CYBEX Arc Trainer 630A, Service Manual

Page: 35 / 70

12. Attach the crank shaft assembly.
NOTE: The new bearings have been pre-assembled
on the new crank shaft assembly and are not
adjustable.
A. Place the assembly into the primary belt and
slide the pins into the holes on the frame. See
Figure 11.
NOTE: You may need to tap the pins
in so they are flush with the top of the pillow
blocks.
B. Using a 9/16” socket wrench and a 9/16” open
end wrench, secure the two bolts, four flat
washers and two nuts (removed in step 11B) to
each pillow block. See Figure 11.
C. Using a Phillips head screwdriver, attach the
top two screws and tighten the two bottom
screws securing the lower board assembly in
place.
D. Connect the elevation motor cable into the
lower board. See Figure 9.
E. Place the shield into position and secure using
the four new finned fasteners supplied with this
kit (the shield will snap in). See Figure 8.
16. Check the tension of the primary drive belt.
A. Check to see if idler pulley is present. See
Figure 13. NOTE: If idler pulley is present then
perform steps 16B - 18B. If idler pulley is not
present then skip steps 16B - 18B.
B. Press on the primary belt with your hand.
You should not feel any “give” in the primary
belt. If the belt “gives”, follow step 18 through
19. Otherwise, skip to step 20.
NOTE: The
secondary belt is self-tensioning.
17. Release the tension of the primary drive belt
(if applicable).
A. Using a 1/2” socket wrench, loosen the bottom
screw on the idler pulley. See Figure 13.
B. Using a 1/2” socket wrench, loosen the top
screw on the idler pulley. See Figure 13.
18. Torque the primary belt (if applicable).
A. Using a 3/8” square-hole torque wrench, pull
up until the idler wheel rocks against the brake
and is torqued to 75 ft-lbs.
NOTE: Continue
holding the torque wrench at 75 ft-lbs during
the next step.
B. While holding the torque wrench at 75 ft-lbs,
use a 1/2” socket wrench to tighten the top
screw on the idler pulley. See Figure 13.
Figure 12
Standoff (4)
Figure 11
Flat
Washer (8)
Alignment Pin (2)
Bolt (4)
Nut (4)
Pulley
and Crank
Shaft
Assembly
Crank
Arm
(2)
Primary
Belt
13. Secure the lower shaft assembly.
A. Confirm that both drive belts are straight and
centered in place.
B. Confirm that the two spacers are still in place
under the lower pulley shaft.
C. Using a 7/16” socket wrench, tighten the two
screws, two lock washers and two flat washers
securing the lower pivot assembly in place.
14. Secure the crank arms.
A. Slide each crank arm in place. See Figure 11.
NOTE: The face of each crank arm should be
flush with the end of each shaft.
B. Using a 9/16” socket wrench, tighten the screw
on each crank arm.
15. Attach the lower board assembly.
A. Attach the four standoffs as shown in Figure 12.
B. Slide the lower board assembly over the two
bottom screws and to the right.