Drive Motor Belt - Life Fitness 4000 Service Manual

How To ... REMOVE AND REPLACE THE DRIVE MOTOR BELT
( Continued )
Step 5
Lift the FRONT ROLLER ASSEMBLY from the EXTRUSION BRACKETS and position the FRONT ROLLER within
the STRIDING BELT to allow for removal of the DRIVE MOTOR BELT from the DRIVE MOTOR and FRONT
ROLLER PULLEYS.
Step 6
Position a new DRIVE MOTOR BELT over the DRIVE MOTOR and FRONT ROLLER PULLEYS taking note to
properly align the ribs within the grooves of the PULLEYS. Relocate the FRONT ROLLER back into operating
position.
Step 7
Use a hex key wrench to tighten the TENSIONING SCREWS and WASHERS at the REAR ROLLER by
ALTERNATELY turning the SCREWS clockwise an EQUAL number of times each until the STRIDING BELT is
snug, but not overstretched, against the REAR ROLLER.
Step 8
Check the tension of the DRIVE BELT using a BELT TENSIONING GUAGE. (Belt tension=100 lb+/-5 lb). The
DRIVE BELT tension can be adjusted by loosening or tightening the LOCK NUT of the TENSIONING BOLT
located next to the LIFT ACTUATOR.
Step 9
Reverse Steps 1 through 4 to return all parts to their proper positions and refer to "How To...ADJUST AND
TENSION THE STRIDING BELT" for proper BELT tensioning instructions.
CHECKING THE DRIVE BELT PULLEY ALIGNMENT:
It is a good practice to check the alignment of the DRIVE MOTOR BELT PULLEY and the FRONT ROLLER
PULLEY whenever servicing or replacing the DRIVE MOTOR BELT. With the power switch OFF and the machine
unplugged from the electrical outlet, lay a straightedge flat against the outside of the FRONT ROLLER PULLEY
and the DRIVE MOTOR PULLEY. The flat faces of the two PULLEYS should be in-line (coplanar). If the PULLEYS
are not in-line, loosen the two DRIVE MOTOR PULLEY SET SCREWS and adjust the DRIVE MOTOR PULLEY on
the MOTOR SHAFT accordingly. Tighten the SET SCREWS to secure the PULLEY into position.
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