Page 925 of 1502
14
- 106
FUEL SYSTEi
DIESEL FUEL
INJECTION-SERVICE
PROCEDURES
INDEX
page
Air Bleed Procedure
106
Air Fuel Control Tube
107
Air Intake Heater
107
Engine
Speed
Sensor
108
Fuel Drain Manifold
109
Fuel Heater
. 110
Fuel
Injection
Pump
110
Fuel
Injection
Pump Supply Line
114
Fuel
Injectors
114
AIR BLEED PROCEDURE
A certain amount
of air
becomes trapped
in the
fuel system when fuel system components
are
ser
viced
or
replaced. Bleed
the
system after fuel system service according
to the
following procedures.
WARNING:
DO NOT
BLEED
AIR
FROM
THE
FUEL
SYSTEM
OF
A
HOT
ENGINE.
DO
NOT
ALLOW FUEL
TO SPRAY ONTO
THE
EXHAUST MANIFOLD WHEN BLEEDING
AIR
FROM
THE
FUEL SYSTEM.
MANUAL BLEEDING
Some
air
enters
the
fuel system when
the
filters
or
injection pump supply line
are
changed. This small
amount
of air is
vented automatically from
the
injec
tion pump through
the
fuel drain manifold. This
is if
the filter
was
changed according
to
instructions.
The system will have
to be
bleed manually
if:
•
The
fuel filter
is not
filled before installation
•
Injection pump
is
replaced
•
High pressure fuel line connections
are
loosened
or
lines replaced
•
Initial engine start-up
or
start-up after
an ex
tended period
of no
engine operation. (1) Open
the low
pressure bleed screw
(Fig. 1).
(2) Operate
the
hand lever
on the
mechanical lift
pump until
the
fuel exiting
the low
pressure bleed screw
is
free
of air.
If
the
manual lever feels
as if it is not
pumping,
ro
tate (crank)
the
engine approximately
90
degrees. Continue pumping until
air is
removed. (3) Tighten
low
pressure bleed screw
to 8 N»m (6
ft.
lbs.)
torque.
CAUTION:
The
manual lever must
be
returned
to
the lock position
(up) after
priming.
INJECTION
PUMP
WARNING:
THE
ENGINE
MAY
START WHEN
CRANKING
TO
BLEED
AIR
FROM
THE
INJECTION
page
Fuel/Water Separator
Filter
................
115
High
Pressure Fuel Lines
116
Injection
Timing
117
KSB
Solenoid
118
Mechanical
Lift
Pump
119
Powertrain Control Module (PCM)
108
Throttle
Position
Sensor
(TPS)
119
Water-ln-Fuel
Sensor
121
Fig.
1
Low
Pressure
Bleed Screw
PUMP.
PLACE
THE
TRANSMISSION
IN
NEUTRAL
OR
PARK
AND SET
PARKING BRAKE BEFORE
EN
GAGING
THE
STARTER MOTOR.
CAUTION:
Do
not
engage
the
starter
motor
for
more
than
30
seconds
at a
time.
Allow
two
minutes
be
tween cranking intervals.
Crank
the
engine
for 30
seconds
at a
time
to
allow
air trapped
in the
injection pump
to
vent
out the
drain manifold. Observe
the
previous WARNING
and
CAUTION.
HIGH PRESSURE FUEL LINES
WARNING:
THE
INJECTION PUMP SUPPLIES HIGH
PRESSURE
FUEL
OF
APPROXIMATELY
59,000
KPA
(8,000
PSI) TO
EACH INDIVIDUAL INJECTOR
THROUGH
THE
HIGH
PRESSURE
LINES. FUEL
UN
DER
THIS AMOUNT
OF
PRESSURE
CAN
PENE
TRATE
THE
SKIN
AND
CAUSE PERSONAL INJURY. WEAR SAFETY GOGGLES
AND
ADEQUATE PRO
TECTIVE CLOTHING
AND
AVOID CONTACT
WITH
FUEL SPRAY WHEN BLEEDING HIGH
PRESSURE
FUEL LINES.
Page 1480 of 1502
EMISSION
CONTROL SYSTEMS
25 - :
CALIFORNIA VEHICLE EMISSION CONTROL INFORMATION LABEL-TYPICAL
or,
o_ UJ
u_
U
^
>
CO
CQ
o
IMPORTANT
VEHICLE
INFORAAATION
THIS VEHICLE CONFORMS
TO
U.S.
EPA AND STATE
OF
CALIFORNIA REGULATIONS APPLICABLE
TO 1993
MODEL YEAR NEW
LIGHT-DUTY
TRUCKS
AND
MEDIUM-DUTY VEHICLES PROVIDED
THAT
THIS VEHICLE
IS
ONLY INTRODUCED
INTO
COMMERCE FOR
SALE
IN THE
STATE
OF
CALIFORNIA.
*
BASIC
IGNITION TIMING
AND
IDLE FUEL/AIR
MIXTURE HAVE BEEN
PRESET
AT THE
FACTORY.
SEE THE
SERVICE MANUAL
FOR
PROPER
PROCEDURES
AND
OTHER
ADDITIONAL
INFORMATION.
o
ADJUSTMENTS MADE
BY
OTHER
THAN
APPROVED
SERVICE MANUAL PROCEDURES
MAY
VIOLATE
FEDERAL
AND
STATE
LAWS.
CAUTION:
APPLY
PARKING BRAKE
WHEN
SERVICING
VEHICLE.
5.2
LITER
PCR360T5FHB2
PTAPG
SPARK
PLUGS
.035
in.
GAP RC12YC NO ADJUSTMENTS NEEDED
RHC/CO/NOx
STDS.
.50/9.0/1.0
TEE
CONNECTOR
W/ORIFICE
TO
ATMOSPHERE
ROLLOVER
VALVE
W/ORIFICE
/
PCV
VALVE-
TO
CLIMATE
CONTROL,
VEHICLE SPEED
CONTROL,
4X4
AXLE
(WHEN
EQUIPPED)
INTAKE
MANIFOLD"
ORIFICE
—
M
r-
M
EVAP
PURGE
SOLENOID
FILTER
THROTTLE
BODY
FUEL
TANK PRESSURE
RELIEF/
ROLLOVER
VALVE
W/ORIFICE
FUEL
PRESSURE
REGULATOR
1
r—O
O^-CRANKCASE
TO
AIR
CLEANER
APPLICABLE
TO
35
GALLON
FUEL
TANK
ONLY
J9325-23
CANADA VEHICLE EMISSION CONTROL INFORMATION LABEL-ATYPICAL
VEHICLE
EMISSION
CONTROL
INFORAAATION
THIS
VEHICLE
WAS
BUILT
FOR
SALE
IN
CANADA
AND WAS
DESIGNED
TO
MEET
THE
EMISSION
REQUIREMENTS
OF THE
CANADA
MOTOR
VEHICLE
ACT.
IT
WAS NOT
DESIGNED
TO
COMPLY
WITH
THE
REQUIREMENTS
OF
OTHER
COUNTRIES.
'
BASIC
IGNITION TIMING
AND
FUEL
INJECTION
MIXTURE HAVE BEEN
PRESET
AT
THE
FACTORY.
ADJUSTMENTS
SHOULD
NOT
BE
MADE
DURING
ROUTINE
SERVICE.
CAUTION:
APPLY
PARKING BRAKE
WHEN
SERVICING
VEHICLE.
5.2
LITRES
SPARK
PLUGS
0.9
mm GAP
RC12YC
RENSEIGNEMENTS RELATIFS
AU
SYSTEME
ANTIPOLLUTION
LE
PRESENT
VEHICULE
A
ETE
FABRIQUE'
POUR ETRE
VENDU
AU
CANADA
ET
IL
A
ETE
CONCU
DE
MANIERE
A
SE
CON
FORMER
AUX
NORMES
ANTIPOLLUTION
DE LA LOI SUR LA
SECURITE
DES
VEHICULES
AUTOMOBILES
DU
CANADA.
IL
N'EST
PAS
DESTINE'
A SE
CON
FORMER
AUX
NORMES
D'AUTRES
PAYS.
*
LE
CALAGE
DE
L'ALLUMAGE
INITIAL
ET LE
MELANGE
D'INJECTION
D'ESSENCE
ONT
ETC:
PREREGLE'S
A
L'USINE.
N'EFFECTUEZ
AUCUN
REGLAGE
LORS
DE
TRAVAUX
D'ENTRETIEN
REGULIERS.
AVERTISSEMENT:
SERREZ
LE
FREIN
DE
STATIONNEMENT
POUR
FAIRE
L'ENTRETIEN
OU
LA
RE'PARATION
DU
VEHICULE.
5.2
LITRES
,
BOUGIES
ECARTEMENT
0.9 mm
RC12YC
ROLLOVER VALVE W/ORIFICE CLAPET DE DECHARGE AVEC AJUTAGE EVAP PURGE SOLENOID
E'LECTROVALVE
DE
_
FUEL TANK PURGE
DU
FILTRE RESERVOIR
D'ESSENCE
-
A CHARBON ACTIF /
TO CLIMATE CONTROL,
VEHICLE SPEED CONTROL.
4X4 AXLE (WHEN EQUIPPED)
VERS LA COWMAN DE
DE
TEMPERATURE. LE REGULATEUR DE VITESSE, LESSIEU
4X4 (LORSQU'AINSI EQUIPE')
INTAKE MANIFOLD ORIFICE AJUTAGE DE LA TUBULURE D'ADMISSION FUEL TANK PRESSURE RELIEF/
I
ROLLOVER VALVE W/ORIFICE
CLAPET DE DECHARGE
DU
RESERVOIR D'ESSENCE AVEC AJUTAGE FUEL PRESSURE REGULATOR
REGULATEUR DE PRESSION DE CARBURANT CHECK VALVE W/ORIFICE
SOUPAPE
A
DOUBLE EFFET
-
AVEC AJUTAGE AAAP SENSOR
"
CAPTEUR DE PRESSION
ABSOLUE DE LA TUBULURE THROTTLE BODY
CORPS DE PAPILLON APPLICABLE
TO
35
GALLON FUEL TANK ONLY
UNIQUEMENT APPLICABLE
AU
RESERVOIR D'ESSENCE DE
132
L
Page 1481 of 1502
2i
- 4
EMISSION
CONTROL
SYSTEMS
•
VACUUM
HOSE
ROUTING
SCHEMATICS
The following vacuum hose routing schematics
are used
as
examples only.
If
there
are any
differ
ences between these schematics
and the
Vehicle
Emission Control Information (VECI) label schemat
ics,
those shown
on the
VECI label should
be
used.
ENGINE
VACUUM
SCHEMATIC-3.9U5.2L/5.9L
LDC
ENGINES
TO ATMOSPHERE
i
TRANSDUCER
FUEL
TANK
PRESSURE
RELIEF
ROLLOVER VALVE
W/ORIFICE
EVAP
CANISTER
TO CLIMATE CONTROL,
CRUISE
CONTROL,
4WD
AXLE
(WHEN
EQUIPPED) INTAKE
MANIFOLD
ORIFICE ENGINE
VALVE
COVER FUEL PRESSURE
REGULATOR
M
P
= MANIFOLD VACUUM
= PORTED VACUUM
"8^
EGR
VALVE
EVAP PURGE SOLENOID MAP
SENSOR
CHECK VALVE W/ORIFICE
CRANKCASE
BREATHER
TO
AIR
CLEANER
ENGINE VALVE
COVER TO BRAKE
BOOSTER FRONT
OF
VEHICLE
J9325-13
