S&S Cycle Chain Drive Camshaft Set for Harley-Davidson Twin Cam 88 Engines - Manual (Page 7)

12. Installing outer sprockets and drive chain.
a. While holding rear cam sprocket vertically in one
hand, place drive chain over sprocket with timing
mark pointing down. Then, with the other hand
place the crank sprocket in the chain loop with the
timing mark pointing up. See Picture 12.
b. Maintaining the position of the sprockets in the
chain, rotate the rear drive sprocket until it slides on
the splines of the rear cam. (The sprocket will only
go onto the splines in one position.)
c. Continue to maintain the position of the sprockets
on the chain. Rotate the rear cam and sprocket until
the flat on the crank sprocket aligns with the flat on
the crankshaft. Slide drive sprocket onto crankshaft.
d. Rotate engine by turning rear wheel to align the
timing marks as close as possible. (See Section B
Securing Motorcycle.)
e. Lay a straight edge across the centers of the crank
and cam sprockets and verify the timing marks are
in alignment.
NOTE - If timing marks are not in alignment, the sprocket and
chain installation must be removed and reinstalled. Misaligned
sprockets will cause the engine to run erratically.
13. Replace cam chain guide. See Picture 6 on page 4.
14. Apply red Loctite ® to threads of rear cam sprocket
bolt and crankshaft sprocket bolt and a drop of clean
20W-50 engine oil beneath bolt heads. Place original
large washer onto crank sprocket bolt. Use sprocket
tool H-D
® #42314 to secure sprockets and tighten
bolts to 25 ft-lbs.
15. Using H-D #42313 (Cam Chain Tensioner Unloader)
relieve spring pressure on retaining pin and remove pin.
16. Install outer cover with new gasket and tighten bolts to
90-120 in-lbs. in sequence illustrated in Figure 4.
17. Release lifters and slide them down the tappet block
bore to contact cams.
E. Pushrod adjustment
●
For cam set installation using stock style one-piece pushrods
see Step 1.
● For cam set installation using adjustable pushrods see Step 2.
1. For installations using stock style one-piece pushrods:
a. Refer to the appropriate Harley-Davidson ® service
manual.
2. For installations using adjustable pushrods:
a. If using S&S brand adjustable pushrods, refer to
S&S instruction sheet 51-1035 Installation and
Adjustment Procedures for all S&S Pushrod Kits
and Travel Limiters.
b. If using adjustable pushrods from another source,
follow the manufacturer’s instructions.
3. Replace and adjust all other components removed for
cam set installation per appropriate Harley-Davidson
®
service manual.
4. Check engine oil level. Start engine and check for leaks.
SAFE RIDING!
7
Picture 12
Figure 3
4
10
8
2
6 7
1
9
5
3