Testing rear oscillation lock circuit – Lull 1044C-54 Series II Service Manual User Manual
Page 305
Frame Tilt and Oscillation
31200079
7-23
Testing Rear Oscillation Lock Circuit
Use Table 7-1 for testing the rear oscillation lock circuit.
Table 7-1: Rear Oscillation Lock Circuit Test Matrix
OPERATING
PARAMETERS
S1
Proximity
Switch
S2
Proximity
Switch
Boom
Over 20°
Relay
Boom
Over 40°
Relay
Rear
Osc.
Locked
Lamp
Trans.
Disconnect
Lamp
Rear
Stabilizer
Cylinder
SV1
Solenoid
Valve
SV2
Solenoid
Valve
SV3
Solenoid
Valve
Boom below 20°
Service brake
released
Closed
Closed
Energized
Energized
Off
Off
Floating
Energized
Energized
Energized
Boom below 20°
Service brake applied
Closed
Closed
Energized
Energized
Off
Off
Locked
Energized
Energized
Energized
Boom below 20°
Service brake applied
Operating Frame Tilt
Closed
Closed
Energized
Energized
Off
Off
Floating
While
Frame Tilt-
ing
Energized
Energized
Energized
Boom above 20°
Service brake
released
Open
Closed
De-
energized
Energized
On
Off
Slow
Restricted
Oscillation
De-
energized
Energized
Energized
Boom above 20°
Service brake applied
Open
Closed
De-
energized
Energized
On
Off
Locked
De-
energized
Energized
Energized
Boom above 40°
Service Brake
Released
Open
Open
De-
energized
De-
energized
On
On
Locked
De-
energized
De-
energized
De-
energized
Boom above 40°
Service Brake
Applied
Open
Open
De-
energized
De-
energized
On
On
Locked
De-
energized
De-
energized
De-
energized
Boom above 40°
Footswitch
Depressed
Open
Open
De-
energized
De-
energized
On
On
Very Slow
Restricted
Oscillation
De-
energized
Energized
De-
energized