2001 DODGE RAM engine

Inspect the tappet bores for scoring or excessive
wear 16.000 mm min - 16.055 mm max ( .63 in. min
- .6321 in. max ) (Fig. 81). If out of limits, replace the
cylinder block.
CAMSHAFT & BEARINGS (IN
BLOCK)
REMOVALÐCAMSHAFT BEARINGS
NOTE: Measure the diameter of each bore. (The
limit for the bushing in the No.1 bore is the same as
for the other bores without bushings). The limit of
the inside diameter is 54.089 min. - 54.164 max. mm
(2.1295 min. - 2.1325 max. inch). If the camshaft
bore for the first cam bushing is worn beyond the
limit, install a new service bushing. Inspect the rest
of the camshaft bores for damage or excessive
wear.If the bores without a bushing are worn
beyond the limit, the engine must be removed for
machining and installation of service bushings. If
badly worn, replace the cylinder block.
(1) Remove the camshaft (Refer to 9 - ENGINE/
ENGINE BLOCK/CAMSHAFT & BEARINGS (IN
BLOCK) - REMOVAL).
(2) Remove the bushing from the No.1 bore, using
a universal cam bushing tool.
(3) Mark the cylinder block so you can align the oil
hole in the cylinder block with the oil hole in the
bushing.
REMOVALÐCAMSHAFT
(1) Disconnect both battery negative cables.
(2) Recover A/C refrigerant (if A/C equipped) (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING - STANDARD PROCEDURE).
(3) Raise vehicle on hoist.
(4) Drain engine coolant into container suitable for
re-use (Refer to 7 - COOLING - STANDARD PROCE-
DURE).
(5) Lower vehicle.
(6) Remove radiator upper hose.
(7) Remove viscous fan/drive assembly and fan
shroud (Refer to 7 - COOLING/ENGINE/RADIATOR
FAN - REMOVAL).
(8) Disconnect the coolant recovery bottle hose
from the radiator filler neck.
(9) Disconnect lower radiator hose from radiator
outlet.
(10)Automatic Transmission models:Discon-
nect transmission oil cooler lines from radiator using
Special Tool 6931 (unless equipped with finger-re-
lease disconnect).
(11) Remove radiator mounting screws and lift
radiator out of engine compartment.
(12) Remove upper radiator support panel.
(13) Remove front bumper assembly (Refer to 13 -
FRAMES & BUMPERS/BUMPERS/FRONT
BUMPER - REMOVAL).
Fig. 79 Combustion Deck Face Measurement
1 - STRAIGHT EDGE
2 - FEELER GAUGE
Fig. 80 Cylinder Bore Diameter
Fig. 81 Tappet Bore Diameter
9 - 268 ENGINE 5.9L DIESELBR/BE
ENGINE BLOCK (Continued)

(14) If A/C equipped, disconnect A/C condenser
refrigerant lines.
(15) Disconnect charge air cooler piping from the
cooler inlet and outlet.
(16) Remove the two charge air cooler mounting
bolts.
(17) Remove charge air cooler (and A/C condenser
if equipped) from vehicle.
(18) Remove accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(19) Remove the fan support/hub assembly (Fig.
82).
(20) Remove crankshaft damper (Fig. 83) (Refer to
9 - ENGINE/ENGINE BLOCK/VIBRATION
DAMPER - REMOVAL).
(21) Remove the crankcase breather vapor canister
from the gear housing cover (Fig. 84).
(22) Using Special Tool 7471±B Crankshaft Bar-
ring Tool, rotate the crankshaft to bring the engine to
TDC #1.
(23) Remove the gear cover-to-housing bolts and
gently pry the cover away from the housing, taking
care not to mar the sealing surfaces.
Fig. 82 Fan Support/Hub Removal/Installation
1 - FAN SUPPORT/HUB
2 - FAN PULLEY
Fig. 83 Crankshaft Damper Removal/Installation
1 - DAMPER
2 - BOLT
Fig. 84 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 - 269
CAMSHAFT & BEARINGS (IN BLOCK) (Continued)

(24) Remove the cylinder head cover (Fig. 85)
(Refer to 9 - ENGINE/CYLINDER HEAD/CYLIN-
DER HEAD COVER(S) - REMOVAL).
(25) Remove the rocker arms (Fig. 86), cross
heads, and push rods (Fig. 87). Mark each component
so they can be installed in their original positions.
NOTE: The #5 cylinder exhaust and the #6 cylinder
intake and exhaust pushrods are removed by lifting
them up and through the provided cowl panel
access holes. Remove the rubber plugs to expose
these relief holes.
Fig. 85 Cylinder Head Cover Removal/Installation
1 - BOLT (5)
2 - GASKET
3 - ªTOP FRONTº
4 - ISOLATOR (5)
Fig. 86 Rocker Arm and Pedestal Removal/
Installation
1 - ROCKER ARM
2 - PEDESTAL
Fig. 87 Push Rod Removal/Installation
9 - 270 ENGINE 5.9L DIESELBR/BE
CAMSHAFT & BEARINGS (IN BLOCK) (Continued)

(26) Raise the tappets as follows, using the wooden
dowel rods (Fig. 88) provided with the Miller Tool Kit
8502 or Cummins tappet replacement tool kit
#3822513:
(a) Insert the slotted end of the dowel rod into
the tappet.The dowel rods for the rear two
cylinders will have to be cut for cowl panel
clearance.Press firmly to ensure that it is seated
in the tappet.
(b) Raise the dowel rod to bring the tappet to
the top of its travel, and wrap a rubber band
around the dowel rods (Fig. 88) to prevent the tap-
pets from dropping into the crankcase.
(c) Repeat this procedure for the remaining cyl-
inders.
(27) Verify that the camshaft timing marks are
aligned with the crankshaft and injection pump
marks (Fig. 89).
(28) Remove the bolts from the thrust plate (Fig.
90).
CAUTION: When removing the camshaft and thrust
plate, grab the thrust plate to prevent it from falling
into the crankcase.
Fig. 88 Use Wooden Dowel Rods to Secure Tappets
in Place
Fig. 89 Timing Mark Alignment
Fig. 90 Thrust Plate Bolt Location
1 - CAMSHAFT GEAR
2 - THRUST PLATE
BR/BEENGINE 5.9L DIESEL 9 - 271
CAMSHAFT & BEARINGS (IN BLOCK) (Continued)

(29)Remove the camshaft (Fig. 91) and thrust plate.
INSPECTION
Camshaft
(1)Inspect the valve lobes and bearing journals for
cracks, pitting, scoring, or generally excessive wear.
Replace any camshaft that exceeds the allowable limits.
(2)Measure the bearing journals and lobes (Fig. 92).
CAUTION: If Camshaft lobes are worn, requiring
camshaft replacement, it is necessary to replace the
tappets also. (Refer to 9 - ENGINE/ENGINE BLOCK/
SOLID LIFTERS - REMOVAL).
Camshaft Bushing/Bores
Camshaft bores No. 2±7do notuse a bushing.
(1) Inspect the camshaft bushing and bores for
signs of excessive wear.
(2) Measure the camshaft bushing and bores (Fig.
93) with a telescoping bore gauge and micrometer. If
out of specification, (Refer to 9 - ENGINE/ENGINE
BLOCK/CAMSHAFT & BEARINGS (IN BLOCK) -
REMOVAL).
(3) Inspect the camshaft bushing oil hole for align-
ment with cylinder block (Fig. 94).
Fig. 92 Measuring
1 - VALVE LOBE
2 - CAMSHAFT JOURNAL
JOURNAL DIAMETER #1 54.028 mm (2.1270 in.) MIN.
JOURNAL DIAMETER #2 - 7 53.987 mm (2.1245 in.) MIN.
LOBE HEIGHT INTAKE 47.173 mm (1.857 in.) MIN.
LOBE HEIGHT EXHAUST 45.636 mm (1.796 in.) MIN.
Fig. 91 Camshaft Removal/Installation
Fig. 93 Measuring Camshaft Bushing and Bores
Fig. 94 Inspecting Oil Hole Alignment
1 - CAMSHAFT BUSHING
9 - 272 ENGINE 5.9L DIESELBR/BE
CAMSHAFT & BEARINGS (IN BLOCK) (Continued)

Camshaft Gear
Inspect the camshaft gear for cracks (gear and
hub) (Fig. 95), and chipped/broken/fretted teeth (Fig.
96). If replacement is necessary, (Refer to 9 -
ENGINE/ENGINE BLOCK/CAMSHAFT & BEAR-
INGS (IN BLOCK) - REMOVAL).
Thrust Plate
Inspect the camshaft thrust plate for excessive
wear in the camshaft contact area. Measure thrust
plate thickness using the CAMSHAFT THRUST
PLATE THICKNESS CHART. Replace any thrust
plate that falls outside of these specifications:
CAMSHAFT THRUST PLATE THICKNESS
CHART
9.34 mm (0.368 in.) MIN.
9.58 mm (0.377 in.) MAX.
INSTALLATIONÐCAMSHAFT BEARINGS
(1) Apply a coating of Loctitet640 Adhesive to the
backside of the new bushing. Avoid getting adhesive
in the oil hole.
(2) Use a universal cam bushing installation tool
and install the bushing so that it is even with the
front face of the cylinder block. The oil hole must be
aligned. A 3.2 mm (0.128 inch) diameter rod must be
able to pass through the hole (Fig. 97).
(3) Measure the installed bushing. The limit of the
inside diameter is 54.133 mm (2.1312 inch).
INSTALLATIONÐCAMSHAFT
(1) Lubricate the camshaft bushing and bores with
fresh engine oil or suitable equivalent.
(2) Liberally coat the camshaft lobes, journals, and
thrust washer with fresh engine oil or suitable equiv-
alent.
CAUTION: When installing the camshaft (Fig. 91),
DO NOT push it in farther than it will go with the
thrust washer in place. Pushing it too far can dis-
lodge the plug in the rear of the camshaft bore and
cause an oil leak.
(3) Install the camshaft (Fig. 91) and thrust plate.
Align the timing marks as shown in (Fig. 89).
(4) Install the thrust plate bolts and tighten to 24
N´m (18 ft. lbs.) torque.
(5) Measure camshaft back lash and end clearance
(Fig. 98).
(6) Remove the wooden dowel rods and rubber
bands from the tappets.
(7) Lubricate the push rods with engine oil and
install in their original location (Fig. 87).Verify that
they are seated in the tappets.
(8) Lubricate the valve tips with engine oil and
install the crossheads in their original locations.
(9) Lubricate the crossheads and push rod sockets
with engine oil and install the rocker arms and ped-
estals in their original locations (Fig. 86). Tighten
bolts to 36 N´m (27 ft. lbs.) torque.
Fig. 95 Inspect Camshaft Gear Hub for Cracks
Fig. 96 Inspect Camshaft Gear for Cracks and
Fretting
Fig. 97 Oil Hole Alignment
1 - CAMSHAFT BUSHING
BR/BEENGINE 5.9L DIESEL 9 - 273
CAMSHAFT & BEARINGS (IN BLOCK) (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)

If the crankshaft is within limits, replace the bear-
ing. If the crankshaft is out of limits, grind the
crankshaft to the next smaller size and use oversize
rod bearings.
CRANKSHAFT
DESCRIPTION
The crankshaft (Fig. 100) is a forged steel, inte-
grally balanced unit. It is supported by seven main
bearings, with position number six designated as the
thrust journal. The crankshaft is held in place by
main caps and 12 mm capscrews. The crankshaft
also has internal cross drillings to supply the con-
necting rods with engine oil.
CRANKSHAFT MAIN
BEARINGS
STANDARD PROCEDUREÐMAIN BEARING
CLEARANCE
Inspect the main bearing bores for damage or
abnormal wear.
Install the crankshaft main bearings and measure
main bearing bore diameter with the main bolts
tightened to 176 N´m (130 ft. lbs.) torque (Fig. 101).
MAIN BEARING BORE DIAMETER CHART
ITEM MAIN BEARING BORE
DIAMETER (MAXIMUM)
A 83.106 mm 3.2719 in.)
Measure the diameter of the main journal at the
locations shown (Fig. 102). Calculate the average
diameter for each side of the journal.
Fig. 99 Connecting Rod Journal Diameter Limits
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. 100 Crankshaft
Fig. 101 Crankshaft Main Bearing Bore Diameter
1 - MAIN BEARING CAPS
BR/BEENGINE 5.9L DIESEL 9 - 275
CONNECTING ROD BEARINGS (Continued)