S&S Worldwide Automobile Parts - Manual (Page 6)

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CAUTION - Do not carry the crankcase by the studs. It
stresses the crankcase and studs in ways they are not
designed to handle. Also, it is easy to drop and damage
the case when it is carried by the studs.
8. Flywheel Assembly
S&S Twin Cam style crankcases are designed to
use any S&S Twin Cam style flywheel assembly, or
1999-2002 Harley-Davidson flywheel assembly.
NOTE - 2003-up Harley-Davidson flywheel assemblies will
not fit in S&S crankcases. For 2003, HD started using a flat
roller bearing on the sprocket shaft. S&S cases must use
Twin Cam style flywheel assemblies that use dual taper
roller bearings.
NOTE - 2003-up flat roller sprocket shaft bearing is not
compatible with S&S cases
CAUTION - It is not recommended to attempt using a
2003-up flywheel assembly by changing the sprocket
bearing from the flat roller style to the earlier dual taper
style. The sprocket bearing inner race of the 2003-up
sprocket shaft is a non-serviceable item, per the OEM
service manual. Attempting to remove the pressed on
sprocket bearing inner race from the sprocket shaft of
2003 Harley-Davidson flywheel assemblies can easily
result in serious damage to the flywheel assembly.
a. Sprocket shaft bearings: Use 1999-2002
style taper roller bearings, included with the
crankcase. They must be used with a 1999-
2002 style flywheel assembly, purchased
separately.
CAUTION- Installing and setting the clearances for
1999-2002 style taper roller bearings is a critical
operation. install and set clearances per 1999-2002
Twin Cam OEM service manual.
b. Pinion shaft bearing: Use 2003-up pinion
shaft bearing, part number H-D 24604-00.
Bearing is not included with the crankcase.
This bearing is not available from S&S at this
time, and needs to be obtained from Harley-
Davidson.
NOTES
● S&S crankcases secure the pinion bearing in place
with a snap ring. 2003 up OEM cases do not.
● 1999-2002 pinion shaft bearing is not compatible with
S&S crankcases. It has a larger outside diameter than the
2003-up style used by the S&S cases.
9. Camshaft And Cam Plate Installation
S&S Camshafts install using the instructions
packaged with them. Harley-Davidson camshafts
install per 1999-2003 OEM Twin Cam service manual.
10. S&S Reed Valve Installation
The S&S Reed Valve Assembly #31-2071 included
with the crankcase is an effective way to control internal air
pressures inside the crankcase, reducing oil carry over,
blow-by, and oil leakage. It is a one-way valve that allows
for the smooth passage of air through and out of the engine
breathing system. Installation of the S&S Reed valve is
optional. It is not required for crankcase assembly.
However, its use is highly recommended. It installs easily,
and requires no extra machining. A separate Instruction
sheet is packaged with the Reed Valve. See Picture 2
11. Oil Pump, Lifters, Lifter Covers, and Cam Cover
Installation
These and any other crankcase components not
listed install per 1999-2003 Twin Cam OEM
service manual.
F. Replacement Crankcase Parts
Use the line drawings to identify replacement parts.
Parts designed to fit as direct stock replacements are
listed with corresponding H-D part number. If no H-D
part number is shown, S&S part cannot be used in
stock application and vice versa.
NOTES
● Right and left crankcase halves are not available
separately.
● Parts marked N/A are not available. Parts marked N/S
are available but not shown on line drawing.
Picture 2
S&S Reed Valve assembly and wave washer