Yale MPB040-E, Manual

Page: 49 / 130

SWITCHES (ON/OFF AND
PROPORTIONAL)
Remove
NOTE: It is not always necessary to remove and dis-
assemble all the components that make up the control
section of the steering handle to replace a damaged
part. Do only the steps necessary to replace the dam-
aged parts. See Figure 16.
1. Move lift truck to a safe, level area and block the
drive wheel to prevent movement of the lift truck.
2. Turn the key switch to the OFF position and dis-
connect battery.
3. Discharge the capacitor. See Special Precau-
tions.
NOTE: The handle is comprised of two molded-plas-
tic halves and is held together by three capscrews.
4. Remove the three capscrews retaining upper half
of control handle to lower half.
5. Disengage hooks under the auto-reverse switch.
Slide upper half off the lower half using a gentle
rocking motion while lifting and pulling upper half
away from lower half. See Figure 16.
6. Unplug handle wiring harness from control handle
card.
7. Place upper half of handle upside down on a se-
cure, level work surface so the internal parts are
facing up.
8. Refer to the wiring diagram, or draw a sketch of
where the failed push button switch is plugged
into the control handle card. Unplug failed switch
from control handle card.
NOTE: Both ON/OFF and proportional switches use
three tabs to keep the switches attached to the upper
half of the control handle.
9. Remove the switch by pressing the three tabs to-
ward the switch and pushing the switch through
upper half of cover.
10. Replace ON/OFF Switch :
a. Separate the button from the switch by spread-
ing the four tabs to allow the switch to slide out
of the button.
b. To assemble, slide the ON/OFF switch into the
ON/OFF button. Verify that the switch assem-
bly locks into position.
Install
1. Install the switch assembly into the control han-
dle. Verify that the switch assembly locks into po-
sition in the control handle.
2. Connect the switch assembly wiring to the control
handle card.
3. Plug handle wiring harness into control handle
card.
CAUTION
DO NOT force the upper half onto the lower half
as this will cause damage to the retaining hooks
of the upper half.
4. Install upper half of handle onto the lower half:
a. Tip the upper half up and align the hooks under
the auto-reverse switch.
b. Lower the upper half onto the lower half.
5. Install three capscrews to retain upper half of con-
trol handle to lower half.
6. Connect battery cable and test control handle op-
eration.
NOTE: If adding optional proportional switches for
the first time, make sure to perform Control Handle
Card (Old Style).
2200 YRM 1007 Control Handle
25