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905458 REV E 07/10/18, PG 8 OF 29
Evaporator Assembly Preparation
1.
2.
Place the evaporator unit on a workbench.
NOTE: To avoid scratching the unit, place it on a small piece
of carpet or similar surface, as you will be turning over the unit over many times while preparing
for the installation (See Photo 1, below).
Locate the #6 A/C hose with 45° and straight female fittings. Temporarily (without an O-ring) connect the 45°
fitting on the hose to the condenser core hardline (previously installed with the condenser kit) directing the 45°
fitting down to the depression on the inner fender inside the engine compartment as shown in Photo 2, below.
Next, direct the straight end of the hose to the hole on the firewall. Using a permanent marker, make a mark
on the side of the fitting that faces the front of the truck (See Photos 3 & 4, below).
NOTE: This hose will be
permanently connected to the evaporator while on the bench. Therefore, to prevent twisting of the
hose, it is necessary to orient the 45° fitting by using the condenser core hardline as a reference.
NOTE: Preparation of the evaporator assembly will be done on a workbench. Locate the evaporator
firewall bracket, hoses, heater hose fittings, O-rings, bolts, washers, lubricant, tie wrap, and press
tape. As much as possible, always keep caps on hoses, hardlines and evaporator coils. The top of the
evaporator unit is the side with the control module.
Photo 1
Photo 2
Evaporator Unit
Photo 3
Mark Fitting
Photo 4
Mark Fitting
Condenser
Core Hardline
#6 A/C Hose
45° Fitting
Summary of Contents for 754562
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