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905458 REV E 07/10/18, PG 9 OF 29
1.
2.
3.
Using a properly lubricated O-ring, install the lower heater hose fitting (from intake) onto the evaporator (See
Photo 1 & Figure 1, below).
Install the firewall bracket onto the evaporator using (3) 1/4-20 x 1/2” bolts (supplied on evaporator unit)
(See Photos 2, 3, & 4, below).
NOTE: When heater hoses are installed, they will pass through the
firewall bracket. Therefore, ensure that the heater hose fittings are centered in the 1.100” holes on
the bracket (See Photo 2, below).
Install the upper heater hose fitting (to water pump) onto the evaporator with a properly lubricated O-ring
(See Photo 3 & Figure 1, below).
Firewall Bracket and
Heater Hose Fitting Installation
Figure ##
O-ring Installs
Over Male Insert
to Swaged Lip
O-ring
#6 O-ring
#8 O-ring
#10 O-ring
O-ring
Supplied Oil
for O-rings
Male
Insert
Female Nut
Hold With
This Wrench
Twist With
This Wrench
Lubricating O-rings
For a proper seal of fittings: Install supplied
O-rings as shown, and lubricate with supplied
oil.
NOTE: Standard torque specifications:
#6: 11 to 13 ft-lb.
#8: 15 to 20 ft-lb.
#10: 21 to 27 ft-lb.
Figure 1
Lower Heater Hose Fitting
Photo 1
Photo 4
Photo 3
Photo 2
Upper Heater Hose Fitting
Firewall Bracket
Center Hose Fitting in Hole
(2) 1/4-20 x 1/2” Bolts
1/4-20 x 1/2” Bolt
Summary of Contents for 754562
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