Timing chain NISSAN TEANA 2003 User Guide

BASIC SERVICE PROCEDURE
EC-385
[VQ]
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14. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-387, "
IDLE SPEED" .
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed. Refer to EC-387, "
IDLE SPEED" .
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
Refer to EC-387, "
IGNITION TIMING" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-173, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4. VQ23DE: 700 ± 50 rpm (in P or N position)
VQ35DE: 625 ± 50 rpm (in P or N position)
VQ23DE: 700 ± 50 rpm (in P or N position)
VQ35DE: 625 ± 50 rpm (in P or N position)
15 ± 5° BTDC (in P or N position)
PBIB2178E

EC-404
[VQ]
TROUBLE DIAGNOSIS

Air Air duct
55555 5EM-131
Air cleanerEM-131
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5555EM-131
Electric throttle control actuatorEM-133
Air leakage from intake manifold/
Collector/GasketEM-133,
EM-138
Cranking Battery
111111
11SC-4
Generator circuitSC-27
Starter circuit 3EM-228
Signal plate 6EM-228
PNP switch 4AT- 2 3 0,
CVT-62
Engine Cylinder head
55555 55 5EM-210
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-228
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Va l v e
mecha-
nismTiming chain
55555 55 5EM-173
CamshaftEM-192
Intake valve timing controlEM-173
Intake valve
3EM-210
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-140
,
EX-2
Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler
55555 55 5EM-145
,
LU-22
, LU-
23 , LU-25
Oil level (Low)/Filthy oilLU-19
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-462
[VQ]
DTC P0011, P0021 IVT CONTROL

On Board Diagnosis LogicBBS004YY
The MI will not light up for these diagnoses.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureBBS004YZ
CAUTION:
Always drive at a safe speed.
NOTE:

If D TC P 00 11 or P0 02 1 i s di spl ay ed w i t h D TC P1111 or P 11 36 , f ir s t pe r f or m t r o ubl e di agn os is f o r
D TC P1111 o r P113 6. R ef e r t o EC-545, "
DTC P1111, P1136 IVT CONTROL SOLENOID VALVE" .

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Maintain the following conditions for at least 6 consecutive sec-
onds.
Hold the accelerator pedal as steady as possible.
4. Let engine idle for 10 seconds.
5. If the 1st trip DTC is detected, go to EC-464, "
Diagnostic Procedure" .
If the 1st trip DTC is not detected, go to next step.
6. Maintain the following conditions for at least 20 consecutive seconds.
DTC No.Trouble diagnosis
nameDetecting condition Possible cause
P0011
0011
(Bank 1)
Intake valve timing
control performanceThere is a gap between angle of target and
phase-control angle degree.

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)

Intake valve control solenoid valve

Accumulation of debris to the signal pick-up
portion of the camshaft

Timing chain installation

Foreign matter caught in the oil groove for
intake valve timing control P0021
0021
(Bank 2)
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function.
ENG SPEED 1,200 - 2,000 rpm (A constant rotation is maintained.)
COOLANT TEMPS More than 60°C (140°F)
B/FUEL SCHDL More than 3.38 msec
Selector lever P or N position
ENG SPEED 1,700 - 3,175 rpm (A constant rotation is maintained.)
COOLANT TEMPS 70 - 105°C (158 - 221°F)
PBIB0164E

DTC P0011, P0021 IVT CONTROL
EC-465
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6. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Are there any service records that may cause timing chain misaligned?
Ye s o r N o
Yes >> Check timing chain installation. Refer to EM-173, "TIMING CHAIN" .
No >> GO TO 7.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For Wiring Diagram, refer to EC-519, "
Wiring Diagram" for CKP sensor (POS), EC-526, "Wiring Diagram" for
CMP sensor (PHASE).
>>INSPECTION END
Component InspectionBBS004Z2
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve terminals as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12V DC between intake valve timing control solenoid
valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationBBS004Z3
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-173, "TIMING CHAIN" .
Terminals Resistance
1 and 2 7.0 - 7.5Ω [at 20°C (68°F)]
1 or 2 and ground∞Ω
(Continuity should not exist)
PBIB0193E
PBIB2275E

DTC P1111, P1136 IVT CONTROL SOLENOID VALVE
EC-551
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4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F1, F251 (bank 1)

Harness for open and short between intake valve timing control solenoid valve and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-551, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace intake valve timing control solenoid valve.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionBBS0051V
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12V DC between intake valve timing control solenoid
valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationBBS0051W
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-173, "TIMING CHAIN" .
Terminal Resistance
1 and 2 7.0 - 7.5Ω [at 20°C (68°F)]
1 or 2 and ground∞Ω
(Continuity should not exist.)
PBIB0193E
PBIB2275E

EM-2 CAMSHAFT ............................................................... 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSPECTION AFTER REMOVAL ........................ 44
INSTALLATION .................................................... 47
INSPECTION AFTER INSTALLATION ................ 49
Valve Clearance ...................................................... 50
INSPECTION ....................................................... 50
ADJUSTMENT .................................................... 51
TIMING CHAIN .......................................................... 53
Removal and Installation ........................................ 53
REMOVAL ........................................................... 54
INSPECTION AFTER REMOVAL ........................ 57
INSTALLATION .................................................... 58
OIL SEAL .................................................................. 62
Removal and Installation of Valve Oil Seal ............. 62
REMOVAL ........................................................... 62
INSTALLATION .................................................... 62
Removal and Installation of Front Oil Seal ............. 63
REMOVAL ........................................................... 63
INSTALLATION .................................................... 63
Removal and Installation of Rear Oil Seal .............. 64
REMOVAL ........................................................... 64
INSTALLATION .................................................... 64
CYLINDER HEAD ..................................................... 65
On-Vehicle Service ................................................. 65
CHECKING COMPRESSION PRESSURE ......... 65
Removal and Installation ........................................ 66
REMOVAL ........................................................... 66
INSPECTION AFTER REMOVAL ........................ 67
INSTALLATION .................................................... 68
INSPECTION AFTER INSTALLATION ................ 68
Disassembly and Assembly .................................... 70
DISASSEMBLY ................................................... 70
ASSEMBLY ......................................................... 71
Inspection After Disassembly ................................. 72
VALVE DIMENSIONS .......................................... 72
VALVE GUIDE CLEARANCE .............................. 73
VALVE GUIDE REPLACEMENT ......................... 73
VALVE SEAT CONTACT ..................................... 75
VALVE SEAT REPLACEMENT ........................... 75
VALVE SPRING SQUARENESS ......................... 76
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 76
ENGINE ASSEMBLY ................................................ 77
Removal and Installation ........................................ 77
REMOVAL ........................................................... 78
INSTALLATION .................................................... 79
INSPECTION AFTER INSTALLATION ................ 80
CYLINDER BLOCK ................................................... 81
Disassembly and Assembly .................................... 81
DISASSEMBLY ................................................... 82
ASSEMBLY ......................................................... 86
How to Select Piston and Bearing .......................... 91
DESCRIPTION .................................................... 91
HOW TO SELECT PISTON ................................. 92
HOW TO SELECT CONNECTING ROD BEAR-ING ....................................................................... 92
HOW TO SELECT MAIN BEARING .................... 95
Inspection After Disassembly .................................. 99
CRANKSHAFT END PLAY .................................. 99
CONNECTING ROD SIDE CLEARANCE ........... 99
PISTON TO PISTON PIN OIL CLEARANCE ....... 99
PISTON RING SIDE CLEARANCE ...................100
PISTON RING END GAP ..................................100
CONNECTING ROD BEND AND TORSION .....101
CONNECTING ROD BIG END DIAMETER ......101
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................101
CYLINDER BLOCK DISTORTION ....................102
MAIN BEARING HOUSING INNER DIAMETER .103
PISTON TO CYLINDER BORE CLEARANCE ..103
CRANKSHAFT MAIN JOURNAL DIAMETER ...104
CRANKSHAFT PIN JOURNAL DIAMETER ......105
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT ...............................................................105
CRANKSHAFT RUNOUT ..................................105
CONNECTING ROD BEARING OIL CLEAR-
ANCE .................................................................105
MAIN BEARING OIL CLEARANCE ...................106
MAIN BEARING CRUSH HEIGHT ....................107
CONNECTING ROD BEARING CRUSH
HEIGHT .............................................................107
LOWER CYLINDER BLOCK MOUNTING BOLT
OUTER DIAMETER ...........................................107
CONNECTING ROD BOLT OUTER DIAMETER .107
SERVICE DATA AND SPECIFICATIONS (SDS) ....108
Standard and Limit ................................................108
GENERAL SPECIFICATIONS ...........................108
DRIVE BELT ......................................................108
EXHAUST MANIFOLD ......................................108
SPARK PLUG ....................................................108
CYLINDER HEAD ..............................................108
VALVE ................................................................109
CAMSHAFT AND CAMSHAFT BEARING .........113
CYLINDER BLOCK ............................................113
PISTON, PISTON RING AND PISTON PIN ......114
CONNECTING ROD ..........................................115
CRANKSHAFT ...................................................115
MAIN BEARING .................................................117
CONNECTING ROD BEARING .........................118
VQ
PRECAUTIONS .......................................................119
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................119
OPERATION PROCEDURE ..............................119
Precautions for Drain Engine Coolant ...................119
Precautions for Disconnecting Fuel Piping ...........119
Precautions for Removal and Disassembly ..........119
Precautions for Inspection, Repair and Replace-
ment ......................................................................119
Precautions for Assembly and Installation ............119

EM-3
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Parts Requiring Angle Tightening ......................... 120
Precautions for Liquid Gasket .............................. 120
REMOVAL OF LIQUID GASKET SEALING ...... 120
LIQUID GASKET APPLICATION PROCEDURE . 120
PREPARATION ....................................................... 122
Special Service Tools ........................................... 122
Commercial Service Tools .................................... 124
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 126
NVH Troubleshooting — Engine Noise ................ 126
Use the Chart Below to Help You Find the Cause
of the Symptom. ................................................... 127
DRIVE BELTS ......................................................... 128
Checking Drive Belts ............................................ 128
Tension Adjustment .............................................. 128
ALTERNATOR AND A/C COMPRESSOR BELT . 129
POWER STEERING OIL PUMP BELT ............. 129
Removal and Installation ...................................... 129
REMOVAL ......................................................... 129
INSTALLATION ................................................. 129
AIR CLEANER AND AIR DUCT ............................. 131
Removal and Installation ...................................... 131
REMOVAL ......................................................... 131
INSPECTION AFTER REMOVAL ..................... 132
INSTALLATION ................................................. 132
Changing Air Cleaner Filter .................................. 132
REMOVAL ......................................................... 132
INSTALLATION ................................................. 132
INTAKE MANIFOLD COLLECTOR ........................ 133
Removal and Installation ...................................... 133
REMOVAL ......................................................... 134
INSPECTION AFTER REMOVAL ..................... 136
INSTALLATION ................................................. 136
INTAKE MANIFOLD ............................................... 138
Removal and Installation ...................................... 138
REMOVAL ......................................................... 138
INSPECTION AFTER REMOVAL ..................... 139
INSTALLATION ................................................. 139
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... 140
Removal and Installation ...................................... 140
REMOVAL ......................................................... 140
INSPECTION AFTER REMOVAL ..................... 142
INSTALLATION ................................................. 142
OIL PAN AND OIL STRAINER ............................... 145
Removal and Installation ...................................... 145
REMOVAL ......................................................... 145
INSPECTION AFTER REMOVAL ..................... 148
INSTALLATION ................................................. 148
INSPECTION AFTER INSTALLATION ............. 150
IGNITION COIL ....................................................... 152
Removal and Installation ...................................... 152
REMOVAL ......................................................... 152
INSTALLATION ................................................. 152
SPARK PLUG (PLATINUM-TIPPED TYPE) ........... 153
Removal and Installation ...................................... 153
REMOVAL ......................................................... 153
INSPECTION AFTER REMOVAL ..................... 153
INSTALLATION ................................................. 154FUEL INJECTOR AND FUEL TUBE ......................155
Removal and Installation ......................................155
REMOVAL .........................................................155
INSTALLATION .................................................157
INSPECTION AFTER INSTALLATION ..............159
ROCKER COVER ...................................................160
Removal and Installation ......................................160
REMOVAL .........................................................160
INSTALLATION .................................................161
FRONT TIMING CHAIN CASE ...............................163
Removal and Installation ......................................163
REMOVAL .........................................................163
INSTALLATION .................................................166
INSPECTION AFTER INSTALLATION ..............171
TIMING CHAIN ........................................................173
Removal and Installation ......................................173
REMOVAL .........................................................174
INSPECTION AFTER REMOVAL .....................180
INSTALLATION .................................................181
INSPECTION AFTER INSTALLATION ..............191
CAMSHAFT ............................................................192
Removal and Installation ......................................192
REMOVAL .........................................................192
INSPECTION AFTER REMOVAL .....................194
INSTALLATION .................................................197
INSPECTION AFTER INSTALLATION ..............201
Valve Clearance ...................................................202
INSPECTION ....................................................202
ADJUSTMENT ..................................................205
OIL SEAL ................................................................207
Removal and Installation of Valve Oil Seal ...........207
REMOVAL .........................................................207
INSTALLATION .................................................207
Removal and Installation of Front Oil Seal ...........208
REMOVAL .........................................................208
INSTALLATION .................................................208
Removal and Installation of Rear Oil Seal ............208
REMOVAL .........................................................208
INSTALLATION .................................................209
CYLINDER HEAD ...................................................210
On-Vehicle Service ...............................................210
CHECKING COMPRESSION PRESSURE .......210
Removal and Installation ......................................211
REMOVAL .........................................................211
INSPECTION AFTER REMOVAL .....................212
INSTALLATION .................................................213
INSPECTION AFTER INSTALLATION ..............215
Disassembly and Assembly ..................................215
DISASSEMBLY .................................................216
ASSEMBLY .......................................................216
Inspection After Disassembly ...............................218
VALVE DIMENSIONS ........................................218
VALVE GUIDE CLEARANCE ............................218
VALVE GUIDE REPLACEMENT .......................219
VALVE SEAT CONTACT ...................................220
VALVE SEAT REPLACEMENT .........................220
VALVE SPRING SQUARENESS .......................221
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD .............................221

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
EM-13
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Use the Chart Below to Help You Find the Cause of the Symptom.BBS0058R
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-50
Rattle C A — A B CCamshaft
bearing
noiseCamshaft journal oil
clearance
Camshaft runoutEM-44EM-44
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—BB—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-99
EM-101
Slap or
rapA ——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-104EM-100
EM-100
EM-101
Knock A B C B B BConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-101EM-105
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-106EM-105
Front of
engine
Front
coverTapping or
tickingA A —BBBTiming
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-57
EM-53
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belt
(Sticking
or slip-
ping)Drive belt deflection
EM-14
CreakingA B ABABDrive belt
(Slipping)Idler pulley bearing
operation
Squall
CreakA B —BABWater
pump
noiseWater pump operationCO-22,
"WATER
PUMP"

CAMSHAFT
EM-41
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CAMSHAFTPFP:13001
Removal and InstallationBBS00595

Refer to GI-10, "Components" for symbol marks in the figure.
NOTE:
This section describes removal/installation procedure of camshaft without removing front cover. If front cover
is removed or installed, removal of camshaft bracket (No. 1) is easier before step 9 and installation is easier
after step 3. Regarding removal and installation of front cover, refer to EM-53, "
TIMING CHAIN" .
REMOVAL
1. Release fuel pressure. Refer to EC-49, "FUEL PRESSURE RELEASE" .
2. Remove the following parts.

Engine cover; Refer to EM-19, "INTAKE MANIFOLD" .

Ignition coil; Refer to EM-31, "IGNITION COIL" .

Rocker cover; Refer to EM-39, "ROCKER COVER" .
3. Remove reservoir tank of radiator from bracket, and move it aside. Refer to CO-13, "
RADIATOR" .
1. Front cover 2. Chain guide 3. Chain tensioner
4. Spring 5. Chain tensioner plunger 6. O-ring
7. Camshaft bracket (No. 1) 8. Camshaft (INT) 9. Camshaft bracket (No. 2 to 5)
10. Camshaft sprocket (INT) 11. Oil ring 12. O-ring
13.Intake valve timing control solenoid
valve14. Intake valve timing control cover 15. O-ring
16. Camshaft position sensor (PHASE) 17. O-ring 18. Camshaft (EXH)
19. Valve lifter 20. Camshaft sprocket (EXH)
A. Refer to EM-47
PBIC4734E

EM-42
[QR]
CAMSHAFT

4. Remove reservoir tank of power steering oil pump from bracket, and move power steering piping aside.
Refer to PS-39, "
HYDRAULIC LINE" .
CAUTION:
To avoid power steering fluid leakage, temporarily fix reservoir tank of power steering oil pump
vertically.
5. Remove intake valve timing control cover with the following procedure:
a. Disconnect intake valve timing control solenoid valve harness connector.
b. Disconnect ground cables and remove harness clip.
c. Remove intake valve timing control solenoid valve, if necessary.
d. Loosen bolts in reverse order as shown in the figure.
e . U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] o r e q u i v a l e n t t o o l t o c u t l i q -
uid gasket for removal.
CAUTION:
Be careful not to damage the mating surfaces.
6. Pull chain guide between camshaft sprockets out through front cover.
7. Set No. 1 cylinder at TDC on its compression stroke with the following procedure:
a. Remove splash guard (RH).
b. Rotate crankshaft pulley clockwise and align TDC mark to timing
indicator on front cover.
c. At the same time, make sure that the mating marks on camshaft
sprockets are located as shown in the figure.

If not, rotate crankshaft pulley one more turn to align mating
marks to the positions in the figure.
8. Remove camshaft sprockets with the following procedure:
a. Put indelible paint marks on timing chain link plate aligning with the mating marks on camshaft sprockets.
KBIA0085E
KBIA0190E
PBIC2351E