Test The Ground Control Override; Check The Directional Valve Linkeage - Genie S-40 Service Manual

October 2013
B-14

Test the Ground Control Override

Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
A properly functioning ground control override is
essential to safe machine operation. The ground
control override function is intended to allow
ground personnel to operate the machine from the
ground controls whether or not the red Emergency
Stop button on the platform controls is in the on or
off position. This function is particularly useful if the
operator at the platform controls cannot return the
boom to the stowed position.
1 Push in the platform red Emergency Stop
button to the off position.
2 Start the engine from the ground controls.
3 At the ground controls, operate each boom
function through a partial cycle.
Result: All boom functions should operate.
Part No. 102521
Section 3 • Scheduled Maintenance Procedures
B-15
Check the Directional Valve
Linkage
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Note: Perform this test only on models equipped
with a oscillating axle.
Proper axle oscillation is essential to safe machine
operation. If the directional valve linkage is not
operating correctly, the stability of the machine is
compromised and it may tip over.
1 Remove the drive chassis cover and the axle
covers from the non-steer end of the drive
chassis.
2 Locate the directional valve inside of the non-
steer axle and inspect the linkage for the
following:
Lock nut is tight against yoke
•
Yoke clevis pins are installed
•
Cotter pins are installed through clevis
•
pins
Linkage is properly attached to
•
directional valve
S-40 • S-45
CHECKLIST B PROCEDURES
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