Operator's Manual

25
Taper Lock Assembly
After first 10 hours of operation torque set screws securing
taper lock bushings to driven pulleys to 37 ft. lbs.
(50 N⋅m) (2 each pulley) (Fig. 29).
1
2
4
3
Figure 29
1. Capscrew (M16 Thd, M14
Allen Wrench)
2. Retainer
3. Taper lock bushing
4. Bushing set screws (Non
standard thread)
If the crankarm assembly ever requires disassembly, use
the following assembly sequence to properly secure taper
lock bushing assembly:
1. Clean taper lock bushing and pulley taper of all dust,
rust and lubricants. Tapered joint should be completely
dry.
2. Position key within taper lock and flywheel shaft.
3. Draw taper lock into position by tightening M16
socket head capscrew to 7–15 ft–lb (10–20 N⋅m).
4. Install setscrews in taper lock bushing and secure.
Torque setscrews in an alternating method to 37 ft–lbs
(50 N⋅m).
5. Complete assembly by tightening M16 socket head
capscrew to 151–170 ft–lb (205–230 N⋅m). This torque
will overcome the clamp load applied to the shaft by
the taper lock bushing and insure proper clamp load on
crankarm bearings.
Torque Jackshaft Set Screws
After first 10 hours of operation and every 50 hours
thereafter, torque set screws securing drive shafts to gear
box shafts to 20–25 ft. lbs. (26–32 N⋅m) (4 each side)
(Fig. 30).
1
1
Figure 30
1. Drive shaft set screws
Adjusting Belt Tension
Make sure belts are properly tensioned to ensure correct
operation of unit and unnecessary wear.
1. Proper belt tension is attained by compressing idler
spring to a length of 3 inches (76 mm).
2. To adjust belt tension, proceed as follows:
A. Loosen jam nut securing idler tube to tensioner arm
(Fig. 31).
B. Rotate hex on top of idler tube until the bottom of
the rubber boot is between the two grooves in the
guide tube. At this position the spring will be
compressed to a length of 3 inches (76 mm).
C. Tighten jam nut.