Infiniti F50. Manual - part 534

EXHAUST MANIFOLD AND THREE WAY CATALYST

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e.

Remove exhaust manifold cover.

f.

Loosen nuts in reverse order of illustration to remove exhaust
manifold and three way catalyst.

CAUTION:

Disregard the numerical order No.9 to 12 in removal.

3.

Remove exhaust manifold and three way catalyst (right bank)
loosening nuts in reverse order in the figure.

a.

Remove drive belt and alternator with power tool. Refer to 

SC-

19, "Removal and Installation"

 .

b.

Remove exhaust front tube with power tool. Refer to 

EX-3,

"Removal and Installation"

 .

c.

Remove nuts on bottom of right engine mounting insulator, and
lift up right side of engine approximately 3 cm (1.18 in) with transmission jack.

d.

Remove starter motor with power tool. Refer to 

SC-28, "Removal and Installation"

 .

e.

Support and lift up bottom of engine with transmission jack. Remove right engine mount insulator along
with right engine mount brackets.

f.

Remove exhaust manifold cover.

g.

Loosen nuts in reverse order of illustration to remove exhaust manifold and three way catalyst with power
tool.

CAUTION:

Disregard the numerical order No.9 to 12 in removal.

INSPECTION AFTER REMOVAL
Surface Distortion

Use a reliable straightedge and feeler gauge to check the flatness of
each exhaust manifold flange surface.

INSTALLATION

Install in the reverse order of removal paying attention to the following.

Exhaust Manifold Gasket

Install exhaust manifold gasket with its directional protrusion set upward. Refer to illustration of components
on former page.

Tightening Exhaust Manifold Nuts

●

Install exhaust manifold and three way catalyst in the numerical
order shown in the figure.

●

Tighten nuts No.1 to No.4 in two steps. Order No.9 to 12 shows
second step.

PBIC0022E

Limit

: 0.3mm (0.012in)

PBIC0023E

PBIC0022E

EM-24

EXHAUST MANIFOLD AND THREE WAY CATALYST

Installation of Heated Oxygen Sensor

CAUTION:

●

When using heated oxygen sensor wrench (KV10114400), tighten to the middle of specified torque
because length of tool may induce slight indication increase. (Do not tighten to the maximum
specified torque)

●

Before installing a new heated oxygen sensor, clean exhaust system threads using oxygen sensor
thread cleaner tool, J-43897-18 or J-43897-12, and apply anti-seize lubricant.

●

Do not over torque the heated oxygen sensor. Doing so may cause damage to the heated oxygen
sensor, resulting in the MIL coming on.

OIL PAN AND OIL STRAINER

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OIL PAN AND OIL STRAINER

PFP:11110

Removal and Installation

EBS001LC

REMOVAL

WARNING:

To avoid the danger of being scalded, never drain the engine oil when the engine is hot.

1.

Remove front tire.

2.

Remove hood assembly. Refer to 

BL-15, "Removal and Installation of Hood Assembly"

 .

3.

Remove engine undercover and engine cover with power tool.

4.

Drain engine oil. Refer to 

LU-7, "Changing Engine Oil"

 .

5.

Remove drive belts. Refer to 

EM-13, "Removal and Installation"

 .

6.

Remove auto tensioner of power steering oil pump belt. Refer to 

EM-14, "Drive Belt Auto Tensioner and

Idler Pulley"

 .

7.

Move power steering oil pump and remove power steering oil pump bracket.

8.

Remove oil filter. Refer to 

LU-8, "Removal and Installation"

 .

9.

Remove A/C compressor fitting bolts, and install A/C compressor temporarily on vehicle side with ropes or
equivalent.

10. Disconnect harness and wires of lower side of oil pan from oil pan.

11. Remove crankshaft position sensor (POS) from transmission.

CAUTION:

●

Do not drop or shock it.

●

Do not disassemble it.

SBIA0362E

1.

Oil pan

2.

O-ring

3.

Crankshaft position sensor (POS)

4.

O-ring

5.

Oil pressure switch

6.

Gasket

7.

Oil strainer

8.

Drain plug

9.

Washer

10.

Oil filter

11.

Rear plate cover

EM-26

OIL PAN AND OIL STRAINER

●

Do not let steel powders contact magnetic parts of sensor tips. 

●

Do not leave where magnetically effected.

12. Install engine slinger and hang engine assembly to secure position. Refer to 

EM-70, "Removal and Instal-

lation"

 .

13. Remove front suspension member. Refer to 

FSU-15, "FRONT SUSPENSION MEMBER"

 .

14. Remove oil pan in the order shown below.

a.

Remove rear plate cover.

b.

Remove transmission joint bolts (M12: 4 bolts) which pierce oil pan.

c.

Loosen oil pan bolts with power tool in reverse order of illustra-
tion to remove.
NOTE:
Exclude No.11 and No.17 in removal.

d.

Insert seal cutter between oil pan and cylinder block. Slide seal
cutter by tapping on side of the seal cutter with a hammer.
Remove oil pan.

15. Remove oil strainer.

INSPECTION AFTER REMOVAL

Clean oil strainer if any object attached.

INSTALLATION

1.

Install oil strainer.

2.

Install oil pan in the order below.

a.

Apply liquid gasket thoroughly as in illustration.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-46, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS"

 .

b.

Install new O-ring to oil pump and timing chain case side.

PBIC0194E

SEM365E

PBIC0195E