Genie GR-12 Service Manual page 68

Service Manual
Ground Controls
16 Raise the machine approximately 2 inches / 5
cm. Place blocks under both wheels.
GR-12, GR-15, QS-12R, QS-15R, QS-12W,
QS-15W: Place a 0.79 x 6 x 6 inch / 2 x 15 x
15 cm thick steel block under both wheels at
the hydraulic side of the machine.
GR-20, QS-20R, QS-20W: Place a 0.85 x 6 x
6 inch / 2.16 x 15 x 15 cm thick steel block
under both wheels at the hydraulic tank side of
the machine.
17 Lower the machine onto the blocks.
18 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.
19 Lower the platform to the stowed position.
20 Raise the machine approximately 2 inches / 5
cm. Remove the blocks from under both
wheels..
21 Lower the machine and remove the jack.
22 Center a lifting jack under the drive chassis at
the steer end of the machine.
23 Raise the machine approximately 2 inches / 5
cm.
24 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.
25 Lower the machine onto the blocks.
54
26 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 is faulty and must be
replaced. Repeat this procedure beginning
with step 1.
27 Raise the machine approximately 2 inches / 5
cm. Remove the blocks from under both
wheels..
28 Lower the machine and remove the jack.
29 Center a lifting jack under the drive chassis at
the non-steer end of the machine.
30 Raise the machine approximately 2 inches / 5
cm.
31 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.
32 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. The level
sensor is faulty and must be replaced. Repeat
this procedure beginning with step 1.
33 Lower the platform to the stowed position.
34 Raise the machine approximately 2 inches / 5
cm. Remove the blocks from under both
wheels..
35 Lower the machine and remove the jack.
GR ™ • QS ™ R • QS ™ W
May 2018
Part No. 1275811GT