Vintage Air 571065, Manual

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901305 REV C 9/26/2014, PG 11 OF 23
Drill (4) 1 ¼” holes in firewall using measurements in Figure 10, below.
Drill 5/8” hole in firewall (See Figure 10, below).
Install grommets in firewall (See Figure 10, below).
Firewall Modification
1.
2.
3.
Remove lip on firewall (See Figure 9, below).
Enlarge OEM hole on firewall to 3/8” (See Figure 9, below).
Apply a 1/4” bead of silicone around the back side of the firewall cover as shown in Figure 9, below.
From the engine compartment, install firewall cover onto firewall and secure to firewall using (3) 1/4-20 x
3/4” hex bolts, (6) 1/4” flat washers and (3) 1/4” nuts w/ star washers as shown in Figure 9, below.
Firewall Cover Installation
1.
2.
3.
4.
Engine
Compartment
Side of
Firewall
Figure 9
Figure 10
Back Side of
Firewall Cover
Silicone
Enlarge OEM
Hole to 3/8”
View Shown
From Inside Car,
Through Dash
Remove Lip
on Firewall
(3) 1/4-20 X 3/4”
Hex Bolts
Firewall Cover
644116
(6) 1/4”
Flat Washers
(6) 1/4”
Nuts w/
Star Washers
2”
1 ½”
1 ¼”
1 ¾”
3 ¾”
Drill (4) 1 ¼”
Holes in Firewall
(4) Grommets
33137-VUI
Drill 5/8”
Hole
6 ⅜ ”
Metal
Kick Panel
Passenger Side
Under Dash
Cowl
3/8” Grommet
33144-VUI