Lift Actuator Assembly - Life Fitness 4000 Service Manual

How To ... REMOVE AND REPLACE THE LIFT ACTUATOR ASSEMBLY
Tools Required: Phillips screwdriver, standard screwdriver, hex key wrench set
WARNING: FAILURE TO OBSERVE SAFE PROCEDURES WHEN SERVICING THIS UNIT COULD
RESULT IN INJURY FROM ELECTRICAL SHOCK
Step 1
Turn the power OFF at the ON/OFF switch and then unplug the unit from the electrical outlet.
Step 2
Remove the VENT COVER. (See "How To...").
Step 3
Remove the MOTOR COVER. (See "How To...").
Step 4
Ground yourself to the machine by positioning an ANTI-STATIC GROUNDING STRAP around your wrist and
attaching the other end (alligator clip) to a MOUNTING SCREW, or a connecting GROUND WIRE SCREW.
LIFT ACTUATOR
LIFT MOTOR NUT
HAIR PIN CLIP
PUSH BOLT
LIFT FRAME ASSEMBLY
HAIR PIN CLIP
CLEVIS PIN
Step 5
Unplug the LIFT ACTUATOR (P4), from the HEATSINK CONTROLLER BOARD ASSEMBLY.
Step 6
Disconnect the large LIFT MOTOR NUT from the pins holding it to the LIFT FRAME ASSEMBLY by removing the
two HAIR PIN CLIPS and PUSH BOLTS.
Step 7
Remove the HAIR PIN CLIP and CLEVIS PIN securing the unthreaded end of the LIFT ACTUATOR to the
FRAME.
Step 8
Carefully lift the malfunctioning LIFT ACTUATOR and remove it from the machine.
Step 9
Check the new LIFT ACTUATOR distance from the top of the threaded post to the center of the hole in the LIFT
MOTOR NUT. The distance should be preset at 6.25 inches (15.875 cm). Position the new LIFT ACTUATOR
ASSEMBLY in place and reverse Steps 1 through 7 to return all parts to their proper locations.
NOTE: BE CAREFUL TO ROUTE WIRES OF THE LIFT ACTUATOR IN A MANNER
WHICH WILL AVOID PINCHING OR DAMAGE TO WIRES BY MOVING PARTS. USE
WIRE TIES TO INSURE WIRES STAY SECURE.
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