S&S Cycle Transmission Case, 4-to-5 Speed - Manual (Page 3)

G S&S
® trap door is 1987-up style. S&S recommends using this
style trap door and end cover with ball and ramp clutch
actuator. Strength of earlier, lever-type actuator is marginal
for heavy clutch springs sometimes required in high-
performance applications.
G Most 4-speed big twins utilize transmission-driven
mechanical speedometers. 5-speed transmission requires
electronic sensor and speedometer or wheel-driven
speedometer drive and speedometer. Wheel hub may
require modification to accept speedometer drive unit.
G Clutch-actuator end of 4-speed clutch cable is not
compatible with five-speed type clutch actuator. Options
are to replace clutch lever with 1987-up style lever or
purchase custom cable with correct ends from Barnett Tool
and Engineering in Ventura, CA. (805-642-9435)
G Following parts are required to use 1965-later style dry clutch:
Clutch pushrod end, right (Harley-Davidson ® #37089-79)
Clutch pushrod center (H-D ® #37088-79)
Clutch pushrod end, left (H-D #37090-79)
Throw-out bearing (H-D #37312-75)
Thrust washer, 2 ea. (H-D #37313-80)
Retaining ring (H-D #11096)
G Following parts are required to complete ball and ramp type
clutch actuator required with S&S transmission access door:
Ball, 3 ea. (H-D #8873)
Retaining ring (H-D #10998)
Inner ramp (H-D #25452-87A) or inner ramp (HD #25604-00)
Outer ramp (H-D #25453-87) or outer ramp (HD #25605-00)
NOTE: Outer ramp #25453-87 must be used with inner ramp
#25452-87A. Outer ramp #25605-00 must be used with inner
ramp #25604-00. Ramps #25605-00 and #25604-00 provide more
disengagement between clutch plates.
Coupling (H-D #34920-86)
Right side cover gasket (H-D #38601-87B)
Filler plug-dipstick (H-D #37075-87)
O-ring, filler plug (H-D #11132)
Clutch release cover, chrome (H-D #37105-87A)
G Failure to disconnect battery and remove from motorcycle
may result in accidental engagement of electric starter with
potential bodily injury.
G Proper assembly of transmission with correct parts in good
condition is critical for safe operation of motorcycle.
Transmission malfunction can cause rear wheel to lock with
loss of control of motorcycle. In some instances,
disengagement of clutch will not free wheel.
G Never reuse transmission retaining rings. Damaged retaining
ring can permit engagement of two gears at once. This can
result in seized transmission and loss of control of motorcycle
with severe personal injury to operator and others.
*All reference to H-D ® part numbers is for identification purposes
only. We in no way are implying that any of S&S Cycle’s products
are original equipment parts or that they are equivalent to the
corresponding H-D
® part number shown.
INSTALLATION
A. Case Assembly
1.
Clean threads of four flathead screws 50-0300 and apply
Loctite #609 (included) to same. Attach Transmission
Mounting Stud Adapter 56-1069 to case with screws.
See Picture 1. Tighten to 15-18 ft-lbs.
2. Place transmission access door against case and confirm
that mounting stud adapter does not interfere with
access door. Stock access door will likely require removal
of material along lower edge to clear adapter. See
Picture 2.
3. Install o-ring 50-8008 on Magnetic Drain Plug 50-8333
and install drain plug in case.
4. Tighten plug to 7 ft-lbs.
Failure to install plug correctly may allow leaking
transmission fluid to contact tire or brakes resulting in loss of
control of motorcycle and serious injury.
3
WARNING
Picture 1
Picture 2
WARNING
If necessary, remove material in shaded area to
provide clearance for mounting stud adapter.