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905460 REV D 01/12/17, PG 17 OF 28
Heater Control Valve Installation
Driver Side
Under Dash Louver Installation
1.
2.
1.
Align the inner hole on the driver side louver bezel with the OEM hole under the dash as shown in Photo 38,
below. Using the bezel’s outer hole as a template, mark and drill a hole into the bottom of the dash. Install
the driver side louver bezel using (2) 10-32 x 3/4” pan head screws, (4) 3/16” flat washers and (2) 10-32
nuts with star washers (See Photo 38, below).
Insert the louvers into the louver housing (See Photo 39, below).
With the evaporator installed and (4) hoses exiting the firewall, cut the heater hose located at the 12 o’clock
position, 6 ½” from the firewall. Slide a hose clamp over the hose coming out of the firewall, push the
valve onto the hose and tighten the clamp. Connect the remaining hose to the other end of the valve, and
clamp the hose.
NOTE: The arrow molded on the heater control valve body needs to point toward
the firewall (See Photo 40, below). Ideally, the valve should be mounted as shown in Photo 40,
below. However, the valve can be rolled 90° as shown in Photo 41, below. White grease may be
used on the valve barbs to ease installation.
Photo 38
Photo 39
Photo 40
Photo 41
(2) 10-32 x 3/4”
Pan Head Screws,
(4) 3/16” Flat Washers,
and (2) 10-32 Nuts
with Star Washers
OEM Hole
Mark And
Drill
Louver
Hose
Clamp
Molded Arrow
Toward Firewall
Heater Control
Valve
Heater Control
Valve
