11
901149 REV D 7/30/14, INST 67-72 CHEVY PICKUP wo AC EVAP KIT PG 11 OF 24
Inner Cowl
Drill (2)
3/16” Holes
(2)#14 x 3/4
Sheet Metal
Screws
1/4-20 x 1”
Hex Bolt
1/4-20 x 1”
Hex Bolt
Flat
Washer
1/4”
Flat
Washer
1/4” Nut w/
Star Washer
View From
Passenger Side,
1.
2.
3.
Lift evaporator unit up under the dashboard, and secure loosely to the firewall using (2) 1/4-20 x 1” hex bolts,
(2) flat washers and (2) 1/4” nuts with star washers (See Figure 7, below). NOTE: To ensure proper
drainage, it is very important that the evaporator is level, both left-to-right and fore-aft. Check for
level on the flat portions of the case around the drain, block the unit up, and then drill holes for
front bracket screws.
Secure the front evaporator mounting bracket to the cowl using (2) #14 x 3/4” hex sheet metal screws (See
Figure 7a, below).
Verify that the evaporator unit is level and square to the dash, and then tighten all mounting bolts. NOTE:
Tighten the bolt on firewall first, and then the front mounting bracket.
Figure 7
Figure 7a
