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plug connector (boot).
11410047.tiff
The coils are removed by lifting the swivel latch
connector retainer to release the wiring har-
ness, apply a slight twist and lift the assembly
upwards.
NGK DCPR8EKP dual electrode spark plugs
are used.
11410048.bmp
26
M Engines - S54B32
Clutch Assembly: The S54 clutch assembly is
specially designed to transfer the high torque to
the driveline and dampen vibrations throughout
the rpm range.
The clutch assembly consists of:
Hydraulically Dampened Dual-Mass Flywheel
Diaphragm Type Pressure Plate and Drive Disk
11410048.tiff
1
1
4
1
4
8
.
t
i
f
f
Exhaust System: The US S54 uses two high
performance stainless steel exhaust manifolds.
The catalytic converters are integral with each
exhaust manifold.
Each exhaust manifold/catalyst contains a pre
(1) and post (2) oxygen sensor. The sensors
require a Special Tool (crescent wrench with
swivel adapter) for removal.
The E46 M3 exhaust system is a dual channel
up to the muffler. By using the M-mobility kit,
11410049.tiff
additional clearance is provided for the 40 liter
half-shell muffler with four outlets. The M road-
ster and M coupe have separate dual mufflers
E46 M3 Shown
11410048.tiff
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M Engines - S54B32
Review Questions
1. What is the valve clearance and at what temperature should it be checked?
Intake __________ Exhaust __________ Engine Temperature _________
2. The crankshaft mounted impulse wheel on the S54 provides:
________________ _________________ _________________ ________________
3. What does the term  cracked connecting rod mean?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
4. What is the function(s) of the oil pumps on the S54?
______________________________ ______________________________
5. Regarding the Crankcase Ventilation System, what is the purpose of the Check Valve
in the oil return line from the intake manifold?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
6. When installing the camshafts, they should be installed based on what visual sight?
________________________________________________________________________
________________________________________________________________________
7. What is unique about the exhaust finger (rocker) shaft?
________________________________________________________________________
8. What are the two differences between the intake and exhaust valves?
_______________________________ __________________________________
9. What must be  aligned with the radial piston high pressure pump when installing the
VANOS unit? ____________________________________________________________
10. Where is the fuel pressure tested on the E46 M3 and what is the nominal pressure?
_______________________________________________________________________
_______________________________________________________________________
28
M Engines - S54B32 [ Pobierz całość w formacie PDF ]