S&S Cycle Billet Rocker Covers for Harley-Davidson Twin Cam 88 - Manual (Page 2)

Kit Contents:
Base, rocker cover, S&S ®
Chrome billet (2 each) . . . . . . . . . . . . . . . . . . . . . . . .#90-4068
Polished billet (2 each) . . . . . . . . . . . . . . . . . . . . . . .#90-4074
Plain Billet (2 each) . . . . . . . . . . . . . . . . . . . . . . . . . .#90-4066
Cover, top rocker, S&S
Chrome billet (2 each) . . . . . . . . . . . . . . . . . . . . . . . .#90-4069
Polished billet (2 each) . . . . . . . . . . . . . . . . . . . . . . .#90-4076
Plain billet (2 each) . . . . . . . . . . . . . . . . . . . . . . . . . .#90-4067
Capscrew, socket head, 1 ⁄
4
-20 x 3 ⁄
4
”
(12 each, H-D ® #4069A) . . . . . . . . . . . . . . . . . . . . . . .#50-0067
Capscrew, socket head w/flat washer
5 ⁄
16
-18 x 3 ⁄
4
” (12 each) . . . . . . . . . . . . . . . . . . . . . . . . .#50-0099
Washer, flat 1 ⁄
4
” x 7 ⁄
16
” x 1 ⁄
16
” (12 each)
H-D ® #6099 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .#50-7017
Gasket set, rocker cover billet (1 each) . . . . . . . . . . . . . .#90-4073
Loctite ® 243, 0.5ml. tube (1 each) . . . . . . . . . . . . . . . . . .#51-9003
NOTE: All reference to Harley-Davidson ® 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 Harley-Davidson part
number shown.
Introduction
S&S rocker covers for Harley-Davidson Twin Cam 88 ® engines
utilize original Harley-Davidson rocker arm support plates and
breather assemblies. Otherwise this kit includes all hardware and
gaskets required for installation.
S&S rocker covers can be installed with engine in frame. S&S
Rocker Cover Wrench Set #53-0040 is helpful in areas where
motorcycle frame prevents use of conventional tools. S&S
strongly recommends use of torque wrench and Loctite
® 243 (S&S
#51-9003, included in kit) on all fasteners.
S&S also recommends the installer become familiar with Twin
Cam 88
® “Top End Overhaul Procedure” section in Harley-
Davidson ® Service Manual before beginning installation. Refer
to Harley-Davidson ® Service Manual for additional information
as needed. S&S rocker covers are designed to accept valve springs
up to 1.660” O.D. with no modification. In most instances, they
will accept valve lifts to .710” without modification.
NOTES
●
Threads should be cleaned with Loctite ® primer or equivalent
prior to applying Loctite ® .
● It remains engine builder’s responsibility to check operating
clearances. Clearances should be checked between valve
spring/collar and rocker housing base as well as between
rocker arm and top rocker cover. S&S recommends
minimum of .060” between rocker arm and top collar. A
distance of .025” is sufficient between valve spring/top
collar and rocker housing base. Cylinder head must also be
set up for correct lift.
● Failure to establish correct operating clearances can result in
extensive engine damage not covered under warranty.
● It is installer’s responsibility to use Loctite ® and tighten fasteners
to correct torque values. Failure to install fastener correctly may
result in fastener vibrating loose and causing extensive engine
damage not covered under warranty.
Sparks from motorcycle electrical system can ignite gasoline fumes.
To prevent sparks as well as prevent electric starter from becoming
engaged inadvertently and causing personal injury, disconnect
battery and remove from motorcycle before proceeding.
1. Wash motorcycle, taking care to remove dirt from engine
and surrounding area of motorcycle. Remove gas tank and
clean engine and surrounding area with compressed air.
Dirt and other contaminants can cause extensive damage if
allowed to fall into engine.
High pressure air is potentially hazardous. Wear eye protection
during use and direct air stream away from face and others nearby.
2. Remove stock top rocker covers. Remove pushrod cover
retainers from front cylinder pushrods and collapse
pushrod covers.
3. Remove spark plugs, place motorcycle in gear, and rotate
engine to place intake and exhaust pushrods for front
cylinder at lowest point on cam. Confirm that both pushrods
can be rotated with light finger pressure. See Picture 1.
2
Picture 1 Picture 2 Picture 3
CAUTION
WARNING
CAUTION
WARNING