Test The Drive Speed - Raised Position - Genie GRC-12 Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST B PROCEDURES
B-10
Test the Drive Speed -
Raised Position
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Proper drive functions are essential to safe
machine operation. The drive function should
respond quickly and smoothly to operator control.
Drive performance should also be free of
hesitation, jerking and unusual noise over the
entire proportionally controlled speed range.
Note: Perform this procedure with the machine on
a firm, level surface that is free of obstructions.
1 Create start and finish lines by marking two
lines on the ground 40 feet / 12.2 m apart.
2 Turn the key switch to platform control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
3 Press and hold the high or low speed lift enable
button.
4 Press the platform up button.
5 Raise the platform approximately 4 feet / 1.2 m
from the ground.
6 Choose a point on the machine; i.e., contact
patch of a tire, as a visual reference for use
when crossing the start and finish lines.
7 Press and hold the drive/steer function enable
switch on the control handle.
3 - 18
a
b
c
d
e
8 Move the control handle in the direction
indicated by the blue arrow on the control panel
until the machine begins to move forward.
9 Bring the machine to top drive speed before
reaching the start line. Begin timing when the
selected reference point on the machine
crosses the start line.
10 Continue at full speed and note the time when
your reference point on the machine passes the
finish line. Refer to Section 2, Specifications .
GRC
September 2016
drive/steer function enable switch
platform up button
low speed lift enable button
high speed lift enable button
blue arrow
Part No. 227123
REV B