EXCESSIVE WHITE SMOKE
POSSIBLE CAUSE CORRECTION
Fuel injector protrusion not correct. Check washer (shim) at bottom of fuel injector for
correct thickness. (Refer to 14 - FUEL SYSTEM/FUEL
INJECTION/FUEL INJECTOR - INSTALLATION)
Fuel injection pump malfunctioning. A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information.
Fuel supply side restriction to transfer pump. Refer to Fuel Transfer Pump Pressure (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY/FUEL TRANSFER
PUMP - DIAGNOSIS AND TESTING)
Fuel transfer (lift) pump malfunctioning. A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information. Also refer to Fuel
Transfer Pump Pressure Testing (Refer to 14 - FUEL
SYSTEM/FUEL DELIVERY/FUEL TRANSFER PUMP -
DIAGNOSIS AND TESTING).
Intake/Exhaust valve adjustments not correct (too tight). (Refer to 9 - ENGINE/CYLINDER HEAD/INTAKE/
EXHAUST VALVES & SEATS - STANDARD
PROCEDURE).
Intake manifold air temperature sensor malfunctioning. A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information.
Intake manifold heater circuit not functioning correctly in
cold weather.A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information. Also check heater
elements for correct operation.
Intake manifold heater elements not functioning
correctly in cold weather.A diagnostic trouble code WILL NOT BE SET if heater
elements are malfunctioning. Refer to NTC tests in
Powertrain Diagnostic Procedures Information.
Internal engine damage (scuffed cylinder). Analyze engine oil and inspect oil filter to locate area of
probable damage.
Restriction in fuel supply side of fuel system. Refer to Fuel Transfer Pump Pressure Testing (Refer to
14 - FUEL SYSTEM/FUEL DELIVERY/FUEL
TRANSFER PUMP - DIAGNOSIS AND TESTING).
Static timing incorrect. A DTC should have been set. If so, (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY/FUEL INJECTION
PUMP - DIAGNOSIS AND TESTING).
EXCESSIVE BLUE SMOKE
POSSIBLE CAUSE CORRECTION
Dirty air cleaner or restricted turbocharger intake duct. Check Filter MinderTat air filter housing. (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM/AIR CLEANER
ELEMENT - REMOVAL).
Air leak in boost system between turbocharger
compressor outlet and intake manifold.Service air charge system..
Obstruction in exhaust manifold. Remove exhaust manifold and inspect for blockage
(Refer to 9 - ENGINE/MANIFOLDS/EXHAUST
MANIFOLD - REMOVAL).
Restricted turbocharger drain tube. Remove turbocharger drain tube and remove
obstruction.
Crankcase ventilation system plugged. Inspect crankcase breather and vent tube for sludge
formation or obstructions.
9 - 236 ENGINE 5.9L DIESELBR/BE
ENGINE 5.9L DIESEL (Continued)
Measure the valve spring free length and maxi-
mum inclination (Fig. 44).
Test valve spring force with tool C-647 (Fig. 45).
INSTALLATION
(1) Install new valve seals. The yellow springs are
for the intake valves and the green seals are for the
exhaust valves.(2) Install the valves in their original postion. The
exhaust valves are identified by a dimple on the
valve head (Fig. 46).
(3) Install the valve springs and retainer.
(4) Install the valve spring compressor tool 8319±A
as shown in (Fig. 37) and (Fig. 38).
(5) Compress the valve springs and install the
valve retaining locks (Fig. 39).
(6) Remove the compressor and repeat the proce-
dure on the remaining cylinders.
(7) Install the injector clamp and hold down bolts
and tighten to 10 N´m (89 in. lbs.) torque.
(8) Install the cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
STANDARD PROCEDUREÐVALVE LASH
ADJUSTMENT AND VERIFICATION
NOTE: To obtain accurate readings, valve lash mea-
surements AND adjustments should only be per-
formed when the engine coolant temperature is less
than 60É C (140É F).
The 24±valve overhead system is a ªlow-mainte-
nanceº design. Routine adjustments are no longer
necessary, however, measurement should still take
place when trouble-shooting performance problems,
or upon completion of a repair that includes removal
and installation of the valve train components.
(1) Disconnect battery negative cables.
Fig. 44 Measure Valve Spring Free Length and Max.
Inclination
VALVE SPRING FREE LENGTH
47.75 mm (1.88 in.)
MAX INCLINATION
1.5 mm (.059 in.)
Fig. 45 Testing Valve Spring with Tool C-647
1 - SPECIAL TOOL C-647
VALVE SPRING FORCE 35.33 mm @ 339.8 N (1.39 IN. @76.4
lbs.)
Fig. 46 Valve Identification
1 - INTAKE VALVES
2 - EXHAUST VALVES
9 - 256 ENGINE 5.9L DIESELBR/BE
INTAKE/EXHAUST VALVES & SEATS (Continued)
(2) Remove cylinder head cover (Fig. 47) (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Remove the crankcase breather and vapor can-
ister (Fig. 48).
(4) Using the crankshaft barring tool #7471±B,
rotate the engine and align the pump gear mark with
the top dead center (TDC) mark on the gear housing
cover (Fig. 49).
(5) With the engine in this position (pump gear
mark at 12 o'clock), valve lash can be measured at
the following rocker arms:INTAKE 1±2±4 /
EXHAUST 1±3±5. Measure the valve lash by insert-
ing a feeler gauge between the rocker arm socket and
crosshead (Fig. 50). Refer to VALVE LASH LIMIT
CHART for the correct specifications. If the measure-
ment fallswithinthe limits, adjustment/resettingis
notnecessary. If measurement finds the lashout-
sideof the limits, adjustment/resettingisrequired.
VALVE LASH LIMIT CHART
INTAKE EXHAUST
0.152 mm ( 0.006 in.)
MIN.0.381 mm (0.015 in.)
MIN.
0.381 mm (0.015 in.)
MAX.0.762 mm (0.030 in.)
MAX.
note:
If measured valve lash falls within these
specifications, no adjustment/reset is necessary.
Engine operation within these ranges has no
adverse affect on performance, emissions, fuel
economy or level of engine noise.
Fig. 47 Cylinder Head Cover and Gasket
1 - BOLT (5)
2 - GASKET
3 - ªTOP FRONTº
4 - ISOLATOR (5)
Fig. 48 Crankcase Breather Vapor Canister
1 - ENGINE FRONT COVER STUD
2 - STRAP
3 - VAPOR CANISTER
4 - NUT
5 - CAP
6 - CRANKCASE BREATHER
7 - CLAMP
8 - HOSE
BR/BEENGINE 5.9L DIESEL 9 - 257
INTAKE/EXHAUST VALVES & SEATS (Continued)
(6) If adjustment/resetting is required, loosen the
lock nut on rocker arms and turn the adjusting screw
until the desired lash is obtained:
²INTAKE0.254 mm (0.010 in.)
²EXHAUST0.508 mm (0.020 in.)Tighten the lock
nut and re-check the valve lash.
(7) Using the crankshaft barring tool, rotate the
crankshaftone revolution (360É) to align the pump
gear mark to the 6 o'clock position in relation to the
TDC mark on the gear housing cover (Fig. 49).(8) With the engine in this position (pump gear
mark at 6 o'clock), valve lash can be measured at the
remaining rocker arms:INTAKE 3±5±6 / EXHAUST
2±4±6. Use the same method as above for determin-
ing whether adjustment is necessary, and adjust
those that are found to be outside of the limits.
(9) Install the cylinder head cover (Fig. 47) (Refer
to 9 - ENGINE/CYLINDER HEAD/CYLINDER
HEAD COVER(S) - INSTALLATION).
(10) Install the fuel pump gear access cover.
(11) Connect the battery negative cables.
REMOVAL
(1) Disconnect the battery negative cables.
(2) Remove the cylinder head cover (Fig. 52) (Refer
to 9 - ENGINE/CYLINDER HEAD/CYLINDER
HEAD COVER(S) - REMOVAL).
(3) Remove the rocker arms and crossheads (Fig.
53) from the cylinder(s) to be serviced. Mark each
component so they can be installed in their original
position.
(4) Remove the crankcase breather vapor canister
and breather housing (Fig. 55).
(5) Using the crankshaft barring tool #7471±B
(Fig. 51), rotate the engine to line up the mark on
the pump gear with the TDC mark on the cover.At
this engine position, cylinders #1 and #6 can be
serviced.
(6) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(7) With the fuel injection pump gear mark aligned
at TDC, add a paint mark anywhere on the gear
housing cover next to the crankshaft damper. Place
another mark on the vibration damper in alignment
with the mark you just made on the cover.
(8) Divide the crankshaft damper into three
equally sized segments as follows:
(a) Using a tape measure, measure the circum-
ference of the crankshaft damper and divide the
measurement by three (3).
(b) Measure that distance in a counter-clockwise
direction from the first balancer mark and place
another mark on the balancer.
(c) From the second damper mark, again mea-
sure in a counter-clockwise direction and place a
mark on the damper at the same distance you
measured when placing the second damper mark.
Fig. 49 Fuel Pump Gear Timing Mark Orientation
1 - MEASURE/ADJUST INTAKE 1, 2, 4 EXHAUST 1, 3, 5
2 - MEASURE/ADJUST INTAKE 3, 5, 6 EXHAUST 2, 4, 6
Fig. 50 Measuring Valve Lash
1 - INTAKE
2 - FEELER GAUGE
3 - EXHAUST
9 - 258 ENGINE 5.9L DIESELBR/BE
INTAKE/EXHAUST VALVES & SEATS (Continued)
(4)Verify valve lash adjustment (Refer to 9 -
ENGINE/CYLINDER HEAD/INTAKE/EXHAUST
VALVES & SEATS - STANDARD PROCEDURE).
(5) Install cylinder head cover and reusable gasket
(Fig. 52) (Refer to 9 - ENGINE/CYLINDER HEAD/
CYLINDER HEAD COVER(S) - INSTALLATION).
(6) Install the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(7) Connect battery negative cables.
ROCKER ARM / ADJUSTER
ASSY
DESCRIPTION
The 24±valve overhead system incorporates rocker
arms that are designed to allow fuel injector service
without removing the rocker arms and pedestals. The
unique intake and exhaust rocker arms have their
own rocker shafts and are lubricated by passages
intersecting the cylinder block main oil rifle. Cross-
heads are used (Fig. 58), which allow each rocker
arm to operate two valves.
The solid push rods are hardened at the rocker
arm and tappet contact areas for superior strength
and durability.
REMOVAL
(1) Disconnect the battery negative cables.
(2) Remove cylinder head cover (Fig. 59) (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Remove the rocker arm/pedestal fasteners (Fig.
60) and remove rocker arm and pedestal from cylin-
der head. Mark the arms and pedestals so they can
be installed in their original position.
CAUTION: When removing the rocker arms, the
sockets (Fig. 61) may come loose and fall into the
engine. Make sure they stay with the arm upon
removal/installation.
(4) Lift the push rod(s) up and out of the engine
(Fig. 62). Mark them so they can be installed in their
original position.
NOTE: The #5 cyl. exhaust and #6 cyl. intake and
exhaust push rods must be raised through the pro-
vided cowl panel access holes.
(5) Lift the crosshead(s) off of the valve stems.
Mark them so they can be installed in their original
position.
Fig. 58 Overhead System Components
1 - EXHAUST ROCKER ARM
2 - INTAKE ROCKER ARM
3 - ROCKER SHAFT
4 - SOCKET
5 - ADJUSTING SCREW LOCK NUT
6 - PUSH ROD
7 - PEDESTAL
8 - CROSSHEAD
Fig. 59 Cylinder Head CoverÐRemoval/Installation
1 - BOLT (5)
2 - GASKET
3 - ªTOP FRONTº
4 - ISOLATOR (5)
BR/BEENGINE 5.9L DIESEL 9 - 261
INTAKE/EXHAUST VALVES & SEATS (Continued)
Push Rods
Inspect the push rod ball and socket for signs of
scoring. Check for cracks where the ball and the
socket are pressed into the tube (Fig. 65).
Roll the push rod on a flat work surface with the
socket end hanging off the edge (Fig. 66). Replace
any push rod that appears to be bent.
Crossheads
Inspect the crossheads for cracks and/or excessive
wear on rocker lever and valve tip mating surfaces
(Fig. 67).
INSTALLATION
(1) If previously removed, install the push rods in
their original location.Verify that they are seated
in the tappets.
(2) Lubricate the valve tips and install the cross-
heads in their original locations.
(3) Lubricate the crossheads and push rod sockets
and install the rocker arms and pedestals (Fig. 60) intheir original locations. Tighten bolts to 36 N´m (27
ft. lbs.) torque.
(4)Verify valve lash adjustment (Refer to 9 -
ENGINE/CYLINDER HEAD/INTAKE/EXHAUST
VALVES & SEATS - STANDARD PROCEDURE).
(5) Install cylinder head cover and reusable gasket
(Fig. 59) (Refer to 9 - ENGINE/CYLINDER HEAD/
CYLINDER HEAD COVER(S) - INSTALLATION).
(6) Connect battery negative cables.
ENGINE BLOCK
STANDARD PROCEDURE-CYLINDER BLOCK
REFACING
(1) The combustion deck can be refaced twice. The
first reface should be 0.25 mm (0.0098 inch). If addi-
tional refacing is required, an additional 0.25 mm
(0.0098 inch) can be removed. Total allowed refacing
is 0.50 mm (0.0197 inch) - (Fig. 68).
Fig. 64 Measuring Rocker Arm Shaft
ROCKER ARM SHAFT (MIN.)
21.965 mm (.865 in.)
Fig. 65 Inspecting Push Rod for Cracks
Fig. 66 Inspecting Push Rod for Flatness
Fig. 67 Inspecting Crosshead for Cracks
BR/BEENGINE 5.9L DIESEL 9 - 263
ROCKER ARM / ADJUSTER ASSY (Continued)
(10)Verify valve lash adjustment (Refer to 9 -
ENGINE/CYLINDER HEAD/INTAKE/EXHAUST
VALVES & SEATS - STANDARD PROCEDURE).
(11)
Install the cylinder head cover and reusable gas-
ket (Fig. 85) (Refer to 9 - ENGINE/CYLINDER HEAD/
CYLINDER HEAD COVER(S) - INSTALLATION).
(12) Install gear housing cover (Refer to 9 -
ENGINE/VALVE TIMING/GEAR HOUSING COVER
- INSTALLATION).
(13) Install the crankshaft damper (Fig. 83) (Refer
to 9 - ENGINE/ENGINE BLOCK/VIBRATION
DAMPER - INSTALLATION).
(14) Install the fan support/hub assembly (Fig. 82)
and tighten bolts to 24 N´m (18 ft. lbs.) torque.
(15) Install the crankcase breather housing (Refer
to 9 - ENGINE - INSTALLATION).
(16) Install the charge air cooler (with a/c con-
denser and auxiliary transmission oil cooler, if
equipped) and tighten the mounting bolts to 2 N´m
(17 in. lbs.) torque.
(17) Connect charge air cooler inlet and outlet
pipes. Tighten clamps to 10 N´m (100 in. lbs.) torque.
(18) Install the radiator upper support panel.
(19) Close radiator petcock and lower the radiator
into the engine compartment. Tighten the mounting
bolts to 11 N´m (95 in. lbs.) torque.
(20) Raise vehicle on hoist.
(21)
Connect radiator lower hose and install clamp.
(22) Connect transmission auxiliary oil cooler lines
(if equipped).
(23) Lower vehicle.
(24) Install the fan shroud and tighten the mount-
ing screws to 6 N´m (50 in. lbs.) torque.(25) Install the viscous fan/drive assembly (Refer
to 7 - COOLING/ENGINE/RADIATOR FAN -
INSTALLATION).
(26) Install the coolant recovery and windshield
washer fluid reservoirs to the fan shroud.
(27) Connect the coolant recovery hose to the radi-
ator filler neck.
(28) Install the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(29) Install the front bumper assembly (Refer to 13
- FRAMES & BUMPERS/BUMPERS/FRONT
BUMPER - INSTALLATION).
(30) Add engine coolant (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(31) Charge A/C system with refrigerant (if A/C
equipped) (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - STANDARD PROCEDURE).
(32) Connect the battery negative cables.
(33) Start engine and check for engine oil and cool-
ant leaks.
CONNECTING ROD BEARINGS
STANDARD PROCEDUREÐCONNECTING ROD
BEARING AND CRANKSHAFT JOURNAL
CLEARANCE
Measure the connecting rod bore with the bearings
installed and the bolts tightened to 100 N´m (73 ft.
lbs.) torque.
Record the smaller diameter.
Measure the diameter of the rod journal at the
location shown (Fig. 99). Calculate the average diam-
eter for each side of the journal.
The clearance is the difference between the con-
necting rod bore (smallest diameter) and the average
diameter for each side of the crankshaft journal.
CONNECTING ROD JOURNAL DIAMETER
LIMITS CHART
DESCRIPTION MEASUREMENT
CRANKSHAFT ROD
JOURNAL DIAMETERMINIMUM 68.962 mm
(2.715 in.)
MAXIMUM 69.013 mm
(2.717 in.)
OUT-OF-ROUND MAXIMUM 0.050 mm
(0.002 in.)
TAPER MAXIMUM 0.013 mm
(0.0005 in.)
BEARING CLEARANCE MAXIMUM 0.089 mm
(0.0035 in.)
Fig. 98 Camshaft Backlash and End Clearance
1 - CAMSHAFT GEAR
2 - CAMSHAFT GEAR BACKLASH
3 - CAMSHAFT GEAR CLEARANCE
BACKLASH Ð 0.152Ð0.33 mm
(0.006Ð0.013 inch)
CLEARANCE Ð 0.1Ð0.46 mm
(0.004Ð0.0182 inch)
9 - 274 ENGINE 5.9L DIESELBR/BE
CAMSHAFT & BEARINGS (IN BLOCK) (Continued)
NOTE: A new grommet should be used when ever
the rod is disconnected from the lever.
(3) Remove the shipping lock pin if necessary.
(4) Install the column through the floor pan.
(5) Position the column bracket breakaway cap-
sules on the mounting studs. Install, butloose
assemblethe two upper bracket nuts.
(6) With the front wheels in the straight-ahead
position. Align steering column shaft to the coupler.
Install anewpinch bolt and tighten to 49 N´m (36
ft. lbs.).
(7) Clip the wiring harness on the steering column.
Connect the multi- function switch wiring and
tighten with 7mm socket.
(8) Install the upper fixed shroud.
(9) Be sure both breakaway capsules are fully
seated in the slots in the column support bracket.
Pull the column rearward then tighten upper bracket
nuts to 12 N´m (105 in. lbs.).
(10) Tighten the toe plate to floor pan attaching
nuts to 22.5 N´m (200 in. lbs.).
(11) Install the wiring connections to the column.
Install the lower fixed shroud.(12) Column shift vehicles, install the PRNDL
driver cable. Place shifter in Park position. If indica-
tor needs adjusting, turn thumb screw on cable
retainer to adjust cable.
(13) Install the lock housing shrouds. Install the
tilt lever (if equipped).
(14) Install the knee blocker and steering column
opening cover, (Refer to 23 - BODY/INSTRUMENT
PANEL/STEERING COLUMN OPENING COVER -
INSTALLATION).
(15) Install steering wheel and tighten nut to 61
N´m (45 ft. lbs.), (Refer to 19 - STEERING/COL-
UMN/STEERING WHEEL - INSTALLATION).
(16) Install the airbag, (Refer to 8 - ELECTRICAL/
RESTRAINTS/DRIVER AIRBAG - INSTALLATION).
(17) Column shift vehicles, connect the shift link
rod to the transmission shift lever. Use multi-purpose
lubricant, or an equivalent product, to aid the instal-
lation.
(18) Install the battery ground (negative) cable.
(19) Verify operation of the automatic transmission
shift linkage and adjust as necessary, (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC -
44RE/GEAR SHIFT CABLE - ADJUSTMENTS).
SPECIFICATIONS
TORQUE CHART
TORQUE SPECIFICATIONS
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Steering Wheel
Nut61 45 Ð
Steering Coupler
Bolt49 36 Ð
Steering Column
Upper Bracket12 Ð 105
Steering Column
Toe Plate23 Ð 200
KEY-IN IGNITION SWITCH
DESCRIPTION
The key-in ignition switch is integral to the igni-
tion switch, which is mounted on the right side of the
steering column. It closes a path to ground for the
Central Timer Module (CTM) when the ignition key
is inserted in the ignition lock cylinder and thedriver door ajar switch is closed (driver door is open).
The key-in ignition switch opens the ground path
when the key is removed from the ignition lock cyl-
inder. The ground path is also opened when the
driver door ajar switch is open (driver door is closed).
The key-in ignition switch cannot be repaired and,
if faulty or damaged, the entire ignition switch must
be replaced,(Refer to 19 - STEERING/COLUMN/IG-
NITION SWITCH - REMOVAL).
BR/BECOLUMN 19 - 9
COLUMN (Continued)