12
901149 REV D 7/30/14, INST 67-72 CHEVY PICKUP wo AC EVAP KIT PG 12 OF 24
Evaporator
Case
1”
Drain
Hose
1”
1.
2.
3.
Locate evaporator drain on bottom of
evaporator case.
In line with drain, lightly make a mark on the
firewall. Measure 1” down and drill a 5/8”
hole through the firewall.
Install drain hose to bottom of evaporator unit
and route through firewall. Install 1/2” 90°
drain elbow onto drain hose.
Figure 8
A/C Hose Installation
Standard Hose Kit:
Modified A/C Hose Kit:
Locate the #8 compressor A/C hose. Lubricate (2) #8 O-rings (See Figure 9, above) and connect the 135°
female fitting with 134a service port to the #8 discharge port on the compressor. Route the straight female
fitting to the #8 condenser hardline coming through the core support (See Figure 11, Page 14). Tighten each
fitting connection as shown.
Locate the #10 compressor A/C hose. Lubricate (2) #10 O-rings (See Figure 9, above) and connect the #10
135° female fitting with 134a service port to the #10 suction port on the compressor. Route the 90° female
fitting to the #10 evaporator (See Figure 10, Page 13, and Figure 11, Page 14). Tighten each fitting connection
as shown.
Locate the #6 evaporator A/C hose. Lubricate (2) #6 O-rings (See Figure 9, above) and connect the straight
female fitting to the #6 condenser hardline coming through the core support. Route the 90° female fitting to
the #6 evaporator (See Figure 10, Page 13, and Figure 11, Page 14). Tighten each fitting connection as shown.
1.
2.
3.
1.
Figure 9
O-ring Installs
Over Male Insert
to Swaged Lip
O-ring
#6 O-ring
#8 O-ring
#10 O-ring
O-ring
Supplied Oil
for O-rings
Male
Insert
Female Nut
Hold With
This Wrench
Twist With
This Wrench
Lubricating O-rings
For a proper seal of fittings: Install supplied
O-rings as shown, and lubricate with supplied
oil.
NOTE: Standard torque specifications:
#6: 11 to 13 ft-lb.
#8: 15 to 20 ft-lb.
#10: 21 to 27 ft-lb.
Refer to separate instructions included with modified hose kit.
