Life Fitness 4500HR Service Manual page 24

Life Fitness Model 4500HR Treadmill
How To... REMOVE AND REPLACE THE FRONT ROLLER ASSEMBLY
Tools Required: Phillips screwdriver, socket set, hex key wrench set
Step 1
Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet.
Step 2
Remove the MOTOR COVER. (See "How To...").
Step 3
It will now be necessary to relieve the tension on the STRIDING BELT by accessing the TENSIONING BOLTS
from the rear ENDCAPS.
IMPORTANT: EACH ADJUSTMENT MADE TO ONE SIDE OF THE REAR ROLLER MUST BE MET
WITH AN EQUAL ADJUSTMENT TO THE OTHER SIDE OF THE ROLLER TO
MAINTAIN AN IDEAL BELT TENSION AT THE PIVOT POINT.
HELPFUL HINT: MARK THE POSITION OF THE REAR ROLLER ON THE INSIDE OF THE
MOUNTING BRACKET TO LOCATE ITS ORIGINAL PLACEMENT.
THIS WILL HELP WHEN RE-TENSIONING THE STRIDING BELT.
Use a hex key wrench to alternately turn the STRIDING BELT TENSIONING BOLTS 1/4 turn each, counter-
clockwise until the STRIDING BELT is slackened enough to allow for removal of the FRONT ROLLER in the next
Step.
Step 4
Slide the DRIVE MOTOR PULLEY BELT from the FRONT ROLLER ASSEMBLY PULLEY. Lift the worn FRONT
ROLLER ASSEMBLY from the EXTRUSION BRACKETS and from within the STRIDING BELT to remove it from
the unit.
Step 5
Locate the new FRONT ROLLER ASSEMBLY into position and reverse Steps 1 through 5 to return all parts to
their proper locations.
Step 6
Refer to "How To...ADJUST AND TENSION THE STRIDING BELT" for proper BELT tensioning instructions.
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