DE-STA-CO 115RSD - Manual (Page 8)

SETTING THE CAM
Fig.9Settingthecam
CAUTION: This mechanism is designed to operate
with adjacent followers in close contact along their
entire width with the surface of the cam. Unless this
condition is achieved by proper installation, the
mechanism will not transmit its rated load. Serious
damage to the cam and output shaft will occur.
A. Apply Permatex Prussian Blue sealant to entire
cam (16) track.
IMPORTANT: The following procedure is very
important and can be difficult if not performed by a
trained and experienced service technician.
B. Rotate input shaft (15) slowly with a small hand
crank to ensure that:
1. Both followers are in contact with cam rib.
Look for the removal of all bluing in equal
amounts on both sides of cam. If bluing
removal is uneven, loosen screws (29a) on
both cartridges (11 and 12) and rotate tops of
cartridges (11, 12) until followers (25) are in
contact. Tighten screws (29a).
2. You should not encounter unusual resistance
in motion. The bluing pattern should be
removed evenly on either side of the cam rib
or tooth. If the patch of bluing is worn off the
outside of the cam rib on one side of the cam
(16) and not the other, remove cartridges (11,
12) and shift shims (14) from one cartridge to
the other so that the cam is shifted 0.002 to
0.005 inches in the direction of the worn
side. Do not overshift cam (16) or knocking
will occur.
3. There should be no looseness or backlash of
the output shaft or flange at any point of the
rotation. If there is, loosen screws (29a) on
both sides and rotate tops of cartridges
(11, 12) to slightly preload the loosest dwell.
Tighten screws (29a) on both sides.
4. Rotate the shaft (15) for one full turn of the
output shaft. You should feel a constant
torque or effort to turn the shaft. If there is not,
remove follower wheel (4) and adjust shims
(14) to move follower wheel in or out.
C. Match mark cartridges with housing to retain
proper adjustment.
D. Final assemble as follows:
1. Remove screws (1a).
2. Remove output bearing retainer (6) and shims
(2) from housing (1).
NOTE: Keep shims with output bearing retainer.
3. Remove follower wheel (4) from
housing (1).
4. Remove shims (5) from follower
wheel (4).
NOTE: Keep shims with follower wheel.
5. Remove first cartridge (11) and
shims (14).
6. Lightly grease and install o-ring (10) on
cartridge (11).
7. Install shims (14) on cartridge (11).
8. Apply EXP 222 grease on o-ring (10) and its
mating surface on housing (1).
9. Remove second cartridge (12) and
shims (14).
10. Install o-ring (10) on cartridge (12).
11. Install shims (14) on cartridge (12).
12. Apply EXP 222 grease on
o-ring (10) and its mating surface on
housing (1).
13. Install cartridge (11, 12), install screws
(29a), align match marks to obtain proper
cam setting, tighten screws.
14. Install roll pins (29b).
15. Hand pack bearing (3) with EXP 222 grease.
Wipe off excessive grease.
16. Install seal ring (9) in groove of follower
wheel (4).
17. Apply EXP 222 grease on seal ring (9) and
7