Front cover NISSAN TEANA 2003 Repair Manual

EM-78
[QR]
ENGINE ASSEMBLY

REMOVAL
Outline
Remove engine and transaxle assembly with front suspension member from vehicle downward. Separate
front suspension member, and then separate engine and transaxle.
Preparation
1. Release fuel pressure. Refer to EC-49, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
3. Remove the following parts.

Hood assembly; Refer to BL-13, "HOOD" .

Undercover and splash guards (RH and LH)

Front road wheels and tires

Battery, battery tray and battery tray bracket; Refer to SC-4, "BATTERY" .

Drive belt; Refer to EM-14, "DRIVE BELTS" .

Air duct (inlet); Refer to EM-17, "AIR CLEANER AND AIR DUCT" .

Air cleaner case (upper) with mass air flow sensor and air duct assembly; Refer to EM-17, "AIR
CLEANER AND AIR DUCT" .

Alternator and alternator bracket; Refer to SC-27, "CHARGING SYSTEM" .

Radiator and radiator cooling fan assembly, reservoir tank of radiator and system hoses; Refer to CO-
13, "RADIATOR" .
4. Disconnect engine room harness connector from ECM side and set it aside for easier work.
5. Disconnect all vacuum hoses and air hoses connected to vehicle side at engine side.
Engine Room LH
1. Disconnect heater hose, and install plug it to prevent engine coolant from draining. Refer to CO-24,
"THERMOSTAT AND WATER CONTROL VALVE" .
2. Disconnect fuel feed hose, and plug it to prevent fuel from draining. Refer to EM-34, "
FUEL INJECTOR
AND FUEL TUBE" .
3. Disconnect control cable from transaxle. Refer to AT- 2 1 3 , "
SHIFT CONTROL SYSTEM" .
4. Disconnect B terminal harness of starter motor. Refer to SC-14, "
STARTING SYSTEM" .
Engine Room RH
1. Remove IPDM E/R and bracket. Refer to PG-17, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM)" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on vehicle side with a
rope to avoid putting load on it. Refer to ATC-134, "
Removal and Installation of Compressor" .
3. Remove reservoir tank of power steering oil pump. Temporarily secure it on engine side with a rope. Refer
to PS-39, "
HYDRAULIC LINE" .
Vehicle Underbody
1. Remove RH and LH front drive shafts. Refer to FAX-8, "FRONT DRIVE SHAFT" .
2. Remove exhaust front tube. Refer to EX-2, "
EXHAUST SYSTEM" .
3. Remove rear plate cover from oil pan (upper). Then remove bolts fixing drive plate to torque converter.
Refer to EM-26, "
OIL PAN AND OIL STRAINER" and AT- 2 4 1 , "TRANSAXLE ASSEMBLY" .
4. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to AT- 2 4 1 , "
TRAN-
SAXLE ASSEMBLY" .
5. Disconnect connecting rod for front stabilizer. Refer to FSU-5, "
FRONT SUSPENSION ASSEMBLY" .
6. Remove steering lower joint from steering gear. Refer to PS-12, "
STEERING COLUMN" .
7. Remove power steering fluid piping from front suspension member. Refer to PS-39, "
HYDRAULIC LINE"
.
8. Disconnect power steering fluid piping at a point between vehicle and engine, and install plug it to prevent
power steering fluid. Refer to PS-39, "
HYDRAULIC LINE" .

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
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Use the Chart Below to Help You Find the Cause of the Symptom.BBS004VL
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 noiseTy p e o f
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-202
Rattle C A — A B CCamshaft
bearing
noiseCamshaft runout
Camshaft journal oil
clearanceEM-194EM-195
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—B B—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-245
EM-247
Slap or
rapA——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-249EM-246
EM-246
EM-247
Knock ABCBBBConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-247EM-253
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-252EM-251
Front of
engine
Timin g
chain
caseTapping or
tickingAA—BBBTimin g
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-180
EM-173
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belts
(Sticking
or slip-
ping)Drive belts deflection
EM-128
CreakingABABABDrive belts
(Slipping)Idler pulley bearing
operation
Squall
CreakAB—BABWater
pump
noiseWater pump operationCO-46,
"WATER
PUMP"

EXHAUST MANIFOLD AND THREE WAY CATALYST
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3. Remove exhaust front tube mounting bracket and then remove exhaust front tube. Refer to EX-2,
"EXHAUST SYSTEM" .
4. Remove heat insulator.
5. Disconnect harness connector and remove heated oxygen sen-
sor 1 on both banks with heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor 1.
CAUTION:

Be careful not to damage heated oxygen sensor 1.

Discard any heated oxygen sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
NOTE:
Figure is shown as an example of left bank.
6. Disconnect harness connector and remove heated oxygen sen-
sor 2 on both banks with heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor 2.
CAUTION:

Be careful not to damage heated oxygen sensor 2.

Discard any heated oxygen sensor 2 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
7. Remove exhaust manifold covers (right and left banks) and three way catalyst covers.
8. Remove mounting bolts in the reverse order as shown in the fig-
ure to remove three way catalyst supports (right and left banks).
9. Remove three way catalysts (right and left banks) by loosening bolts first and then removing nuts.
CAUTION:
Handle carefully to avoid any shock to three way catalyst.
PBIC2503E
PBIC2462E
PBIC2544E
PBIC2463E

OIL PAN AND OIL STRAINER
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationBBS004VU

Refer to GI-10, "Components" for symbol marks in the figure.
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine oil when engine is hot.
NOTE:
When removing oil pan (lower) or oil strainer only, take step 1 then step 10 and 11.
1. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine oil on drive belts.
2. Drain engine coolant. Refer to CO-34, "
Changing Engine Coolant" .
1. Oil pan (upper) 2. O-ring 3. Oil pan gasket (front)
4. Oil pressure switch 5.Plug (VQ23DE)
Relief valve (VQ35DE)6. O-ring
7. Oil cooler 8. Connector bolt 9. Oil filter
10. Oil strainer 11. Drain plug 12. Drain plug washer
13. Oil pan (lower) 14. Rear plate cover 15. Harness bracket
16. Crankshaft position sensor (POS) 17. Seal rubber 18. Oil pan gasket (rear)
A. Refer to LU-22
B. To oil pump C. Oil pan side
D. VQ23DE E. VQ35DE
PBIC4533J

EM-146
[VQ]
OIL PAN AND OIL STRAINER

CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Remove the following:

Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .

Splash guard (RH)

Exhaust front tube; Refer to EX-2, "EXHAUST SYSTEM" .

Drive belts; Refer to EM-128, "DRIVE BELTS" .
4. Remove A/C compressor with piping connected, and temporarily secure it to aside. Refer to ATC-133,
"Components" .
5. Remove three way catalysts (right and left banks) from exhaust manifolds (right and left banks). Refer to
EM-140, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
6. Remove oil pressure switch. Refer to LU-20, "
OIL PRESSURE CHECK" .
7. Remove crankshaft position sensor (POS).
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensor in a location where it is exposed to magnetism.
8. Remove oil filter. Refer to LU-22, "
OIL FILTER" .
9. Remove oil cooler and water pipes (VQ35DE). Refer to LU-23, "
OIL COOLER (VQ35DE)" .
10. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
b. Insert seal cutter (SST) between oil pan (lower) and oil pan
(upper).
CAUTION:

Be careful not to damage the mating surfaces.

Do not insert screwdriver, this will damage the mating
surfaces.
c. Slide seal cutter by tapping on the side of the tool with hammer.
Remove oil pan (lower).
PBIC0782E
SEM365ED

FRONT TIMING CHAIN CASE
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FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationBBS004VZ
NOTE:

This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on vehicle.

When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (lower and upper) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in the reverse order of removal. Refer to
EM-173, "
TIMING CHAIN" .

Refer to EM-173, "TIMING CHAIN" for component parts location.
REMOVAL
1. Remove engine cover. Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .
2. Remove air duct (inlet), air cleaner case (upper) with mass air flow sensor and air duct assembly. Refer to
EM-131, "
AIR CLEANER AND AIR DUCT" .
3. Remove undercover and splash guard (RH).
4. Remove right side front road wheel and tire.
5. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine oil on drive belts.
6. Drain engine coolant from radiator. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
7. Remove intake manifold collectors (upper and lower). Refer to EM-133, "
INTAKE MANIFOLD COLLEC-
TOR" .
8. Remove drive belts. Refer to EM-128, "
DRIVE BELTS" .
9. Remove alternator. Refer to SC-27, "
CHARGING SYSTEM" .
10. Remove power steering oil pump from bracket with piping connected, and temporarily secure it to aside.
Refer to PS-29, "
POWER STEERING OIL PUMP" .
11. Remove power steering oil pump bracket. Refer to PS-29, "
POWER STEERING OIL PUMP" .
12. Remove idler pulley and bracket. Refer to EM-173, "
TIMING CHAIN" .
13. Separate engine harnesses removing their brackets from front timing chain case.
14. Remove rocker covers (right and left bank). Refer to EM-160, "
ROCKER COVER" .
NOTE:
When only timing chain (primary) is removed, rocker cover does not need to be removed.
15. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
NOTE:
When timing chain is not removed/installed, this step is not required.
a. Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
SEM918G

EM-164
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FRONT TIMING CHAIN CASE

b. Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown in the fig-
ure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure that No. 1 cylinder is at
its compression TDC, remove front timing chain case first. Then
check mating marks on camshaft sprockets. Refer to EM-181,
"INSTALLATION" .
16. Remove crankshaft pulley as follows:
a. Fix crankshaft with pulley holder (SST).
b. Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
17. Remove oil pan (lower). Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
18. Loosen two mounting bolts in front of oil pan (upper) in the
reverse order as shown in the figure.
19. Install oil pan (lower) temporarily.

Applying liquid gasket is unnecessary.
20. Support the oil pan (lower) bottom with jack.

Perform following operations with engine front side supported with jack.
CAUTION:
Put a piece of wood or something similar as the supporting surface, be careful not to damage oil
pan (lower).
21. Remove right and left intake valve timing control covers.
SEM418G
PBIC2475E
SEM915E
PBIC1637E

EM-166
[VQ]
FRONT TIMING CHAIN CASE

26. Remove O-rings from rear timing chain case.
27. Remove water pump cover and chain tensioner cover from front timing chain case.

Use seal cutter [SST: KV10111100] to cut liquid gasket for removal.
28. Remove front oil seal from front timing chain case using suitable
tool.

Use screwdriver for removal.
CAUTION:
Be careful not to damage front timing chain case.
29. Remove timing chain and related parts. Refer to EM-173, "
TIMING CHAIN" .
30. Use scraper to remove all traces of old liquid gasket from front
and rear timing chain cases and oil pan (upper), and liquid gas-
ket mating surfaces.
CAUTION:
Be careful not to allow gasket fragments to enter oil pan.

Remove old liquid gasket from bolt hole and thread.
INSTALLATION
1. Install timing chain and related parts. Refer to EM-173, "TIMING CHAIN" .
PBIC2548E
EMQ0032D
SEM737G
PBIC2084E

FRONT TIMING CHAIN CASE
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2. Hammer dowel pins (right and left) into front timing chain case
up to a point close to taper in order to shorten protrusion length.
3. Install new front oil seal on front timing chain case.

Apply new engine oil to both oil seal lip and dust seal lip.

Install it so that each seal lip is oriented as shown in the fig-
ure.

Using suitable drift [outer diameter: 60 mm (2.36 in)], press-fit
oil seal until it becomes flush with front timing chain case end
face.

Make sure the garter spring is in position and seal lip is not
inverted.
4. Install water pump cover and chain tensioner cover to front timing chain case.

Apply a continuous bead of liquid gasket with tube presser
[SST: WS39930000] to front timing chain case as shown in
the figure.
Use Genuine Liquid Gasket or equivalent.
5. Install front timing chain case as follows:
PBIC2615E
SEM715A
PBIC0790E
SEM744GA

EM-170
[VQ]
FRONT TIMING CHAIN CASE

e. Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.

There are two types of mounting bolt. Refer to the following
for locating bolts.
f. After all bolts tightening, retighten them to the specified torque in
numerical order as shown in the figure.
6. Install engine mounting bracket (RH) and engine mounting insulator (RH). Refer to EM-223, "
ENGINE
ASSEMBLY" .
7. Remove jack which supports the oil pan (lower) bottom.
8. Remove oil pan (lower).
9. Install two mounting bolts in front of oil pan (upper) in numerical
order as shown in the figure.
10. Install oil pan (lower). Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
11. Install right and left intake valve timing control covers as follows:
a. Install new seal rings in shaft grooves.
b. Apply a continuous bead of liquid gasket with tube presser [SST:
WS39930000] to intake valve timing control covers as shown in
the figure.
Use Genuine Liquid Gasket or equivalent.
c. Install new collared O-rings in front timing chain case oil holes
(left and right sides).
d. Being careful not to move seal rings from the installation grooves, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.M8 bolts : 1, 2
: 28.4 N·m (2.9 kg-m, 21 ft-lb)
M6 bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
: 17.2 N·m (1.8 kg-m, 13 ft-lb)
SEM730G
PBIC1637E
SBIA0492E
PBIC2631E