Infiniti F50. Manual — part 556
EX-1
EXHAUST SYSTEM
B ENGINE
CONTENTS
C
D
E
F
G
H
I
J
K
L
M
SECTION
A
EX
EXHAUST SYSTEM
PREPARATION . . . . . . . . . . . . . . ... 2
Special Service Tool . . . . . . . . . . . . . 2
Commercial Service Tools . . . . . . . . . . 2
EXHAUST SYSTEM . . . . . . . . . . . . ... 3
Checking Exhaust System . . . . . . . . . ... 3
Removal and Installation . . . . . . . . . . .. 3
DUAL MODE MUFFLER . . . . . . . . . . . 5
Removal and Installation . . . . . . . . . . .. 5
INSTALLATION . . . . . . . . . . . . . . 6
Trouble Diagnoses . . . . . . . . . . . . ... 7
EX-2
PREPARATION
PREPARATION
PFP:00002
Special Service Tool
EBS003GD
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tools
EBS003GE
Tool number
(Kent-Moore No.)
Tool name
Description
KV10114400
(J-38365)
Heated oxygen sensor wrench
Loosening or tightening heated oxygen
sensors
a: 22 mm (0.87 in)
S-NT636
(Kent-Moore No.)
Tool name
Description
(J-43897-18)
(J-43897-12)
Heated oxygen sensor thread cleaner
Reconditioning the exhaust system threads
before installing a new heated oxygen sensor
(Use with anti-seize lubricant shown below.)
a: J-43897-18 (18 mm dia.) for zirconia
heated oxygen sensor
b: J-43897-12 (12 mm dia.) for titania
heated oxygen sensor
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)
Lubricating heated oxygen sensor thread
cleaning tool when reconditioning exhaust
system threads
Power tool
Loosening bolts and nuts
AEM488
AEM489
PBIC0190E
EXHAUST SYSTEM
EX-3
C
D
E
F
G
H
I
J
K
L
M
A
EX
EXHAUST SYSTEM
PFP:20100
Checking Exhaust System
EBS004VQ
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.
Removal and Installation
EBS001JQ
CAUTION:
●
Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat
resistance, corrosion resistance, and shape.
●
Perform the operation with the exhaust system fully cooled down because the system will be hot
just after the engine stops.
●
Be careful not to cut your hand on the insulator edge.
SMA211A
1.
Main muffler
2.
Actuator
3.
Gasket
4.
Ground cable
5.
Cable
6.
Mounting rubber
7.
Exhaust front tube
8.
Bracket
9.
Heated oxygen sensor 2 (bank 2)
PBIC0956E
EX-4
EXHAUST SYSTEM
REMOVAL
1.
Remove cable from exhaust control valve.
Refer to Dual mode muffler,
EX-5, "Removal and Installation"
2.
Disconnect each joint and mounting.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
●
Always replace exhaust gaskets with new ones when reassembling.
●
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
●
Before installing a new heated oxygen sensor, clean exhaust system threads using heated 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.
●
If the insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the insu-
lator, remove them.
●
When installing the insulator avoid large gaps or interference between the insulator and each
exhaust pipe.
●
Remove deposits and left over gasket material from the sealing surface of each connection. Con-
nect them securely to avoid gas leakage.
●
Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehi-
cle side. Check each part for abnormal interference, and then tighten them to the specified torque.
●
When installing each clamp, align the protrusion on the insulator with the clamp hole.
●
When installing each mounting rubber, avoid twisting or abnormal extension in up/down and right/
left directions.
●
Install mounting rubbers on rear main muffler as shown.
INSPECTION AFTER INSTALLATION
●
With the engine running, check exhaust tube joints for gas leakage and unusual noises.
●
Check to ensure that mounting brackets and mounting insulators are installed properly and free from
undue stress. Improper installation could result in excessive noise and vibration.
10.
Heated oxygen sensor 2 (bank 1) 11.
Ring gasket
12. Bracket
13.
Bracket
14.
Gasket
15. Center muffler
PBIC0172E
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