Steer Cylinder; Oscillating Axle Option - Gs-90 Models - Genie GS-3384 Service And Repair Manual

Service and Repair Manual
Steer Axle Components

9-2 Steer Cylinder

9-2
Steer Cylinder
How to Remove the Steer
Cylinder
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications, Hydraulic Hose and Fitting Torque
Specifications.
1 Tag, disconnect and plug the hydraulic hoses
from the steer cylinder. Cap the fittings on the
cylinder.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
2 Remove the pin retaining fasteners from the
barrel-end pivot pin. Place a rod through the
pin and twist to remove the pin.
Note: Note the location and the amount of the
spacers at the barrel end of the steer cylinder.
3 Remove the pin retaining fasteners from the
rod-end pivot pin. Place a rod through the pin
and twist to remove the pin.
Note: Note the location and the amount of the
spacers at the barrel end of the steer cylinder.
4 Remove the steer cylinder from the machine.
96
9-3 Oscillating Axle Opti on - GS-90 M odels
9-3
Oscillating Axle Option - GS-90
Models
How the Oscillating Axle
Functions
When driving the GS-90 with the platform in the
stowed position, the oscillating axle function
ensures that all four wheels maintain solid contact
with the ground, delivering the maximum traction
available.
When driving the GS-90 with the platform raised
above the down limit switch height, the oscillating
axle function is limited in that the oscillating
cylinders only respond to input from the oscillating
axle limit switches, located on the rear axle.
Oscillate Stowed Relay CR84
Terminal 30 of the Oscillate Stowed relay, CR84,
receives power from the Platform Down limit switch,
LS6. When the platform is raised above LS6,
power to terminal 30 will be cut.
Terminal 86 of CR84 is connected to pin J2-C5 at
the ECM. Pin J2-C5 is powered anytime the Brake
Release valve coil Y2 is energized, thus energizing
CR84 terminal 87 and, ultimately, all four
oscillating valve coils, allowing oil to pass between
the oscillating cylinders. J2-C5 continues to power
terminal 86 for 0.5 seconds after Y2 is
de-energized.
GS-84 • GS-90
September 2016
Part No. 1272222