Service Manual
February 2022
Ground Controls
40
GRC
™
Part No. 1314708GT
21 Raise the platform to approximately 1 ft /
30 cm.
Result: The platform should stop, an alarm
should sound and fault code LL appears in
the diagnostic display.
Result: The platform does not stop or the level
sensor alarm does not sound. Adjust the level
sensor until the alarm just begins to sound
OR the down limit switch may need to be
adjusted.
22 Lower the platform to the stowed position.
23 Raise the machine slightly.
24 Remove the blocks from under both wheels.
25 Lower the machine and remove the jack.
26 Center a lifting jack under the drive chassis at
the steer end of the machine.
27 Raise the machine approximately 2 inches /
5 cm.
28 Place a 2.18 x 6 x 6 inch / 5.54 x 15 x 15 cm
thick steel block under both wheels at the
steer end of the machine.
29 Lower the machine onto the blocks.
30 Raise the platform to approximately 1 ft /
30 cm.
Result: The level sensor alarm should not
sound.
Result: The level sensor alarm does sound.
The level sensor must be replaced.
31 Raise the machine slightly.
32 Remove the blocks from under both wheels.
33 Lower the machine and remove the jack.
34 Center a lifting jack under the drive chassis at
the non-steer end of the machine.
35 Raise the machine approximately 2 inches /
5 cm.
36 Place a 2.4 x 6 x 6 inch / 6.1 x 15 x 15 cm
thick steel block under both wheels at the
non-steer end of the machine.
37 Raise the platform to approximately 1 ft /
30 cm.
Result: The platform should stop, an alarm
should sound and fault code LL appears in
the diagnostic display.
Result: The platform does not stop raising and
the tilt alarm does not sound. The level sensor
must be replaced.
38 Lower the platform to the stowed position.
39 Raise the machine slightly.
40 Remove the blocks from under both wheels.
41 Lower the machine and remove the jack.
Summary of Contents for Genie GRC-12
Page 113: ...February 2022 Service Manual 101 Electrical Schematic GRC Options...
Page 115: ...February 2022 Service Manual 103 Electrical Schematic GRC from GRC11 1000 to GRC11 1078...
Page 118: ...Service Manual February 2022 106 Electrical Schematic GRC from GRC11 1000 to GRC11 1078...
Page 119: ...February 2022 Service Manual 107 Electrical Schematic GRC from GRC11 1079 to GRC14 1780...
Page 122: ...Service Manual February 2022 110 Electrical Schematic GRC from GRC11 1079 to GRC14 1780...
Page 123: ...February 2022 Service Manual 111 Electrical Schematic GRC from GRC14 1781 to GRC15 2343...
Page 126: ...Service Manual February 2022 114 Electrical Schematic GRC from GRC15 2344 to GRC16P 2481...
Page 127: ...February 2022 Service Manual 115 Electrical Schematic GRC from GRC16P 2482 to GRC16P 2562...
Page 130: ...Service Manual February 2022 118 Electrical Schematic GRC from GRC16P 2563 to GRCP 5999...
Page 131: ...February 2022 Service Manual 119 Hydraulic Schematic GRC from GRC11 1000 to GRC12 1168...
Page 135: ......
