Life Fitness exercise bikes - Manual

1
Lifecycle Exercise Bikes
How To...REMOVE THE EXISTING CRANK BEARING/NUT ASSEMBLIES
Tools Required: Special crank arm wrench required (available from Life Fitness), torque wrench (30 FT. LB. with
32mm open end), punch, standard screwdriver, hex key wrench set, clean rag
Warning: If the information in these instructions are not followed exactly, the exercise bike may be
seriously damaged and may void your warranty. To insure proper installation, service by a Life Fitness
authorized service representative is strongly recommended.
Step 1
Remove the exercise bike PEDALS and HOUSING.
Step 2
Remove the CHAIN or DRIVE BELT, depending on model.
Step 3
With a standard screwdriver, remove the three
SPROCKET DUST COVER SCREWS (if so equipped).
Guide the SPROCKET DUST COVER off of the CRANK
ARM.
Step 4 (Figure 1)
Using a 5/32” hex key wrench, remove the two BEARING
CLAMP BOLTS, two LOCKWASHERS and four BEARING
CLAMPS from the bike frame. Discard the two BEARING
CLAMP BOLTS, two SPLIT LOCKWASHERS and the
four BEARING CLAMPS as they are not to be re-used.
Step 5 (Figure 2)
Bend the outward tab of the TAB LOCK WASHER to allow rotation of
the REVERSE THREADED LOCK NUT. Using the 32mm crank arm
wrench, loosen and remove the REVERSE THREADED LOCK NUT.
Remember, this NUT is REVERSE THREADED.
NOTE: NUTS ON THE LEFT SIDE ARE REVERSE THREADED, i.e.,
CLOCKWISE TO LOOSEN AND COUNTER-CLOCKWISE TO
TIGHTEN.
Step 6 (Figure 3)
Remove the TAB LOCK WASHER off the inside CRANK NUT on the
left side of the bike. Discard the TAB LOCK WASHER as it is not to
be re-used.
Step 7
With the 32mm crank arm
wrench, loosen and remove
the left side REVERSE
THREADED CRANK
BEARING/NUT ASSEMBLY
by sliding it over the CRANK
ARM.
Step 8 (Figure 4)
Remove the CRANK ARM
from the CRANK TUBE by
tilting it from its vertical
position to a horizontal position. Guide the CRANK ARM through the
CRANK TUBE until it has been completely removed from the left side of
the the bike to the right side.
Step 9
With the special 32mm crank arm wrench, loosen and remove the right
CRANK BEARING/NUT ASSEMBLY from the CRANK ARM.