S&S Cycle Chain Drive Camshaft Set for Harley-Davidson Twin Cam 88 Engines - Manual (Page 4)

6. Use tool H-D ® #42313 (Cam Chain Tensioner Unloader)
to swing primary cam chain tensioner away from chain.
Secure with retention pin. See Picture 5.
Do not pull the retention pins from the primary or secondary
cam chain tensioners when the chain and sprockets are
removed! The primary and secondary cam tensioner springs
exert 35-40 pounds of pressure when retained. Removing a
retaining pin without supporting the shoe will cause the
spring to snap open through its full travel, damaging it,
and/or the tensioner shoe. The tensioner can also injure
hands and fingers in its path.
NOTE - If cam chain tensioner retaining pins interfere with
cleaning or service procedures when the cam support plate is
removed, use cam chain tensioner unloader tool (H-D #42313) to
hold against spring pressure, then remove retaining pin and ease
spring assembly into the unloaded position.
7. Working gradually around edge of sprocket, carefully
pry sprockets off cams until loose on shaft. Remove
sprocket/chain assembly and mark chain with magic
marker to indicate direction of travel. Chain should be
reinstalled in same direction.
8. Remove chain guide. See Picture 6.
9. Gradually loosen and remove four oil pump bolts
according to sequence shown in Figure 1.
10. Gradually loosen and remove six support plate bolts
according to sequence shown in Figure 2.
NOTE - Failure to remove or install bolts according to correct
procedure may result in parts damage not covered under
warranty.
11. Carefully remove cam support plate assembly from
crankcase. Use tool H-D #42313 to swing secondary cam
tensioner away from chain. Secure tensioner with
second retention pin inserted through front of support
plate. Do not remove pin until support plate assembly
has been reinstalled in engine.
NOTE - It is not necessary to remove oil pump from engine to
complete installation. However, installer must insure that oil
pump O-rings are in good condition and remain in place during
procedure. It is installer’s responsibility to replace O-rings if
necessary.
12. Remove screws that secure bearing retainer to support
plate and remove retainer from plate.
4
Picture 6
Figure 1
4 2
3
1
Figure 2
1
5
3 6
2
4
Picture 5
CAUTION