JLG 1850SJ Service Manual - Manual (Page 327)

SECTION 6 - JLG CONTROL SYSTEM
3121619 – JLG Lift – 6-45
Sensor #12 - Platform Level Angle Gravity Sensors
(2)
See (See Figure 6-25.)
These sensors are located on the Platform Support and are
used to measure platform angle with respect to gravity. They
are mounted such that they generate opposing signals.
Sensor #13 - Turntable Swing Angle (1)
This sensor is used to determine turntable swing angle. It is
used for turntable swing control when the boom is in trans-
port position (Axles Retracted). It is a dual output sensor in a
single mechanical body with electrically opposing signals
mounted integral to the electrical collector ring.
Sensor #14 - Steer Angle Sensor (4)
These sensors are used to measure wheel steer angles. These
rotary sensors are mounted on top of each king pin.
Sensor #15 - Axle extend/retract Sensor (4)
These sensors are used to measure axle rotation between the
retracted and extended positions. Each sensor is mounted
between the frame and an axle.
Sensor #16 - Brake-Two Speed Pressure Sensor (1)
This pressure switch monitors that there is no pressure present
when the associated valves are not activated.
Sensor #17 - Chassis Tilt Sensor (Externally
mounted) (1)
This sensor is the primary tilt sensor and measures the tilted
angle of the turntable relative to gravity. It is mounted on a
bracket on the left side of the turntable adjacent to the UGM
and BLAM module. It is a dual axis output sensor in a single
body.
Sensor #18 - Tilt Sensor (1)
This sensor is integral to the UGM. This sensor is the secondary
tilt sensor and measures the tilted angle of the chassis relative
to gravity. It is used to check plausibility of the primary chassis
tilt sensor reading (See Sensor #17).
Sensor #19 - Warm up Switch (1)
This switch is located on Main Control valve. It monitors the
temperature of the main control valve.
Sensor #20 - Main Valve Pressure Transducer (1)
This pressure transducer is located on the main control valve.
It is used to monitor pressure of the lower pressure functions
of the machine (all control valve functions except Lift and Tele-
scope), to assure that they are within the regulated range.
PIN # D ESC SEN SOR H AR N ESS
P IN #1 P OWE R RE D RE D
P IN #2 P WM OUT WHITE B LUE
P IN #3 GROUND B LA CK B LA CK
AN GL E SEN SOR # 2 (L EFT)
PIN # D ESC SEN SOR H AR N ESS
P IN #1 P OWE R RE D ORA NGE
P IN #2 P WM OUT WHITE Y E LLOW
P IN #3 GROUND B LA CK B LA CK
SENSOR INSTALLATION ON LEFT
& RIGHT SIDES OF ROTATOR
(LEFT SIDE, SENSOR #2 SHOWN)
SENSOR
MOUNT
MOUNTING
BOLT
PUSH NUTS
SENSOR COVER
Torque 34 Nm
ANGLE SENSOR
SENSOR
COVER
SENSOR
MOUNT
BOLT,
THREADLOCKER
P/N-0100035
BOLT, WASHER,
PUSH NUT,
THREADLOCKER
P/N-0100011
Figure 6-25. Platform Level Sensor