JLG E300 Service Manual - Manual (Page 95)

SECTION 3 - CHASSIS & TURNTABLE
3121253 – JLG Lift – 3-61
3.13 DRIVE ORIENTATION SYSTEM
The Drive Orientation System (DOS) is intended to indi-
cate to the operator conditions that could make the direc-
tion of movement of the chassis different than the
direction of movement of the drive/steer control handle.
The system indicates to the operator the need to match
the black and white directional arrows on the platform
control panel to the arrows on the chassis. The system
uses a proximity switch mounted under the turntable, a
"target" mounted to the frame, an indicator light and an
override switch on the platform display panel. The proxim-
ity switch trips when the turntable is swung +/- 28
degrees off center of the normal driving position. This
occurs roughly when the boom is swung past a rear tire.
When the turntable is in the normal drive position with the
boom between the rear tires, no indications or interlocks
are made. When the machine is actively driving when the
turntable is swung past the switch point, the system is
ignored until drive/steer is released. When drive is initiated
with the boom swung past the switch point, the DOS indi-
cator will flash and the drive/steer functions will be dis-
abled. The operator must engage the DOS override switch
to enable Drive/steer (high drive will remain disabled).
When the DOS is enabled, the DOS indicator will be illumi-
nated continuously and a 3-second enable timer will be
started and will continue for 3 seconds after the end the
last drive/steer command. If the timer expires, the DOS
override switch must be re-engaged to enable drive/steer.
3.14 HOODS
The right hood weighs 15 lbs. (6.8 kg) and the left hood
weighs 10.3 lbs. (4.7 kg). See Figure 3-28., Hoods
THREADLOCKER JLG P/N 0100011
TORQUE 16-20 FT.LBS. (22-27 Nm)
Figure 3-28. Hoods