Engine DODGE RAM 2003 Service Repair Manual
[x] Cancel search | Manufacturer: DODGE, Model Year: 2003, Model line: RAM, Model: DODGE RAM 2003Pages: 2895, PDF Size: 83.15 MB
Page 1553 of 2895

(40) Install wire harness P-clip to top of bracket.
(41) Install fan support and torque to 32 N´m (24
ft. lbs.).
(42) Install cooling fan/drive and torque to 33 N´m
(24 ft. lbs.).
(43) Install accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(44) Install exhaust manifold/turbocharger assem-
bly, using new gaskets. Start all bolts/spacers by
hand. Torque bolts to 43 N´m (32 ft. lbs.).
(45) Install exhaust manifold heat shield. Torque
to 24 N´m (18 ft. lbs.).
(46) Install exhaust bolt retention straps across
cylinders5&6.
(47) Connect turbocharger oil drain tube. Torque to
8 N´m (71 in. lbs.).
(48) Perform the turbocharger pre-lube procedure.
Refer to Group 11, Exhaust System and Turbo-
charger for the correct procedure.
(49) Connect the turbocharger oil supply line.
Torque to 24 N´m (18 ft. lbs.).
(50) Install air cleaner housing and duct.
(51) Connect air inlet temperature/pressure sensor.
(52) Raise vehicle on hoist.
(53) Install exhaust pipe to turbocharger elbow.
Torque bolts to 8 N´m (72 in. lbs.).
(54) Lower vehicle.
(55) Fill engine coolant (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(56) Start engine and check for leaks.
CYLINDER HEAD COVER(S)
REMOVAL
REMOVALÐCYLINDER HEAD COVER
(1) Disconnect both battery negative cables.
(2) Remove oil fill cap.
(3) Remove the breather cover.
(4) Disconnect the breather hose and breather
drain tube from the breather housing.
(5) Remove cylinder head cover bolts.
(6) Remove the cylinder head cover.
REMOVALÐROCKER HOUSING
(1) Remove cylinder head cover as outlined in this
section.
(2) Disconnect rocker housing injector harness con-
nectors.
(3) Remove injector harness nuts from injectors.
(4) Remove rocker housing bolts.
(5) Remove rocker housing and gasket.
CLEANING
Using a suitable solvent, Clean and dry gasket
mating surfaces on cylinder head and rocker housing.
Wipe gasket dry and inspect for re-use.
INSPECTION
The cylinder head cover gasket, rocker hous-
ing gasket, are reusable.However, should cracks,
nicks, or tears be present in the rubber/silicone con-
struction, the defective components should be
replaced. Also replace gasket if it is no longer flexi-
ble. Inspect o-rings on cylinder head cover bolts.
INSTALLATION
INSTALLATIONÐCYLINDER HEAD COVER
(1) Inspect cylinder head cover gasket for cuts and
proper installation in groove. Replace if damaged.
(2) Position cylinder cover on top of rocker hous-
ing.
(3) Install bolts.
(4) Starting with the center bolt, torque to 24 N´m
(18 ft. lbs.).
(5) Install breather hose to breather.
(6) Install breather drain hose to breather.
(7) Install breather cover and wire harness clip.
Torque to 24 N´m (18 ft. lbs.).
INSTALLATIONÐROCKER HOUSING
(1) Inspect rocker housing gasket for cuts, nicks,
or tears. Replace if damaged or if gasket has come
out of groove.
(2) Inspect rocker housing gasket for proper instal-
lation in groove. Gasket bead must be centered in
groove. A gasket bead that is tilted to the side will
cause an oil leak.
(3) Install ToolXXXXguide pins (or equivalent)
into the cylinder head at rocker housing bolt loca-
tions #1 and #5.
(4) Install the rocker hoiusing over the guide pins.
Carefully gyide the rocker housing evenly down onto
the cylinder head.
(5) With guide pins in place, install remaining
rocker housing bolts and tighten finger tight.
(6) Remove guide pins and install remaining
rocker housing bolts finger tight.
(7) Install rocker housing and bolts. Torque bolts,
working from center out, to 24 Nm (18ft. lbs.).
(8) Install injector harness nuts to injector sole-
noid. Torque to 1.5 Nm (13 in. lbs.).
(9) Connect rocker housing injector harness con-
nections.
9 - 304 ENGINE 5.9L DIESELDR
CYLINDER HEAD (Continued)
Page 1554 of 2895

INTAKE/EXHAUST VALVES &
SEATS
DESCRIPTION
The valves are made of heat resistant steel, and
have chrome plated stems to prevent scuffing. The
intake and exhaust valves are both similar in head
diameter and overall length, but they have unique
face angles which makes them non-interchangeable.
The valves are distinguished by unique dimples on
the exhaust valve head (Fig. 21).
The exhaust valve springs are made from high
strength, chrome silicon steel. The exhaust valve
springs are also exhaust brake compatible.
STANDARD PROCEDURE
STANDARD PROCEDURE - VALVES, GUIDES
AND SPRINGS
REMOVAL
(1) Remove cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(2) Support cylinder head on stands, or install
head bolts upside down (through combustion surface
side) to protect injector tips from damage from work
bench.
(3) Install the valve spring compressor mounting
base as shown in (Fig. 22).
(4) Install the compressor top plate, washer, and
nut. Using a suitable wrench, tighten the nut (clock-
wise) to compress the valve springs (Fig. 23) and
remove the locks.
(5) Rotate the compressor nut counter-clockwise to
relieve tension on the springs. Remove the spring
compressor.(6) Remove the retainers, springs, valve seals (if
necessary), and valves (Fig. 24). Arrange or number
all components so they can be installed in their orig-
inal locations.
(7) Repeat the procedure on all cylinders to be ser-
viced.
CLEANING
Clean the valve stems with crocus cloth or a
Scotch-BriteŸ pad. Remove carbon with a soft wire
brush. Clean valves, springs, retainers, and valve
retaining locks in a suitable solvent. Rinse in hot
water and blow dry with compressed air.
Fig. 21 Valve Identification
1 - INTAKE VALVES
2 - EXHAUST VALVES
Fig. 22 Spring Compressor Mounting BaseÐPart of
Tool 8319±A
1 - COMPRESSOR MOUNTING BASE
Fig. 23 Compressing Valve Springs with Tool
8319±A
1 - SPECIAL TOOL 8319
DRENGINE 5.9L DIESEL 9 - 305
Page 1555 of 2895

INSPECTION
Visually inspect the valves for abnormal wear on
the heads, stems, and tips. Replace any valve that is
worn out or bent (Fig. 25).Measure the valve stem diameter in three places
as shown in (Fig. 26).
Measure the cylinder head valve guide bore (Fig. 27).
VALVE GUIDE BORE SPECIFICATIONS
VALVE GUIDE BORE SPECIFICATIONS
Valve guide bore
diameter
Min. 7.027 mm (0.2767 in.)
Max. 7.077 mm (0.2786 in.)
Installed valve guide
depth
Intake
Min. 0.584 mm ( 0.023 in.)
Max. 1.092 mm ( 0.043 in.)
Exhaust
Min. 0.965 mm ( 0.028 in.)
Max. 1.473 mm (0.058 in.)
Fig. 24 Valve Spring, Seal, and Retainers
1 - VALVE RETAINING LOCKS
2 - VALVE
3 - SEAL
4 - SPRING
5 - RETAINER
Fig. 25 Visually Inspect Valves for Abnormal Wear
Fig. 26 Measure Valve Stem Diameter
VALVE STEM DIAMETER
6.96 mm (0.2740 in.) MIN
7.010 mm (0.2760 in.) MAX
Fig. 27 Measure Valve Guide Bore
9 - 306 ENGINE 5.9L DIESELDR
INTAKE/EXHAUST VALVES & SEATS (Continued)
Page 1556 of 2895

Measure valve margin (rim thickness) (Fig. 28).
Measure the valve spring free length and maxi-
mum inclination (Fig. 29).
Test valve spring force with tool C-647 (Fig. 30).
Specification 72.0 Ð 80.7 lbs. when compressed to
35.33 mm (1.39 in.).
INSTALLATION
(1) Install new valve seals. The yellow seals 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. 31).
(3) Install the valve springs and retainer.
(4) Install the valve spring compressor tool 8319±A
as shown in (Fig. 22) and (Fig. 23).(5) Compress the valve springs and install the
valve retaining locks (Fig. 24).
(6) Remove the compressor and repeat the proce-
dure on the remaining cylinders.
(7) Install new o-ring and sealing washer on injec-
tor.
(8) Lubricate o-ring and injector bore.
(9) Verify sealing washer (shim) was removed with
old injector.
(10) Install injector with fuel injector connector
port facing intake manifold.
(11) Install hold-down bolt. Torque to 10 Nm (89
in. lbs.).
(12) Install fuel injector connector and connector
nut. Torque nut to 50 Nm (36.8 ft. lbs.).
(13) Install the cylinder head (Refer to 9 -
ENGINE/CYLINDER HEAD - INSTALLATION).
Fig. 28 Measure Valve Margin (Rim Thickness)
VALVE MARGIN (RIM THICKNESS)
0.79 mm (0.031 in.) MIN.
Fig. 29 Measure Valve Spring Free Length and Max.
Inclination
APPROXIMATE VALVE SPRING FREE LENGTH
47.75 mm (1.88 in.)
MAX INCLINATION
1.5 mm (.059 in.)
Fig. 30 Testing Valve Spring with Tool C-647
1 - SPECIAL TOOL C-647
Fig. 31 Valve Identification
1 - INTAKE VALVES
2 - EXHAUST VALVES
DRENGINE 5.9L DIESEL 9 - 307
INTAKE/EXHAUST VALVES & SEATS (Continued)
Page 1557 of 2895

STANDARD PROCEDURE - VALVE 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 or
injectors.
(1) Disconnect battery negative cables.
(2) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Using the crankshaft barring tool #7471±B,
rotate crankshaft to align damper TDC mark to
12:00 o'clock position.
(a) If both number one cylinder rocker levers are
loose, continue to next step.
(b) If both number one clylinder rocker levers
are not loose, rotate crankshaft 360 degrees.
(4) With the engine in this position, valve lash can
be measured at the following rocker arms:INTAKE
1±2±4 / EXHAUST 1±3±5. Measure the valve lash by
inserting a feeler gauge between the rocker arm
socket and crosshead (Fig. 32). Refer to VALVE
LASH LIMIT CHART for the correct specifications. If
the measurement fallswithinthe limits, adjust-
ment/resettingis notnecessary. If measurement
finds the lashoutsideof the limits, adjustment/re-
settingisrequired.
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.(5) 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 to 24 Nm (18 ft. lbs.) and re-check the valve
lash.
(6) Using the crankshaft barring tool, rotate the
crankshaftone revolution (360É) to align the
damper TDC mark to the 12 o'clock position.
(7) With the engine in this position, 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 determining whether adjustment is neces-
sary, and adjust those that are found to be outside of
the limits.
(8) Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
(9) Connect the battery negative cables.
REMOVAL - VALVE SPRINGS AND SEALS
(1) Disconnect the battery negative cables.
(2) Remove the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Disconnect rocker housing injector harness con-
nector. Remove all injector harness solenoid nuts.
(4) Remove injector(s) for cylinder(s) to be serviced.
Refer to Group 14 for injector removal.
(5) Remove the rocker housing.
(6) Remove the rocker arms and crossheads from
the cylinder(s) to be serviced. Mark each component
so they can be installed in their original position.
(7) Using the crankshaft barring tool #7471±B
(Fig. 33), rotate the engine to position the damper
Fig. 32 Measuring Valve Lash - Typical
1 - INTAKE
2 - FEELER GAUGE
3 - EXHAUST
9 - 308 ENGINE 5.9L DIESELDR
INTAKE/EXHAUST VALVES & SEATS (Continued)
Page 1558 of 2895

mark in the 12 o'clock position.At this engine posi-
tion, cylinders #1 and #6 can be serviced.
(8) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(9) With the damper TDC mark in the 12 o'clock
position, 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.
(10) 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.
The damper should now be marked in three
equally spaced locations and the damper TDC
mark should be in the 12 o'clock position.
(d) Remove injectors, fuel lines, and high pres-
sure connectors for every cylinder that requires
repair.
(11) Compress the valve springs at cyls. #1 and #6
as follows:
(a) Remove bolts and injector hold-down clamp.
(b) Using miller special tool #9010, remove injec-
tor.
(c) Install the valve spring compressor mounting
base as shown in (Fig. 34).
(d) Install the top plate, washer, and nut. Using
a suitable wrench tighten the nut (clock-wise) (Fig.35) to compress the valve springs and remove the
collets.
(e) Rotate the compressor nut counter-clockwise
to relieve tension on springs. Remove spring com-
pressor.
(f) Remove and replace retainers, springs, and
seals as necessary.
(g)Do not rotate the engine until the
springs and retainers are re-installed.
(h) Install seals, springs and retainers. Install
spring compressor, compress valve springs and
install the collets.
(i) Release the spring tension and remove the
compressor. Verify that the collets are seated by
tapping on the valve stem with a plastic hammer.
(12) Using the crankshaft barring tool, rotate the
engine until the next crankshaft damper paint mark
aligns with the mark you placed on the cover.In this
position, cylinders #2 and #5 can be serviced.
(13) Repeat the valve spring compressing proce-
dure previously performed and service the retainers,
springs, and seals as necessary.
(14) Using the crankshaft barring tool, rotate the
engine until the next crankshaft damper paint mark
aligns with the mark you placed on the cover.In this
position, cylinders #3 and #4 can be serviced.
(15) Repeat the spring compressing procedure pre-
viously performed and service the retainers, springs,
and seals as necessary.
INSTALLATION
(1) Install rocker housing.
(2) Install fuel injectors and high pressure fuel
lines.
(3) Lubricate the valve tips and install the cross-
heads in their original locations.
Fig. 33 Rotating Engine with Barring Tool - Typical
1 - REAR FLANGE
2 - BARRING TOOLFig. 34 Spring Compressor Mounting BaseÐPart of
Tool 8319±A
1 - COMPRESSOR MOUNTING BASE
DRENGINE 5.9L DIESEL 9 - 309
INTAKE/EXHAUST VALVES & SEATS (Continued)
Page 1559 of 2895

(4) Lubricate the crossheads and push rod sockets
and install the rocker arms and pedestals in their
original locations. Tighten bolts to 36 N´m (27 ft. lbs.)
torque.
(5)Verify valve lash adjustment (Refer to 9 -
ENGINE/CYLINDER HEAD/INTAKE/EXHAUST
VALVES & SEATS - STANDARD PROCEDURE).
(6) Install cylinder head cover and reusable gasket
(Refer to 9 - ENGINE/CYLINDER HEAD/CYLIN-
DER HEAD COVER(S) - INSTALLATION).
(7) Connect battery negative cables.
ROCKER ARM / ADJUSTER
ASSY
DESCRIPTION
The unique intake and exhaust rocker arms have
their own rocker shafts and are lubricated by pas-
sages intersecting the cylinder block main oil rifle.
Crossheads are used, 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 (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(3) Remove the rocker arm/pedestal fasteners (Fig.
36) 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. 37) 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. 38). Mark them so they can be installed in their
original position.
NOTE: The #5 cyl. intake and exhaust and #6 cyl.
intake and exhaust push rods must be raised
through the provided 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.
CLEANING
Clean all components in a suitable solvent. If nec-
essary, use a wire brush or wheel to remove stubborn
deposits. Rinse in hot water and blow dry with com-
pressed air. Inspect oil passages in rocker arms and
pedestals. Apply compressed air to lubrication orifices
to purge contaminants.
Fig. 35 Compressing Valve Springs with Tool
8319±A
1 - SPECIAL TOOL 8319
Fig. 36 Rocker Arm and Pedestal Removal
1 - ROCKER ARM
2 - PEDESTAL
9 - 310 ENGINE 5.9L DIESELDR
INTAKE/EXHAUST VALVES & SEATS (Continued)
Page 1560 of 2895

INSPECTION
Rocker Arms
(1) Remove rocker shaft and inspect for cracks and
excessive wear in the bore or shaft. Remove socket
and inspect ball insert and socket for signs of wear.
Replace retainer if necessary.
Measure the rocker arm bore and shaft (Fig. 39)
(Fig. 40).
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. 41).
Roll the push rod on a flat work surface with the
socket end hanging off the edge (Fig. 42). Replace
any push rod that appears to be bent.
Fig. 37 Rocker Arm Assembly Identification
1 - NUT
2 - ADJUSTING SCREW
3 - ROCKER SHAFT
4 - RETAINER
5 - SOCKET
Fig. 38 Push Rod Removal/Installation
Fig. 39 Measuring Rocker Arm Bore
ROCKER ARM BORE (MAX.)
22.027 mm (.867 in.)
Fig. 40 Measuring Rocker Arm Shaft
ROCKER ARM SHAFT (MIN.)
21.965 mm (.865 in.)
Fig. 41 Inspecting Push Rod for Cracks
DRENGINE 5.9L DIESEL 9 - 311
ROCKER ARM / ADJUSTER ASSY (Continued)
Page 1561 of 2895

Crossheads
Inspect the crossheads for cracks and/or excessive
wear on rocker lever and valve tip mating surfaces
(Fig. 43).
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 in their
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
(Refer to 9 - ENGINE/CYLINDER HEAD/CYLIN-
DER HEAD COVER(S) - INSTALLATION).
(6) Connect battery negative cables.
ENGINE BLOCK
STANDARD PROCEDURE
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. 44).
(2) The upper right corner of the rear face of the
block must be stamped with a X when the block is
refaced to 0.25 mm (0.0098 inch). A second X must be
stamped beside the first when the block is refaced to
0.50 mm (0.0197 inch) - (Fig. 45).
Fig. 42 Inspecting Push Rod for Flatness
Fig. 43 Inspecting Crosshead for Cracks
Fig. 44 Refacing Dimensions of the Cylinder Block
CYLINDER BLOCK REFACING DIMENSIONS
DIMENSION(A(
1st Reface 0.25mm (0.0098 in.)
2nd Reface 0.25mm (0.0098 in.)
Dim (A) Total 0.50 mm (0.0197 in.)
DIMENSION(B(
Dim.9B9(STD.)323.00 mm 0.10
mm(12.7165 in.
0.0039 in.)
1st Reface322.75 mm 0.10
mm(12.7067 in.
0.0039 in.)
2nd Reface322.50 mm 0.10
mm(12.6968 in.
0.0039 in.)
9 - 312 ENGINE 5.9L DIESELDR
ROCKER ARM / ADJUSTER ASSY (Continued)
Page 1562 of 2895

(3) Consult the parts catalog for the proper head
gaskets which must be used with refaced blocks to
ensure proper piston-to-valve clearance.
STANDARD PROCEDURE - CYLINDER BORE -
DE-GLAZE
(1) New piston rings may not seat in glazed cylin-
der bores.
(2) De-glazing gives the bore the correct surface
finish required to seat the rings. The size of the bore
is not changed by proper de-glazing.
(3) Cover the lube and tappet holes in the top of
the block with waterproof tape.
(4) It crankshaft is installed, wrap connecting rod
journals with clean cloth. Cover cloth with water-
proof tape.
(5) A correctly honed surface will have a cross-
hatch appearance with the lines at 15É to 25É angles
(Fig. 46). For the rough hone, use 80 grit honing
stones. To finish hone, use 280 grit honing stones.
(6) Use a drill, a fine grit Flex-hone and a mixture
of equal parts of mineral spirits and SAE 30W engine
oil to de-glaze the bores.
(7) The crosshatch angle is a function of drill
speed and how fast the hone is moved vertically (Fig.
47).
(8) Vertical strokes MUST be smooth continuous
passes along the full length of the bore (Fig. 47).(9) Inspect the bore after 10 strokes.
(10) Use a strong solution of hot water and laun-
dry detergent to clean the bores. Clean the cylinder
bores immediately after de-glazing.
(11) Rinse the bores until the detergent is removed
and blow the block dry with compressed air.
(12) Check the bore cleanliness by wiping with a
white, lint free, lightly oiled cloth. If grit residue is
still present, repeat the cleaning process until all res-
idue is removed. Wash the bores and the complete
block assembly with solvent and dry with compressed
air. Place a clean shop towel around the top main
bearing saddle to deflect water and residue from pis-
ton cooling nozzels. Remove directed piston cooling
nozzles if installed.
(13) Be sure to remove the tape covering the lube
holes, rod journals, and piston cooling nozzles after
the cleaning process is complete.
STANDARD PROCEDUREÐCYLINDER BORE
REPAIR
Cylinder bore(s) can be repaired by one of two
methods:
²Method 1:ÐOver boring and using oversize pis-
tons and rings.
²Method 2:ÐBoring and installing a repair sleeve
to return the bore to standard dimensions.
METHOD 1ÐOVERSIZE BORE
Cylinder bore(s) can be repaired by one of two
methods:
Oversize pistons and rings are available in two
sizes - 0.50 mm (0.0197 inch) and 1.00 mm (0.0393
inch).
Any combination of standard, 0.50 mm (0.0197
inch) or 1.00 mm (0.0393 inch) overbore may be used
in the same engine.
Fig. 45 Stamp Block after Reface
Fig. 46 Cylinder Bore Crosshatch Pattern
Fig. 47 De-Glazing Drill Speed and Vertical Speed
DRENGINE 5.9L DIESEL 9 - 313
ENGINE BLOCK (Continued)