S&S Cycle Chain Drive Camshaft Set for Harley-Davidson Twin Cam 88 Engines - Manual (Page 3)

B. Securing Motorcycle
Motorcycle must be adequately secured against falling over
during the cam change operation! Use of tie down straps on
both sides of motorcycle is recommended.
1. Place motorcycle on a suitable repair stand so that
motorcycle is stable and secure with the rear tire
elevated. Place motorcycle in 4th or 5th gear. Remove
spark plugs. These steps are necessary so that the rear
tire can be used to rotate the engine to correctly align
the cam timing marks during installation, and align the
oil pump during reassembly.
2. Disconnect negative terminal of battery to eliminate
potential sparks and inadvertent engagement of starter
while working on motorcycle.
NOTE - S&S ® 510 cams are compatible with stock pushrods.
However, replacing stock pushrods with S&S adjustable pushrods
93-5096 will simplify cam set installation.
C. Disassembly
1. Removing pushrods
a. If stock pushrods are to be reused, remove motorcycle
gas tank and top rocker covers. Remove rocker
assemblies and pushrods according to procedure
described in the Harley-Davidson
® Twin Cam 88 ®
Service Manual.
b. To remove stock pushrods which will not be
reused, remove pushrod cover clips, collapse
pushrod covers, place motorcycle in gear, and
rotate rear tire (see Step B securing motorcycle) to
place lifters and pushrods for either cylinder at
lowest point on camshaft. Piston for same cylinder
will be at TDC on Compression stroke and
pushrods will spin with light finger pressure. Use
bolt cutters to cut pushrods.
Proceeding without pushrods in proper position can cause
bodily injury.
Cutting pushrods with saw may result in metal chips entering
engine and causing extensive engine damage not covered
under warranty.
2. Remove engine gear cover and gasket. It is not
necessary to remove ignition sensor from cover. Secure
lifters with tool made from large binder clip spring. See
Picture 3.
3. Rotate rear tire (see Step B securing motorcycle) to align
camshaft timing marks.
NOTE - S&S recommends using Harley-Davidson Sprocket Locking
Tool H-D
® #42314 to secure sprockets while bolts are removed or
installed. See Picture 4.
4. Remove bolt and washer from 17 tooth crankshaft
sprocket.
5. Remove bolt and washer from 34-tooth primary
camshaft sprocket. Remove the 34-tooth camshaft
sprocket and sprocket spacer.
3
Picture 3
Picture 4
CAUTION
WARNING
CAUTION