LifeFitness Lifecycle 9500HR Service Manual page 44

Lifecycle 9500HR Series Exercise Bikes
How To...REMOVE AND REPLACE THE CRANK ARM AND BEARINGS (Cont)
STEP 10
Slide the right CRANK BEARING NUT ASSEMBLY over the CRANK ARM. Using the 32mm crank arm wrench,
install the BEARING CRANK NUT ASSEMBLY until it seats against the SPROCKET. Tighten to 20-30 FT. LBS.
seating torque.
STEP 11
Using a clean rag, wipe all accumulated dirt and residue from the CRANK TUBE.
STEP 12
Guide the CRANK ARM through the CRANK TUBE by tilting it from a horizontal position to a vertical position until it
has been completely inserted from the right side of the bike to the left side.
STEP 13
Slide the left side REVERSE THREADED CRANK BEARING/NUT ASSEMBLY over the CRANK ARM and align into
position. Begin to thread the CRANK BEARING/NUT ASSEMBLY and follow this three step procedure using a
torque wrench:
•
Tighten to 9-12 FT. LBS. seating torque
•
Back of the BEARING CRANK NUT to loosened state
•
Retorque to 4 FT. LBS. ± 10%
STEP 14
Slide the new TAB LOCK WASHER over the CRANK ARM with the
bent tab facing toward the bike FRAME. Slide the key of the TAB
LOCK WASHER through the notch and into position against the
CRANK BEARING/NUT ASSEMBLY. Align the flat of the bent TAB
against the flat of the NUT.
STEP 15
Slide the REVERSE THREADED LOCK NUT over the CRANK ARM,
thread it into position and with the 32mm crank arm wrench, tighten the
REVERSE THREADED LOCK NUT to 4 FT. LBS. ±10% against the TAB LOCK WASHER. Remember, this NUT is
REVERSE THREADED. Bend the straight tab of the TAB LOCK WASHER so the flat of the TAB is against the flat
of the LOCK NUT, then bend the inner tab of the TAB LOCK WASHER until it is flush against the flat of the inner
CRANK BEARING NUT.
Torque
50-60 In Lbs
6
STEP 16
Using a 5/32 inch hex key wrench, loosely install the two new
SPLIT LOCKWASHERS, two new BEARING CLAMP BOLTS and
the four new BEARING CLAMPS against the bike frame to secure
the outer races of the CRANK BEARING/NUT ASSEMBLIES in
place. Tighten the two new BEARING CLAMP BOLTS to 50-60 In.
Lbs. seating torque.
NOTE: THE BEARING CLAMP BOLTS ARE TREATED WITH A
SPECIAL EPOXY AND CAN BE USED ONLY ONCE.
STEP 17
Re-install the DRIVE BELT, the SHROUD and replace the
PEDALS from the exercise bike.