1-10
GROUP
1-
ENGINES
AND
EXHAUST
SYSTEMS
truck
.)
Tighten
the
compressor
mounting bolts.
The
air compressor
belt should be adjusted whenever the
fan belt is adjusted or replaced. Ad-
just the air compressor belt last.
6. Clean
Fuel
Pump
Sediment
Bowl
And
RepJace Bowl
FiUer-
Mechanical Fuel Pump. Clean the
bowl and magnetic
fi
lter (if used)
with
cleaning solvent and
dry
them
with compressed air (Fig. 5). Re-
place the gasket if it
is
defective.
If
a filter element
is
used, discard
the element
and
element gasket, and
in
stall a new element and gasket.
USED
ON
ENG
IN
ES
WITH
A
FUEL
LINE
filTER
SCRE
EN
FI
LTER
©>-
GASKE
T
-~"
..
ENG
I
NES
W
ITH
OUT
A
FUEL
LINE
BAIL
--~
\~~~
FIG.
5-Sedimenl
Bowl
GASKET
MAGNETI
C
FILTER
81078·8
7. Drain Fuel System
Filter-
332
HD
V -S. Remove the drain plug
(Fig.
6)
and drain the fuel from the
filter into a suitable container.
After
dr
aining, install the drain plug.
S.
Repla
ce
Fuel
System
Filter
Element-HD
V
~8
Engines. On a
292 or
302
HD
V-S, unscrew the
lower section of the filter, and
re-
move it, the filter element, and the
gasket (Fig. 7). Discard the filter ele-
ment. Clean the lower section in
sol-
vent. Place a new
fi
lt
er
element in
the lower section.
Place a new
ga
sket
in the upper section and screw the
lower section firmly into the upper
section.
Start the engine, and check
for
le
aks.
FIG
.
6-332
HD
Fuel
Line
Filler
Inslallalion
On
a 332
HD
V
-B,
drain the fuel
from the filter bowl into a suitable
container. Remove the center bolt
and washer, then remove the filter
bowl and gasket. Remove the filter
element,
ga
skets, and spring assem-
bl
y.
Discard the filter element. Clean
the filter bowl, and the inlet and out-
let openings in the upper body.
In-
spect the bowl gasket and replace it
if necessary. Position the gaskets and
spring assembly in the filter bowl as
shown in Fig.
8.
Install a new
element
in the filter bowl. Position
the filter and gasket against the up-
per body. Install and tighten the
cen-
ter bolt and washer.
9. Check
And
Adjust
Carburetor
Fuel
Level
SINGLE-BARREL. Remove the
power valve diaphragm cover and
va
lv
e assembly.
FIG.
7-292
and 302
HD
v-a
Fuel
Line
Filler
Inslollalion
r~"
~"
WASHER
---.;.
(P
FILTER
ElEMENT
~UPPER
~
80DY
61
9>-
GASKETS
SP.,NG
............
~p
S
EAT
-..,
....!5
GASKETS
SPRING
-----~
R--FILTE.
V BOWL
DRAIN
PLUG~
81194·A
FIG.
8-332
HD
Fuel
Line
Filler
Place the fuel gauge in the open-
ing and
crank
the engine.
The
fuel
should touch the tip
of
the "low"
gauge pin and should
not
touch the
tip of the
"high" gauge pin (Fig. 9).
If
the fuel level
is
too high
or
too
low drain the fuel from the fuel bowl
into
a suitable container and remove
the fuel bowl.
ln
sta
ll
the dummy bowl using the
fuel bowl gasket and three
of
the re-
taining screws (Fig.
9). Position a
suitable container under the
carbure-
tor to collect any spill-over of fuel.
To
adjust the fuel level, bend the
float arm tab.
Crank
the engine and
check the fuel level.
DUAL
AND
4-BARREL. Posi-
tion the truck on a level floor.
Be
s
ur
e the fuel pump pressure is within
spec
ifi
cations. Operate the engine
until normal operating temperature
has been reached.
Place a suitable
container below the fuel level sight
plug to collect any spill-over
of
fuel
(on a 4-barrel carburetor, check each
bowl separately).
With the engine stopped, remove
the fuel level sight plug and gasket
and check the fuel leve
l.
The
fuel
level within the bowl should be
at
the lower edge
of
the sight plug open-
ing ±
lAG
inch.
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