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901277 REV F 11/18/16, PG 9 OF 24
Evaporator Installation
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On a workbench, install the evaporator rear brackets and hardlines with properly lubricated O-rings (See
Figure 9, Page 11, and Figure 16, Page 17).
Install the front mounting bracket onto the evaporator using (2) 1/4-20 x 1/2” hex bolts, and tighten as
shown in Figure 5, below.
Drill (2) 9/32” holes in firewall using OEM dimples (See Figure 5a, below).
Lift the evaporator unit up under the dashboard. Secure loosely to the firewall from the engine compartment
side using (2) 1/4-20 nuts and washers (See Figure 5a, below).
NOTE: To ensure proper drainage, it is
very important that the evaporator is level, both left-right and fore-aft. Check for level on the flat
portions of the case around the drain.
Using the front evaporator bracket as a guide, mark and drill (2) 3/16” holes in the cowl (See Figure 5b,
below).
Using (2) #14 x 3/4” sheet metal screws, secure the front evaporator mounting bracket to the inner cowl
(See Figure 5b, below).
Verify that the evaporator unit is level and square to the dash; then tighten all mounting bolts.
NOTE:
Tighten the bolt on the firewall first. Then tighten the front mounting bracket sheet metal screws.
NOTE: To ensure a watertight seal between the passenger compartment and the vehicle exterior, for
all bolts passing through the firewall, Vintage Air recommends coating the threads with silicone prior
to installation.
Figure 5
Figure 5a
Figure 5b
Evaporator
Front Bracket
643169-FCB
(2) 1/4-20 x 1/2”
Hex Bolts
OEM Dimple
Drill 9/32”
Hole
OEM Dimple
Drill 9/32”
Hole
Passenger Side
Evaporator
Mounting Hole
Driver Side
Evaporator
Mounting Hole
Approximately 3”
Approximately 3 ½”
OEM Heater
Core Holes
(2) 1/4-20 Nuts
and Flat Washers
Passenger
Compartment
Side of Firewall
Drill
(2) 3/16”
Holes
(2) #14 x 3/4”
Sheet Metal
Screws
Inner
Cowl