evaporator core inlet
line.
• Use needle-nose pliers to remove the core.
4. Expansion tube seal (o-ring) from the core inlet
line.
1B-35
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^ ^ < 1 5 3
^154
157
F-00093