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900194 REV B 09/16/19, PG 20 OF 42
Evaporator Firewall Bracket &
Heater Hardline Installation
1.
2.
3.
4.
5.
Locate the (2) heater hardlines (See Photo 1, below) and the evaporator firewall bracket (See Photo 2,
below).
Install a 1/4-20 x 1 ½” stud into the bottom hole on the evaporator firewall bracket, leaving a 1/2” of the stud
protruding outward (See Photo 3, below).
Install the evaporator firewall bracket onto the evaporator unit using (4) 1/4-20 x 1/2” bolts (supplied on the
evaporator sub case) (See Photo 4, below).
Install the #10 intake hardline with a properly lubricated O-ring onto the evaporator unit lower heater coil
fitting (See Figure 1, Page 21, and Photo 5, below).
Install the #10 heater water pump hardline with a properly lubricated o-ring onto the evaporator upper heater
coil fitting. (See Figure 1, Page 21, and Photo 6, below).
Heater Intake Hardline
081160
Heater Water Pump Hardline
081161
Photo 1
Install #10 Heater Intake Hardline
onto Lower Heater Coil Fitting
Photo 4
Photo 2
Evaporator Firewall Bracket
646953
Install Evaporator Firewall Bracket
onto Evaporator Unit
Install #10 Heater Water Pump
Hardline onto Upper Heater Coil Fitting
Photo 5
Photo 6
Photo 3
Install 1/4-20 x 1 ½” Stud into Bottom
Hole on Evaporator Firewall Bracket
(4) 1/4-20 x 1/2” Bolts (Supplied
on Evaporator Sub Case)