Skyjack SJIII 3226 Service Manual page 26

ection 1 - cheduled Maintenance
Conventional
(Back View)
Lower/
Neutral/Raise
Switch
Emergency Stop
Button
Test Emergency Lowering
1. Raise the platform.
2. Locate holding valve manual override
knob at the base of each lift cylinder.
Depress and turn counterclockwise. If
necessary, use access rod that is located
on the base of the aerial platform.
3. On hydraulic/electric tray, pull out and
hold emergency lowering valve to fully
lower the platform.
Result: he platform should lower.
4. o restore normal operation, depress and
turn holding valve manual override knobs
clockwise.
JIII eries
Free-wheeling
Valve
Lower/
Neutral/Raise
Switch
Platform/Off/Base
Key Switch
Test Free-wheeling
1. Ensure path of intended motion is clear.
2. Release the brake manually.
3. u r n f r e e - w h e e l i n g v a l v e k n o b
counterclockwise to a fully opened
position and attempt to push/pull the aerial
platform.
Result: Platform should move.
4. urn free-wheeling valve knob clockwise
to a fully closed position for normal
operation.
5. Reengage the brake.
Function Tests
Compact
(Back View)
Emergency Stop
Button
KYJACK, Page 27