Landice L Series Diagnostic And Service Manual page 72

DRIVE MOTOR
1. Elevate treadmill to 15%. Unplug power cord.
2. Remove motor cover screws (4)
3. Disconnect white, green, and black wires from MCB.
4. If applicable remove green ground wire from frame.
5. Remove drive belt tension adjustment bolt by removing nut. Nut is located on bottom of motor
pan. Note: See section on Tracking and Tensioning
6. Remove drive belt from motor.
7. Locate Drive Motor hitch pins on bottom of motor pan. Remove hitch pins using needle nose
pliers. Note: When reinstalling hitch pins make sure to crimp ends to insure positive locking.
8. Remove Motor Spacers: The rubber and metal spacers mounted between the motor mount and
the motor pan are arranged in a specific manner. The reason for this is to reduce vibration. If
your standing on the treadmill, the following arrangement applies: On the right side you will
have (0) spacers on top of pan and (1) rubber, (1) metal followed by (1) retaining clip on bottom.
On the left side you will have (1) metal spacer on top of the pan and (1) rubber on the bottom
followed by (1) retaining clip.
9. Remove Drive motor. Be sure not to lose metal spacer from under right side.
10. When re installing make sure to properly position foam block under motor.
11. Reverse to install
DRIVE MOTOR BRUSHES
1. Unplug Treadmill.
2. Remove Motor Brush caps (2) with large flat head screwdriver.
3. Remove Motor Brushes and inspect. They should be replaced if 1/4 inch or less. Inspect motor
Commutator for wear (Black-scoring present on copper segments) Try to dress out (clean up)
Commutator with a Commutator stone or emery cloth.
4. When you reinstall motor brushes make sure the brush does not bind up in its holder. The
motor brush must move freely the full length with zero resistance. If resistance is present you must
carefully dress out the brush until the correct tolerance is achieved.
Motor brushes should be checked every 6 months on institutional treadmills and after 5
years on home units.
ELEVATION MOTOR
1. Remove Elevation Motor.
A. Remove all weight from the elevation assembly by placing a suitably strong object under the
under motor pan (many technicians use their toolbox) so that the wheels are in the air.
B. Disconnect Elevation Motor wires. (Step 2F)
C. Disconnect the Elevation Motor nut from the elevation assembly. To do this, loosen the two
(2) ¼-20 screws and slide the two (2) ¼" dia. pins out. (Step 1C)
D. Remove the 3/8" dia. Elevation Motor mounting pin from the Clevis mount. (Step 1D)
E. Remove Elevation Motor.
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