Chapter Four – Maintenance Procedures – Base
80
4.6 LIFT UNIT (CONTINUED
LIFT MOTOR ISOLATION PLATE REPLACEMENT (CONTINUED)
6. Remove the motor coupler (D) and bushings (E) through the access holes.
7. Using a 3/16” punch and hammer, remove the top roll pin on the manual drive hex shaft coupling and set
the shaft and coupler assembly aside.
8. Using a 3/8” open end wrench, remove the four stand–offs (F) from the lift housing and lower the isolation
plate (B) with the attached stand–offs.
9. Using a 3/8” socket, remove the two nuts and washers (A) and the two stand–offs from one end of the
isolation plate and set the nuts, washers and stand–offs aside.
10. Rotate the end of the isolation plate with the stand–offs removed toward the access opening and tilt it up
and out of the opening.
11. Remove the two remaining stand–offs from the isolation plate. Attach the two stand–offs to one end of the
new isolation plate.
12. Reverse the above steps to reattach all components to the bed.
CAUTION
When re–installing the stand–offs to the lift housing, do not use a wrench to start the threads of the stand–offs
and take care to install them straight or damage to the stand–offs could occur.
NOTE
When reinstalling the lift motor, use the access holes in the lift housing to view the alignment of the motor
drive shaft to the motor coupler. The drive shaft on the motor probably will have to be turned to be aligned
with the coupler. Use a 7/16” open end wrench to turn the drive shaft of the motor.
The four rubber bushings (C) will be included in the replacement kit with the new isolation plate. The motor
coupler (D) and bushings (E) will be removed with the isolation plate and can be re–used with the new plate,
unless damaged. If only the motor coupler and bushings need to be replaced, see page 87.
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