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I
t
I
(2) Connect the wiring
harness
to the
termi-
nals of
the
ignition
unit
assembly.
Refer to
wiring
diagram, Figure 3,
for
pr
oper wire
colors and their respective terminals.
HEATER BODY
Removal
Disconnect
the
two
wires from
the
terminals
at the
front
end of the
heater
assembly.
Remove
the
two screws from the front end
of
the heater
case upper half and the one
screw
near the dash
panel.
Lift
the f
r
ont end of the
case up and dis-
connect the spark plug wire from the
spark
plug terminal.
Remove
spark
plug
wire and
the
grommet from the
heater
lower case half.
With the heater case
upper
half held up
in
a
raised
position
disconnect
the fuel inlet
line
fitting at the burner
and
exchanger assembly.
Remove
the fuel
line and
grommet from the
heater case lower half.
Disconnect the heater blower
hose
with
grom_
met
from the burner and exchanger assembly.
Remove the
exhaust pipe to heater clamp
at-
taching
screw
rrom
the under side of the heater
lower case and disengage the exhaust pipe.
Re-
move
the rubber adaptor connecting the heater
housi
ng (engine
side)
to
the heater
case
lower
half.
Remove
the
self-tapping screws securing
the heater assembly to the dash
panel. Remove
the heater assembly
and
the dash
panel
mount-
ing
gasket.
Installation
NOTE: Befm'e
installing
heater body, refer
to
"CLEANING AND INSPECTION."
If
heater to dash
panel
gasket
is
damaged, in-
stall
a
new
gasket holding
it
in place with
ce-
ment.
Position
heater
case
lower half on
the
dash panel, aligning the heater flange with the
four screws
protruding
through the dash
panel.
Install
the self-tapping
metal
screws in
the
holes provided.
Reinstall
the ventilator blower
motor
ground
wi re. An external tooth
lock
washer must
be
installed between the head of
the screw and the ground wire
terminal. Tight-
en all screws securely.
Connect the exhaust pipe
to
the
heat
ex-
changer outlet tube.
Install
exhaust
pipe clamp
and screw. Tighten
screw
secur
ely.
Insert
the
heater burner
blower hose on the burner and
exchanger assembly opening. Tnstall the
spark
plug cable on
spark
plug
terminal,
making cer-
87
tain
that
the cable grommet
is
properly posi-
tioned
in
the slot
of the
case
lower
half. Position
fuel line and grommet in heater case
lower
half
and
connect fue
l
line. Tighten fitti ng securely.
Position
heater
case upper half and
connect
the overheat
sw
itch
wires (the
black
wire to the
fuel valve
coil cover terminal and thc white wire
to the coil terminal). Install the heater case
upper
half
and tighten the three attaching
screws
secu
rely.
Install
rubber adaptor between
ventilator blower housing and healer case.
Con-
nect
the
two
heater wires
to
the
terminals
lo-
cated on the front end of the heater upper case.
Refer
to wiring diagram Figu
r
e 3, for proper
wires and terminals.
BURNER AND EXCHANGER ASSEMBLY
Removal
Disconnect the
two wires from the
terminals at
the front end of the heater assembly. Remove
the two
screws
from the front
end
of
the
heater
~
,
case upper half and the one
screw
near the
da~h
panel. Raise the front end
of
the
case
and dis-
connect
the spa
r
k plug wire from the spark plug
terminal.
Remove
the two wires from the fuel
valve coil term inals
and
lift off the case upper
half. Remove
spark plug wire and the grommet
from the heater case lower
half.
Disconnect the fuel
inlet
line
fitting at the
burner and exchanger assembly.
Remove
the
fuel
line and
gr
ommet from
the heater
case
lower
half.
Disconnect the
heater blower hose
with g rommet from the
burner
and exchanger
assembly.
Remove the
clamp
scr
ew and tinnerman fas-
tener attaching
burner
and exchanger assembly
to the heat exchanger and
remove
clamp. Lift
out the burner
and
exchanger assembly from
the case lower half.
Disassembly
Remove
gasket from louver plate and
mix~r
as-
sembly.
LooRen
the
spark
plug guide
screw
lo-
cated on the
side
of the burner and exchanger
housing. Remove
the two
screws
and
lockwash-
ers
securing the spark plug cap to the burner
and exchanger housing. Carefully lift out
spark
plug, cap,
and the
two
gaskets.
Remove
fuel
valve coil cover screw and cover.
Lift
out
coil
nnd
the cork retainer gasket.
Re-
move
the
fuel line inlet fitting
fr om
the burner
and exchange]'
housing,
using a l}'Ju inch box
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