ENGINE LUBRICATION SYSTEM

B ENGINE

ENGINE LUBRICATION SYSTEM

SECTION LU LU

E
CONTENTS
PRECAUTIONS .......................................................... 2 OIL COOLER ............................................................ 12 F
Precautions for Battery Service ................................ 2 Removal and Installation ........................................ 12
Precautions for Liquid Gasket .................................. 2 REMOVAL ........................................................... 12
LIQUID GASKET APPLICATION PROCEDURE..... 2 INSPECTION AFTER REMOVAL ....................... 13 G
PREPARATION ........................................................... 3 INSTALLATION ................................................... 13
Special Service Tools ............................................... 3 INSPECTION AFTER INSTALLATION ................ 13
Commercial Service Tools ........................................ 3 OIL PUMP ................................................................. 14
H
LUBRICATION SYSTEM ............................................ 4 Removal and Installation ........................................ 14
Lubrication Circuit .................................................... 4 REMOVAL ........................................................... 14
System Chart ........................................................... 6 INSTALLATION ................................................... 14
ENGINE OIL ............................................................... 8 INSPECTION AFTER INSTALLATION ................ 14 I
Inspection ................................................................. 8 Disassembly and Assembly .................................... 14
ENGINE OIL LEVEL ............................................. 8 DISASSEMBLY ................................................... 14
ENGINE OIL APPEARANCE ................................ 8 INSPECTION AFTER DISASSEMBLY ................ 15 J
ENGINE OIL LEAKAGE ........................................ 8 ASSEMBLY ......................................................... 16
OIL PRESSURE CHECK ...................................... 9 SERVICE DATA AND SPECIFICATIONS (SDS) ...... 17
Changing Engine Oil .............................................. 10 Standard and Limit .................................................. 17
K
OIL FILTER ................................................................11 OIL PRESSURE .................................................. 17
Removal and Installation .........................................11 OIL CAPACITY (APPROXIMATE) ....................... 17
REMOVAL ............................................................11 OIL PUMP ........................................................... 17
INSTALLATION ....................................................11 REGULATOR VALVE .......................................... 17 L
INSPECTION AFTER INSTALLATION ................11 Tightening Torque ................................................... 17

Revision: 2004 December LU-1 2005 350Z

 PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Battery Service ABS00B4O

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for Liquid Gasket ABS009Z7

LIQUID GASKET APPLICATION PROCEDURE

1. Removal old liquid gasket adhering to the liquid gasket application surface and the mating surface.
● Remove liquid gasket completely from the liquid gasket application surface, mounting bolts, and bolt
holes.
2. Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating
use) to remove adhering moisture, grease and foreign materials.
3. Apply liquid gasket to the liquid gasket application surface.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-47, "RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
● Within five minutes of liquid gasket application, install the mating component.

● If liquid gasket protrudes, wipe it off immediately.

● Do not retighten mounting bolts or nuts after the installation.

● After 30 minutes or more have passed from the installation, fill engine oil and engine coolant.

Revision: 2004 December LU-2 2005 350Z

 PREPARATION

PREPARATION PFP:00002
A
Special Service Tools ABS009Z8

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number LU
(Kent-Moore No.) Description
Tool name

ST25051001 Measuring oil pressure

C
(J25695-1) Maximum measuring range: 2,452 kPa (25
Oil pressure gauge 2
kg/cm , 356 psi)

NT050

ST25052000 Adapting oil pressure gauge to oil pan (upper)

E
(J25695-2)
Hose
F

S-NT559
G
KV10115801 Removing oil filter
(J38956) a: 64.3 mm (2.531 in)
Oil filter wrench
H

I
S-NT375

WS39930000 Pressing the tube of liquid gasket

( — )
Tube presser J

K
NT052

L
Commercial Service Tools ABS009Z9

Tool name Description M

Power tool Loosening nuts and bolts

PBIC0190E

Deep socket Removing and installing oil pressure sensor

a: 24 mm (0.94 in)

PBIC2072E

Revision: 2004 December LU-3 2005 350Z

 LUBRICATION SYSTEM

LUBRICATION SYSTEM PFP:15010

Lubrication Circuit ABS009ZA

NOTE:
To identify 35th Anniversary, refer to GI-52, "Application Item" .
Except for 35th Anniversary

PBIC1933E

Revision: 2004 December LU-4 2005 350Z

 LUBRICATION SYSTEM

For 35th Anniversary

A

LU

PBIC3486E
I

Revision: 2004 December LU-5 2005 350Z

 LUBRICATION SYSTEM

System Chart ABS009ZB

NOTE:
To identify 35th Anniversary, refer to GI-52, "Application Item" .
Except for 35th Anniversary

PBIC2071E

Revision: 2004 December LU-6 2005 350Z

 LUBRICATION SYSTEM

For 35th Anniversary

A

LU

PBIC3487E
I

Revision: 2004 December LU-7 2005 350Z

 ENGINE OIL

ENGINE OIL PFP:KLA92

Inspection ABS009ZC

NOTE:
To identify 35th Anniversary, refer to GI-52, "Application Item" .
ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within
the range shown in the figure.
3. If it is out of range, adjust it.

PBIC3101E

NOTE:
When checking oil level, insert oil level gauge with its tip aligned with
oil level gauge guide on cylinder head. (In the figure, air cleaner case
and air duct are removed.)

KBIA1343E

ENGINE OIL APPEARANCE

● Check engine oil for white turbidity or heavy contamination.
● If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for oil leakage around the following areas:
● Oil pans (lower and upper)
● Oil pan drain plug
● Oil pressure sensor
● Oil filter
● Oil cooler
● Water pump cover
● Chain tensioner cover
● Intake valve timing control solenoid valve
● Intake valve timing control cover (Except for 35th Anniversary)
● Valve timing control cover (For 35th Anniversary)
● Mating surface between cylinder head and rocker cover
● Mating surface between front timing chain case and rear timing chain case
● Mating surface between rear timing chain case and cylinder head
Revision: 2004 December LU-8 2005 350Z
 ENGINE OIL

● Mating surface between rear timing chain case and cylinder block.
● Mating surface between rear timing chain case and oil pan (upper) A
● Mating surface between cylinder block and cylinder head
● Crankshaft oil seals (front and rear)
LU
● Camshaft position sensor (PHASE)
OIL PRESSURE CHECK
WARNING: C
● Be careful not to burn yourself, as engine oil may be hot.
● Oil pressure check should be done in “Neutral position” (M/T models) or “Parking position” (A/T
models). D
1. Check the engine oil level. Refer to LU-8, "ENGINE OIL LEVEL" .
2. Remove undercover with power tool.
3. Disconnect harness connector at oil pressure sensor, and E
remove oil pressure sensor using deep socket (commercial ser-
vice tool).
CAUTION: F
Do not drop or shock oil pressure sensor.

PBIC1127E H

4. Install the oil pressure gauge [SST] and hose [SST].

I

SLC926

L
5. Start the engine and warm it up to normal operating temperature.
6. Check the engine oil pressure with engine running under no-load.
NOTE: M
When the engine oil temperature is low, the engine oil pressure becomes high.
Engine oil pressure [Engine oil temperature at 80 °C (176 °F)]
Engine speed (rpm) Approximate discharge pressure [kPa (kg/cm2 , psi)]
Idle speed More than 98 (1.0, 14)
2,000 More than 294 (3.0, 43)

If difference is extreme, check engine oil passage and oil pump for engine oil leaks.
7. After the inspections, install oil pressure sensor as follows:
a. Remove old liquid gasket adhering to oil presser sensor and the mating surface.
b. Apply liquid gasket and tighten oil pressure sensor to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-47, "RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .

: 12.3 - 17.2 N·m (1.25 - 1.75 kg-m, 9 - 12 ft-lb)

c. After warming up engine, make sure there is no leakage of engine oil with running engine.

Revision: 2004 December LU-9 2005 350Z

 ENGINE OIL

Changing Engine Oil ABS009ZD

WARNING:
● Be careful not to burn yourself, as engine oil may be hot.
● Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct
skin contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand
cleaner as soon as possible.
1. Warm up engine, put vehicle horizontally and check for oil leakage from engine components. Refer to LU-
8, "ENGINE OIL LEAKAGE" .
2. Stop the engine and wait for 10 minutes.
3. Loosen oil filler cap and then remove drain plug.
4. Drain engine oil.
5. Install drain plug with new washer. Refer to EM-28, "OIL PAN AND OIL STRAINER" .
CAUTION:
Be sure to clean drain plug and install with new washer.
Oil pan drain plug:
: 29.4 - 39.2 N·m (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
6. Refill with new engine oil.
Engine oil specification and viscosity:
Refer to MA-12, "RECOMMENDED FLUIDS AND LUBRICANTS" .
Engine oil capacity (Approximate):
Unit: (US qt, lmp qt)
With oil filter change 4.7 (5, 4-1/8)
Drain and refill
Without oil filter change 4.4 (4-5/8, 3-7/8)
Dry engine (Overhaul) 5.4 (5-3/4, 4-3/4)

CAUTION:
● When filling engine oil, do not pull out oil level gauge.

● The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.
● Always use oil level gauge to determine the proper amount of engine oil in the engine.

7. Warm up engine and check area around drain plug and oil filter for oil leakage.
8. Stop engine and wait for 10 minutes.
9. Check the engine oil level. Refer to LU-8, "ENGINE OIL LEVEL" .

Revision: 2004 December LU-10 2005 350Z

 OIL FILTER

OIL FILTER PFP:15208

A
Removal and Installation ABS009ZE

REMOVAL
1. Remove undercover with power tool.
LU
2. Using oil filter wrench [SST], remove oil filter.
CAUTION:
● Oil filter is provided with relief valve. Use Genuine NIS-
C
SAN Oil Filter or equivalent.
● Be careful not to get burned when engine and engine oil
may be hot.
D
● When removing, prepare a shop cloth to absorb any
engine oil leakage or spillage.
● Do not allow engine oil to adhere to drive belts.
E
● Completely wipe off any engine oil that adheres to engine PBIC0819E
and vehicle.
INSTALLATION F
1. Remove foreign materials adhering to oil filter installation surface.
2. Apply engine oil to the oil seal contact surface of new oil filter.
G

SMA010

J
3. Screw oil filter manually until it touches the installation surface,
then tighten it by 2/3 turn. Or tighten to specification.
Oil filter: K
: 14.7 - 20.5 N·m (1.5 - 2.0 kg-m, 11 - 15 ft-lb)

M
SMA229B

INSPECTION AFTER INSTALLATION

1. Check the engine oil level. Refer to LU-8, "ENGINE OIL" .
2. Start engine, and check there is no leaks of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and adjust engine oil. Refer to LU-8, "ENGINE OIL" .

Revision: 2004 December LU-11 2005 350Z

 OIL COOLER

OIL COOLER PFP:21305

Removal and Installation ABS009ZF

PBIC2403E

1. Oil filter 2. Connector bolt 3. Oil cooler

4. O-ring 5. Relief valve 6. Oil pan (upper) right side
7. Water hose 8. Water hose 9. Water pipe
10. Water hose

WARNING:
Be careful not to get burn yourself, as engine oil and engine coolant are hot.
REMOVAL
NOTE:
When removing oil cooler only, step 2 is unnecessary.
1. Remove undercover with power tool.
2. Drain engine coolant from radiator and cylinder block. Refer to CO-10, "Changing Engine Coolant" and
EM-139, "DISASSEMBLY" .
NOTE:
Perform this step when removing water pipes.
3. Remove oil filter. Refer to LU-11, "OIL FILTER" .
CAUTION:
Do not spill engine oil on drive belts.
4. Disconnect water hoses from oil cooler.
● When removing oil cooler only, pinching water hoses near oil cooler to prevent engine coolant spilling.

CAUTION:
● Perform this step when engine is cold.

● Do not spill engine coolant on drive belts.

5. Remove connector bolt, and remove oil cooler.

Revision: 2004 December LU-12 2005 350Z

 OIL COOLER

CAUTION:
Do not spill engine oil to rubber parts such as drive belts and engine mounting insulator. A
6. Remove water pipes, as necessary.
INSPECTION AFTER REMOVAL
LU
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing through engine coolant inlet. If necessary,
replace oil cooler.
C
Relief Valve
Check relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove
relief valve by prying it out with suitable tool. Install a new relief valve in place by tapping it. D
INSTALLATION
Note the following, and install in the reverse order of removal.
E
● Make sure that no foreign objects are adhering to the installation planes of oil cooler and oil pan (upper).
● Align cutout on oil cooler with protrusion on oil pan (upper) side,
and tighten connector bolt.
F

KBIA1342E

INSPECTION AFTER INSTALLATION I

1. Check the engine oil level and the engine coolant level, and adjust engine oil and engine coolant. Refer to
LU-8, "ENGINE OIL" and CO-10, "ENGINE COOLANT" .
2. Start engine, and make sure that there is no leaks of engine oil or engine coolant. J
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and the engine coolant level again. Refer to LU-8, "ENGINE OIL" and CO-10,
"ENGINE COOLANT" . K

Revision: 2004 December LU-13 2005 350Z

 OIL PUMP

OIL PUMP PFP:15010

Removal and Installation ABS009ZG

SBIA0481E

1. Oil pump body 2. Oil pump outer rotor 3. Oil pump inner rotor
4. Oil pump cover 5. Regulator valve plug 6. Regulator valve spring
7. Regulator valve

REMOVAL
1. Remove oil pans (lower and upper) and oil strainer. Refer to EM-28, "OIL PAN AND OIL STRAINER" .
2. Remove front timing chain case and timing chain (primary). Refer to EM-58, "TIMING CHAIN" .
3. Remove oil pump assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
● When installing, align crankshaft flat faces with inner rotor flat faces.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-8, "ENGINE OIL" .
2. Start engine, and check there is no leaks of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and adjust engine oil. Refer to LU-8, "ENGINE OIL" .
Disassembly and Assembly ABS009ZH

DISASSEMBLY
1. Remove oil pump cover.
2. Remove oil pump inner rotor and oil pump outer rotor from oil pump body.
3. After removing regulator valve plug, remove regulator valve spring and regulator valve.

Revision: 2004 December LU-14 2005 350Z

 OIL PUMP

INSPECTION AFTER DISASSEMBLY

Oil Pump Clearance A
● Measure the clearance with feeler gauge.
– Clearance between oil pump outer rotor and oil pump body
(Position “1”) LU

Standard : 0.114 - 0.260 mm (0.0045 - 0.0102 in)

– Tip clearance between oil pump inner rotor and oil pump outer C
rotor (Position “2”)
Standard : Below 0.180 mm (0.0071 in)
D

SLC932A
E
● Measure the clearance with feeler gauge and straightedge.
– Side clearance between oil pump inner rotor and oil pump body
(Position “3”) F

Standard : 0.030 - 0.070 mm (0.0012 - 0.0028 in)

– Side clearance between oil pump outer rotor and oil pump body G
(Position “4”)
Standard : 0.050 - 0.110 mm (0.0020 - 0.0043 in)
H

SLC933A
I
● Calculate the clearance between oil pump inner rotor and oil pump body as follows:
OIL PUMP BODY INNER DIAMETER
J
– Measure the inner diameter of oil pump body with inside
micrometer. (Position “5”)
OIL PUMP INNER ROTOR OUTER DIAMETER
K
– Measure the outer diameter of protruded portion of oil pump
inner rotor with micrometer. (Position “6”)
L

M
PBIC0821E

OIL PUMP INNER ROTOR TO OIL PUMP BODY CLEARANCE

– (Clearance) = (Oil pump body inner diameter) – (Oil pump inner rotor outer diameter)
Standard : 0.045 - 0.091 mm (0.0018 - 0.0036 in)
● If measured/calculated values are out of the standard, replace oil pump assembly.

Revision: 2004 December LU-15 2005 350Z

 OIL PUMP

Regulator Valve Clearance

(Clearance) = (Valve hole diameter) – (Regulator valve outer diame-
ter)
Standard : 0.040 - 0.097 mm (0.0016 - 0.0038 in)
● If the calculated value is out of the standard, replace oil pump
assembly.
CAUTION:
● Coat regulator valve with engine oil.
● Make sure that it falls smoothly into valve hole by its own
weight.
PBIC0822E

ASSEMBLY
Note the following, and assemble in the reverse order of disassembly.
● Install oil pump inner rotor with the groove faced to oil pump
cover side.

PBIC0832E

Revision: 2004 December LU-16 2005 350Z

 SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS) PFP:00030

A
Standard and Limit ABS009ZI

OIL PRESSURE
Engine speed Approximate discharge pressure* LU
rpm kPa (kg/cm2 , psi)
Idle speed More than 98 (1.0, 14)
2,000 More than 294 (3.0, 43) C
*: Engine oil temperature at 80°C (176°F)

OIL CAPACITY (APPROXIMATE) D

Unit: (US qt, Imp qt)
With oil filter change 4.7 (5, 4-1/8)
Drain and refill
Without oil filter change 4.4 (4-5/8, 3-7/8) E
Dry engine (Overhaul) 5.4 (5-3/4, 4-3/4)

OIL PUMP F
Unit: mm (in)
Oil pump body to oil pump outer rotor radial clearance 0.114 - 0.260 (0.0045 - 0.0102)
Oil pump inner rotor to oil pump outer rotor tip clearance Below 0.180 (0.0071) G
Oil pump body to oil pump inner rotor side clearance 0.030 - 0.070 (0.0012 - 0.0028)
Oil pump body to oil pump outer rotor side clearance 0.050 - 0.110 (0.0020 - 0.0043)
Oil pump inner rotor to oil pump body clearance 0.045 - 0.091 (0.0018 - 0.0036)
H

REGULATOR VALVE
Unit: mm (in)
I
Regulator valve to oil pump body clearance 0.040 - 0.097 (0.0016 - 0.0038)

Tightening Torque ABS009ZJ

J
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*
Oil pressure sensor 12.3 - 17.2 (1.25 - 1.75, 9 - 12)
Oil pan drain plug 29.4 - 39.2 (3.0 - 4.0, 22 - 28) K
Oil cooler connector bolt 49.0 (5.0, 36)
Water pipe M6 bolt 9.6 (0.98, 85)*
L
M8 bolt 23.4 (2.4, 17)
Oil pump body 6.9 (0.70, 61)*
Oil pump cover 7.0 (0.71, 62)* M
Regulator valve plug 52.4 (5.3, 39)

Revision: 2004 December LU-17 2005 350Z

 SERVICE DATA AND SPECIFICATIONS (SDS)

Revision: 2004 December LU-18 2005 350Z