
(b) Install the rear line bundle (cyls. #3, 5, and
6), and tighten the threads at the head and pump
by hand.
(c) Torque the connections at the cylinder head
first. Torque connections to 38 N´m (28 ft. lbs.).
(d) Torque the line connections at the injection
pump to 24 N´m (18 ft. lbs.).
(e) Install the front line bundle (cyls. #1, 2, and
4) following the same procedure used for the rear
line bundle.
(f) Torque the connections at the cylinder head
first. Torque connections to 38 N´m (28 ft. lbs.).
(g) Torque the line connections at the injection
pump to 24 N´m (18 ft. lbs.).
(h) Install the injection line support bracket to
intake cover/cylinder head bolts and torque to 24
N´m (18 ft. lbs.).
(16) Install the engine lift bracket at the rear of
cylinder head. Torque to 77 N´m (57 ft. lbs.).
(17) Install the fuel filter to injection pump low
pressure line. Inspect and replace sealing washers if
necessary. Torque banjo bolts to 24 N´m (18 ft. lbs.).
(18) Using new gaskets, install the intake grid
heater and air inlet housing. Torque bolts to 24 N´m
(18 ft. lbs.).(19) Connect the APPS connector (Fig. 17).
(20) Install the APPS assembly. to the cylinder
head bracket and torque bolts to 12 N´m (105 in.
lbs.).
(21) Install the throttle linkage cover (Fig. 15).
(22) Install the charge air cooler-to-air inlet hous-
ing duct assembly. Torque all clamps to 11 N´m (100
in. lbs.).
(23) Connect intake grid heater wires.
(24) Fasten engine harness to front of cylinder
head with bolt.
(25) Install engine harness ground wire and torque
bolt to 24 N´m (18 ft. lbs.).
(26) Connect engine coolant temperature sensor
connector.
(27) Connect radiator upper hose to thermostat
housing.
(28) Install generator upper bracket and torque
bolts to 41 N´m (31 ft. lbs.).
(29) Install accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(30) Install exhaust manifold/turbocharger assem-
bly. and start all bolts/spacers by hand. Torque bolts
to 43 N´m (32 ft. lbs.).
(31) Connect turbocharger oil drain tube.
(32) Perform the turbocharger pre-lube procedure.
Refer to Group 11, Exhaust System and Turbo-
charger for the correct procedure.
(33) Connect the turbocharger oil supply line.
(34) Install air cleaner housing and duct.
(35) Raise vehicle on hoist.
(36) Install exhaust pipe to turbocharger elbow
(Fig. 14). Torque bolts to 34 N´m (25 ft. lbs.).
(37) Lower vehicle.
(38) Fill engine coolant (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(39) Start engine and check for leaks.
CYLINDER HEAD COVER(S)
REMOVAL
(1) Disconnect both battery negative cables.
(2) Loosen the five (5) cylinder head cover bolts
(Fig. 34) . Remove the front three bolts and leave the
rear two bolts in the cover.
(3) Lift cover off of cylinder head.
CLEANING
Using a suitable solvent, Clean and dry gasket
mating surfaces on cylinder head and cover. Wipe
gasket dry and inspect for re-use.
Fig. 33 Cylinder Head Cover Installation
1 - BOLT (5)
2 - GASKET
3 - ªTOP FRONTº
4 - ISOLATOR (5)
BR/BEENGINE 5.9L DIESEL 9 - 137
CYLINDER HEAD (Continued)

CRANKSHAFT MAIN JOURNAL DIAMETER
CHART
ITEM SPECIFICATION
MINIMUM DIAMETER 82.962 mm (3.2662 in.)
MAXIMUM DIAMETER 83.013 mm (3.2682 in.)
Calculate the main bearing journal to bearing
clearance. the clearance specifications are 0.119 mm
(0.00475 inch). If the crankshaft journal is within
limits, replace the main bearings. If not within spec-
ifications, grind the crankshaft to next size and use
oversize bearings.
CRANKSHAFT OIL SEAL -
FRONT
REMOVAL
(1) Disconnect both battery negative cables.
(2) Raise vehicle on hoist.
(3) Partially drain engine coolant into container
suitable for re-use (Refer to 7 - COOLING - STAN-
DARD PROCEDURE).
(4) Lower vehicle.
(5) Remove radiator upper hose.
(6) Disconnect coolant recovery bottle from radia-
tor filler neck and lift bottle off of fan shroud.
(7) Disconnect windshield washer pump supply
hose and electrical connections and lift washer bottle
off of fan shroud.
(8) Remove the fan shroud-to-radiator mounting
bolts.
(9) Remove viscous fan/drive assembly.The fan
drive nut has left handed threads.(Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - REMOVAL).
(10) Remove cooling fan shroud and fan assembly
from the vehicle.
(11) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(12) Remove the cooling fan support/hub from the
front of the engine (Fig. 103).
(13) Raise the vehicle on hoist.
(14) Remove the crankshaft damper (Fig. 104).
(15) Remove the gear cover-to-housing bolts and
gently pry the cover away from the housing, taking
care not to mar the gasket surfaces.
(16) Support the cover on a flat work surface with
wooden blocks (Fig. 105), and using a suitable punch
and hammer, drive the old seal out of the cover from
the outside of the cover (Fig. 105).
INSTALLATION
(1) Clean cover and housing gasket mating sur-
faces. Use a suitable scraper and be careful not todamage the gear housing surface, since it is alumi-
num. Remove any old sealer from the oil seal bore.
Thoroughly clean the front seal area of the crank-
shaft. The seal lip and the sealing surface on the
crankshaft must be free from all oil residue to pre-
vent seal leaks.
(2) Inspect the gear housing and cover for cracks
and replace if necessary. Carefully straighten any
bends or imperfections in the gear cover with a ball-
peen hammer on a flat surface. Inspect the crank-
shaft front journal for any grooves or nicks that
would affect the integrity of the new seal.
(3) Apply a bead of MopartStud & Bearing Mount
to the outside diameter of the seal. Do not lubricate
the inside diameter of the new seal.
Fig. 103 Fan Support Hub AssemblyÐRemoval/
Installation
1 - FAN SUPPORT/HUB
2 - FAN PULLEY
Fig. 104 Crankshaft DamperÐRemoval/Installation
1 - DAMPER
2 - BOLT
9 - 160 ENGINE 5.9L DIESELBR/BE
CRANKSHAFT MAIN BEARINGS (Continued)

(6) Install #10 sheet metal screws in the drilled
holes and remove the rear seal with a slide hammer
(Fig. 108).
INSTALLATION
CAUTION: The seal lip and the sealing surface on
the crankshaft must be free from all oil residue to
prevent seal leaks. The crankshaft and seal sur-
faces must be completely dry when the seal is
installed. Use a soap and water solution on outside
diameter of seal to ease assembly.
(1) Clean the crankshaft journal with a suitable
solvent and dry with a clean shop towel or com-
pressed air. Wipe the inside bore of the crankshaft
seal retainer with a clean shop towel.
(2) Inspect the crankshaft journal for gouges,
nicks, or other imperfections. If the seal groove in the
crankshaft is excessively deep, install the new seal
1/8º deeper into the retainer bore, or obtain a crank-
shaft wear sleeve that is available in the aftermar-
ket.
(3) Install the seal pilot, provided in the replace-
ment kit, onto the crankshaft.
(4) Using the provided alignment/installation tool,
start the seal over the pilot and into the retainer by
hand.
(5) Using a ball peen hammer, strike the tool at
the 12, 3, 6, and 9 o'clock positions until the align-
ment tool bottoms out on the retainer (Fig. 109).
(6) Remove the seal pilot.
(7) Install the flywheel or converter drive plate.
Tighten the bolts to 137 N´m (101 ft. lbs.) torque.(8) Install the clutch cover and disc (if equipped)
(Refer to 6 - CLUTCH/CLUTCH DISC - INSTALLA-
TION).
(9) Install the transmission and transfer case (if
equipped).
(10) Lower vehicle.
(11) Connect battery negative cables.
(12) Check engine oil level and adjust, if necessary.
(13) Start engine and check for oil leaks.
CRANKSHAFT REAR OIL SEAL
RETAINER
REMOVAL
(1) Disconnect the battery negative cables.
(2) Raise vehicle on hoist.
(3) Remove the oil pan drain plug and drain the
engine oil. Re-install plug and torque to 60 N´m (44
ft. lbs.) torque.
(4) Remove transmission and transfer case (if
equipped) from vehicle.
(5) Remove flywheel or torque converter drive
plate.
(6) Disconnect starter cables from starter motor.
(7) Remove starter motor (Refer to 8 - ELECTRI-
CAL/STARTING/STARTER MOTOR - REMOVAL)
and transmission adapter plate assembly.
(8) Disconnect cables from starter motor.
(9) Remove the eight flywheel housing to block
bolts and remove housing and starter motor as an
assembly.
Fig. 108 Crankshaft Rear Seal Removal
1 - NO. 10 SCREW
2 - REAR SEAL
3 - CRANKSHAFT
4 - SLIDE HAMMER
Fig. 109 Seal Installation Using Alignment Tool and
Hammer
1 - SEAL PILOT TOOL
2 - INSTALLATION TOOL
3 - SEAL
4 - RETAINER
9 - 162 ENGINE 5.9L DIESELBR/BE
CRANKSHAFT OIL SEAL - REAR (Continued)

INSTALLATION
(1) With engine raised SLIGHTLY, position the
engine mount to the block. Install the bolts and
tighten to 149 N´m (110 ft. lbs.) torque.
(2) Install the thru-bolt into the engine mount.
(3) Lower the engine while guiding the mount and
thru-bolt into the frame mounted support cushion
brackets (Fig. 146).
(4) Install the thru-bolt nut and tighten the nut to
88 N´m (65 ft. lbs.) torque.
(5) Passenger side: Install the two (2) transmission
oil cooler bracket to mount bolts. Tighten the bolts to
47 N´m (35 ft. lbs.) torque.
(6) Remove lifting fixture.
(7) Lower the vehicle.
(8) Install the viscous fan/drive assembly (Refer to
7 - COOLING/ENGINE/RADIATOR FAN - INSTAL-
LATION).
(9) Connect the battery negative cables.
REAR MOUNT
REMOVAL
(1) Raise the vehicle on a hoist.
(2) Position a transmission jack in place.
(3) Remove support cushion stud nuts (Fig. 147).
(4) Raise rear of transmission and engine
SLIGHTLY.
(5) Remove the bolts holding the support cushion
to the transmission support bracket. Remove the sup-
port cushion.
(6) If necessary, remove the bolts holding the
transmission support bracket to the transmission.
INSTALLATION
(1) If removed, position the transmission support
bracket to the transmission. Install new attaching
bolts and tighten to 102 N´m (75 ft. lbs.) torque.
(2) Position support cushion to transmission sup-
port bracket. Install stud nuts and tighten to 47 N´m
(35 ft. lbs.) torque.
(3) Using the transmission jack, lower the trans-
mission and support cushion onto the crossmember
(Fig. 50) .
(4) Install the support cushion bolts and tighten to
47 N´m (35 ft. lbs.) torque.
(5) Remove the transmission jack.
(6) Lower the vehicle.
LUBRICATION
DESCRIPTION
NOTE: Refer to (Fig. 148) and (Fig. 149) for circuit
illustrations.
A gear driven gerotor type oil pump is mounted
behind the front gear cover in the lower right portion
on the engine.
OPERATION
A gerotor style oil pump draws oil from the crank-
case through the suction tube and delivers it through
the block where it enters the oil cooler cover and
pressure regulator valve. When oil pressure exceeds
449 kPa (65 PSI), the valve opens exposing the dump
port, which routes excess oil back to the oil sump.
At the same time, oil is directed to a cast in pas-
sage in the oil cooler cover, leading to the oil cooler
element. As the oil travels through the element
plates, it is cooled by engine coolant traveling past
the outside of the plates. It is then routed to the oil
filter head and through a full flow oil filter. If a
plugged filter is encountered, the filter by-pass valve
opens, allowing unfiltered oil to lubricate the engine.
This condition can be avoided by frequent oil and fil-
ter changes, per the maintenance schedules found in
the owners manual. The by-pass valve is calibrated
to open when it sees a pressure drop of more than
344 kPa (50 psi) across the oil filter.
The oil filter head then divides the oil between the
engine and the turbocharger. The turbocharger
receives filtered, cooled and pressurized oil through a
supply line from the filter head. The oil lubricates
the turbocharger and returns to the pan by way of a
drain tube connecting the bottom of the turbocharger
to a pressed in tube in the cylinder block.
Oil is then carried across the block to an angle
drilling which intersects the main oil rifle. The main
Fig. 146 Positioning Engine Front Mounts
1 - ENGINE SUPPORT BRACKET/CUSHION
2 - SUPPORT CUSHION BRACKET
9 - 174 ENGINE 5.9L DIESELBR/BE
FRONT MOUNT (Continued)

(3) Always check the condition of the used oil. This
can give you an indication of engine problems that
might exist.
²Thin, black oil indicates fuel dilution.
²Milky discoloration indicates coolant dilution.
(4) Clean the area around the oil filter head.
Remove the filter (Refer to 9 - ENGINE/LUBRICA-
TION/OIL FILTER - REMOVAL).
(5) Install new oil filter (Refer to 9 - ENGINE/LU-
BRICATION/OIL FILTER - INSTALLATION).
(6) Clean the drain plug and the sealing surface of
the pan. Check the condition of the threads and seal-
ing surface on the oil pan and drain plug.
(7) Install the drain plug. Tighten the plug to 50
N´m (37 ft. lbs.) torque.
(8) Use only High-Quality Multi-Viscosity lubricat-
ing oil in the Cummins Turbo Diesel engine. Choose
the correct oil for the operating conditions (Refer to
LUBRICATION & MAINTENANCE/FLUID TYPES -
DESCRIPTION).
(9) Fill the engine with the correct grade of new oil
(Refer to LUBRICATION & MAINTENANCE/FLUID
CAPACITIES - SPECIFICATIONS).
(10) Start the engine and operate it at idle for sev-
eral minutes. Check for leaks at the filter and drain
plug.
(11) Stop engine. Wait several minutes to allow the
oil to drain back to the pan and check the level
again.
USED ENGINE OIL DISPOSAL Care should be
exercised when disposing of used engine oil after
it has been drained from a vehicle's engine.
OIL COOLER & LINES
CLEANING AND INSPECTION
Clean the sealing surfaces.
Apply 483 kPa (70 psi) air pressure to the element
to check for leaks. If the element leaks, replace the
element.
OIL FILTER
REMOVAL
(1) Clean the area around the oil filter head.
Remove the filter using a 90-95 mm filter wrench.
(2) Clean the gasket surface of the filter head. The
filter canister O-Ring seal can stick on the filter
head. Make sure it is removed.
INSTALLATION
(1) Fill the oil filter element with clean oil before
installation. Use the same type oil that will be used
in the engine.
(2) Apply a light film of lubricating oil to the seal-
ing surface before installing the filter.
CAUTION: Mechanical over-tightening may distort
the threads or damage the filter element seal.
(3) Install the filter until it contacts the sealing
surface of the oil filter adapter. Tighten filter an
additional ó turn.
OIL PAN
REMOVAL
(1) Disconnect the battery negative cables.
(2) Raise vehicle on hoist.
(3) Remove transmission and transfer case (if
equipped).
(4) Remove flywheel.
(5) Disconnect starter cables from starter motor.
(6) Remove starter motor (Refer to 8 - ELECTRI-
CAL/STARTING/STARTER MOTOR - REMOVAL)
and transmission adapter plate assembly.
WARNING: HOT OIL CAN CAUSE PERSONAL
INJURY.
(7) Drain the engine oil (Refer to 9 - ENGINE/LU-
BRICATION/OIL - STANDARD PROCEDURE).
(8) Install the oil pan drain plug with a new seal-
ing washer and tighten to 60 N´m (44 ft. lbs.) torque.
(9) Remove oil pan bolts, break the pan to block
seal, and lower pan slightly and remove oil suction
tube fasteners.
(10) Remove oil pan and suction tube (Fig. 151).
CLEANING
Remove all gasket material from the oil pan and
cylinder block sealing surfaces. Extra effort may be
required around T-joint areas. Clean oil pan and
flush suction tube with a suitable solvent.
INSPECTION
Inspect the oil pan, suction tube, and tube braces
for cracks and damage. Replace any defective compo-
nent. Inspect the oil drain plug and drain hole
threads. Inspect the oil pan sealing surface for
straightness. Repair any minor imperfections with a
ball-peen hammer. Do not attempt to repair an oil
pan by welding.
BR/BEENGINE 5.9L DIESEL 9 - 179
OIL (Continued)

(8) Position the charge air cooler outlet tube onto
the air inlet housing (Fig. 166). Tighten the clamps
to 8 N´m (72 in. lbs.) torque.(9) Perform the fuel system air bleed procedure
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE).
(10) Connect the battery negative cables.
EXHAUST MANIFOLD
REMOVAL
(1) Disconnect the battery negative cables.
(2) Raise vehicle on hoist.
(3) Disconnect the exhaust pipe from the turbo-
charger elbow (Fig. 169) .
(4) Lower vehicle.
(5) Disconnect the turbocharger air inlet hose (Fig.
170) .
(6) Disconnect the turbocharger oil supply line and
the oil drain tube from the turbocharger (Fig. 171) .
(7) Disconnect the charge air cooler inlet pipe from
the turbocharger (Fig. 171) .
(8) Remove the turbocharger and gasket from the
exhaust manifold.
(9) Remove the cab heater return pipe nut from
the exhaust manifold stud. Position the tube out of
the way.
(10) Remove the exhaust manifold-to-cylinder head
bolts and spacers (Fig. 172) .
(11) Remove the exhaust manifold and gaskets
(Fig. 172) .
CLEANING
Clean the cylinder head and exhaust manifold seal-
ing surfaces with a suitable scraper. Use a Scotch-
BriteŸ pad or equivalent.
Fig. 167 Air Inlet Housing
1 - GROUND STRAP
2 - AIR INTAKE HOUSING
3 - HEATER POWER CABLE MOUNTING STUDS
4 - FUEL LINE BRACKET BOLT
5 - HOUSING BOLTS (4)
Fig. 168 Intake Air Grid Heater
1 - AIR HEATER ELEMENTS
2 - LOWER GASKET
3 - BLOCK
4 - UPPER GASKET
Fig. 169 Exhaust Pipe
1 - EXHAUST PIPE
2 - TURBOCHARGER EXHAUST PIPE
BR/BEENGINE 5.9L DIESEL 9 - 185
INTAKE MANIFOLD (Continued)

INSPECTION
Inspect the exhaust manifold for cracks. Measure
the exhaust manifold for flatness. Place a ruler over
all of the exhaust ports and insert a feeler gauge
between the port flange and the ruler.
INSTALLATION
(1) Using new gaskets, install the exhaust mani-
fold and gaskets. Install the bolts and spacers and
tighten the bolts in the sequence shown in (Fig. 172)
to 43 N´m (32 ft. lbs.) torque.
(2) Install the cab heater return hose to the man-
ifold bolt stud. Tighten the nut to 24 N´m (18 ft. lbs.)
torque.
(3) Install the turbocharger. Apply anti-seize to the
studs and then tighten the turbocharger mounting
nuts to 32 N´m (24 ft. lbs.) torque.
(4) Install the oil drain tube and oil supply line to
the turbocharger. Tighten the drain tube bolts to 24
N´m (18 ft. lbs.) torque.
(5)Pre-lube the turbocharger.Pour 50 to 60 cc
(2 to 3 oz.) clean engine oil in the oil supply line fit-
ting. Rotate the turbocharger impeller by hand to
distrubute the oil thoroughly.
(6) Install and tighten the oil supply line fitting
nut to 20 N´m (133 in. lbs.) torque.
Fig. 170 Turbocharger Air Inlet Hose
1 - AIR FILTER HOUSING COVER
2 - TURBOCHARGER
3 - AIR INLET TUBE
4 - HOSE CLAMP
5 - HINGE TABS
6 - FILTER MINDER
7 - CLIPS (4)
8 - TUBE ALIGNMENT NOTCHES
Fig. 171 Oil Supply Line and Charge Air Cooler Inlet
Duct
1 - EXHAUST PIPE
2 - TURBOCHARGER
3 - AIR INLET TUBE
4 - INTERCOOLER INLET DUCT
5 - WASTE GATE ACTUATOR
Fig. 172 Exhaust Manifold and Gaskets
9 - 186 ENGINE 5.9L DIESELBR/BE
EXHAUST MANIFOLD (Continued)

(7) Position the charge air cooler inlet pipe to the
turbocharger. With the clamp in position, tighten the
clamp nut to 8 N´m (72 in. lbs.) torque.
(8) Position the air inlet hose to the turbocharger
(Fig. 170). Tighten the clamp to 8 N´m (72 in. lbs.)
torque.
(9) Raise vehicle on hoist.
(10) Connect the exhaust pipe to the turbocharger
(Fig. 169) and tighten the bolts to 34 N´m (25 ft. lbs.)
torque.
(11) Lower the vehicle.
(12) Connect the battery negative cables.
(13) Start the engine to check for leaks.
VALVE TIMING
STANDARD PROCEDURE - TIMING
VERIFICATION
(1) Remove the cylinder head cover.
(2) Remove fuel injector from cylinder number 1.
(3) Remove the crankcase breather from the gear
housing cover.
(4) Using Special Tool 7471B rotate the engine
until the timing mark on the fuel pump gear is
aligned with the TDC mark on the gear housing
cover.
(5) Using a 8 in.x 1/4 in. dowel rod inserted into
cylinder number 1, rock the crankshaft back and
forth to verify piston number 1 is at TDC.
(6) With piston number 1 at TDC the timing mark
on the fuel pump gear should be aligned with the
TDC mark on the gear housing cover. If marks do not
line up, remove the gear housing cover.
(7) With cylinder number still at TDC, inspect the
keyway on the crankshaft gear for proper alignment
(12 o'clock position).
(8) If the keyway is not at 12 o'clock position
replace the crankshaft gear assembly.
(9) If the keyway is at 12 o'clock position, verify
timing mark alignment between the camshaft gear,
crankshaft gear and the fuel pump gear, if not
aligned inspect keyway on camshaft gear.
(10) Inspect keyway on camshaft gear for proper
alignment with the key in the camshaft, if alignment
is off replace the camshaft/gear assembly.
(11) If timing marks alignment is off and no dam-
age is found at either the crankshaft or camshaft
gear keyways, realign timing marks as necessary.
GEAR HOUSING
REMOVAL
(1) Disconnect the battery negative cables.
(2) Raise vehicle on hoist.(3) Partially drain engine coolant into container
suitable for re-use (Refer to 7 - COOLING - STAN-
DARD PROCEDURE).
(4) Lower vehicle.
(5) Remove radiator upper hose.
(6) Disconnect coolant recovery bottle hose from
radiator filler neck and lift bottle off of fan shroud.
(7) Disconnect windshield washer pump supply
hose and electrical connections and lift washer bottle
off of fan shroud.
(8) Remove the fan shroud-to-radiator mounting
bolts.
(9) Remove viscous fan/drive assembly (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - REMOVAL).
(10) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(11) Remove the cooling fan support/hub from the
front of the engine (Fig. 173).
(12) Raise the vehicle on hoist.
(13) Remove the crankshaft damper (Fig. 174)
(Refer to 9 - ENGINE/ENGINE BLOCK/VIBRATION
DAMPER - REMOVAL).
(14) Lower the vehicle.
(15) Remove the gear cover-to-housing bolts and
gently pry the cover away from the housing (Fig.
175), taking care not to mar the gasket surfaces.
(16) Remove the fuel injection pump (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY/FUEL INJEC-
TION PUMP - REMOVAL).
(17) Disconnect the camshaft position sensor con-
nector.
Fig. 173 Fan Support/Hub Assembly - Removal/
Installation
1 - FAN SUPPORT/HUB
2 - FAN PULLEY
BR/BEENGINE 5.9L DIESEL 9 - 187
EXHAUST MANIFOLD (Continued)