GMC 1976 ZEO 6083 Maintenance Manual page 775

Figure 19-Removing Furnace from Outer Casing
INSTALLATION
1 . Referring to Figure 20, connect gas supply line
to gas valve.
bly .
2. Install four gas valve mounting screws .
3. Install gas line from gas valve to burner assem-
4. Connect two electrical wires to terminals on
gas valve.
5 . Install furnace in outer casing (See figure 19).
Figure 20-Removing Gas Line from Gas Valve
FURNACE
24G- 1 3
6. Install furnace plenum (See figure 18) . Install
wiring access cover.
7. Install furnace in vehicle. See "Furnace Re-
placement" earlier in this section.
IGNITION PAK REPLACEMENT
REMOVAL
1 . Remove furnace from vehicle . Refer to "Fur-
nace Replacement" earlier in this section .
19).
2. Remove wiring access cover (See figure 18).
3 . Remove furnace from outer casing (See figure
4. Disconnect hi tension cable from spark elec-
trode.
5. Disconnect two electrical wires from ignition
pak (See figure 21). Be sure to note which terminal
each wire is removed from, to aid in proper installa-
tion .
6. Loosen mounting screw and remove ignition
pak.
INSTALLATION
1 . Position ignition pak under mounting strap as
shown in Figure 21 . Tighten mounting screw.
2. Connect two electrical wires to terminals on
ignition pak.
Figure 21-Ignition Pak Installed