9
901149 REV A 12/23/10, INST 67-72 CHEV P-UP wo AC EVAP KIT PG 9 OF 24
BRACKET & EVAPORATOR HARDLINE INSTALLATION
ON A WORK BENCH INSTALL EVAPORATOR REAR BRACKET USING
(4) 1/4-20 x 1/2” HEX BOLTS.
INSTALL HARDLINES WITH PROPERLY LUBRICATED
O-RINGS. (SEE FIGURE 9, PAGE 12, AND
FIGURE 6, PAGE 10.)
NOTE: WRAP THE #10 FITTING CONNECTIONS
WITH PRESS TAPE. SEE FIGURE 6, PAGE 10.
INSTALL EVAPORATOR FRONT BRACKET
ON EVAPORATOR USING (2)1/4-20 x 1/2”
HEX BOLTS AND TIGHTEN AS SHOWN IN
FIGURE 5 BELOW.
(2)1/4-20 x 1/2”
HEX BOLT
FRONT
EVAPORATOR
BRACKET
644080
FIGURE 5
FIGURE 4
APPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF THE FRESH AIR CAP AS SHOWN IN FIGURE 4,
BELOW.
ATTACH FRESH AIR CAP TO FIREWALL USING A 1/4-20 x 1” BOLT AND WASHER, SEE FIGURE BELOW.
APPLY A 1/4” BEAD OF SILICONE AROUND THE BACK SIDE OF THE FIREWALL COVER AS SHOWN BELOW.
INSTALL FIREWALL COVER TO FIREWALL USING (2) 1/4-20 x 1” HEX BOLTS, (2) FLAT WASHERS AND 1/4” NUT
w/ STARWASHERS IN THE OEM HOLES AS SHOWN BELOW.
USE FIREWALL COVER AS TEMPLATE TO DRILL (6) 3/16” HOLES IN FIREWALL AND THEN SECURE USING
#14 x 3/4” SHEET METAL SCREWS AS SHOWN BELOW.
USING FIREWALL COVER AS TEMPLATE DRILL (2) 9/32” HOLES IN FIREWALL AS SHOWN BELOW.
INSTALL GROMMETS AS SHOWN BELOW.
FRESH AIR CAP AND FIREWALL COVER INSTALLATION
SILICONE
BACK SIDE
OF FRESH AIR
CAP
BACK SIDE
OF FIREWALL
COVER
648218
1/4-20 x 1”
BOLT
SILICONE
1/4” FLAT
WASHER
1/4-20 x 1”
BOLT
1/4-20 x 1”
BOLT
DRILL
9/32” HOLE
DRILL
9/32” HOLE
1/4” FLAT
WASHER
1/4” NUT w/
STAR WASHER
1/4” NUT w/
STAR WASHER
OEM
HOLE
(6) #14 x 3/4”
SHEET METAL
SCREW
LARGE
GROMMET
33137-VUI
GROMMET
33135-VUI
3/8”
GROMMET
33144-VUI
1/4” FLAT
WASHER
FRESH AIR
CAP
OEM
HOLE
