Lull 1044C-54 Series II Operation Manual - Manual (Page 42)

34
STABILITY SYSTEMS
BOOM/TRANSFER EXTEND LOCK
SYSTEM
The boom/transfer extend lock system is designed to
increase stability of the vehicle by limiting how far the
boom can be extended with the outriggers up.
Gauge and Light Cluster
When the boom is extended to a specific distance and
the outriggers are not lowered, the system will disable
the boom extend and transfer extend functions and light
the Boom/Transfer Extend Lock lamp (1) in the gauge
and light cluster. (See above figure.)
On models equipped with a standard carriage the boom
extension distance is approximately 25 feet. On models
equipped with an optional tower, the distance is
approximately 21 feet. The boom extension distance is
sensed by a proximity switch installed in the outer boom
section. Never disconnect or bypass the proximity
switch.
At this point, the left and right outriggers must both be
lowered to the ground to allow the boom or transfer
carriage to be extended further. See “Outrigger
Controls” on page 24 for information on outrigger
operation.
When both outriggers are lowered to the ground and
have made positive contact with it, pressure switches in
the outrigger cylinders send electrical signals to the
boom/transfer extend lock system. The system then
unlocks the boom extend and transfer extend functions.
The warning lamp will turn off.
BOOM/
TRANSFER
EXTEND
LOCK
REAR
OSC
LOCK
BRAKE
TRANSMISSION
DECLUTCH
WATER
°F
100
130
160
190
240
OIL
0
psi
20
40
60
80
PARK BRAKE
P
CHECK ENGINE
1
OV0030
Do not disconnect or
bypass proximity
switches.
Bypassing proximity
switches may result in
death or serious
personal injury !
W1056
WARNING
Do not disconnect or bypass the outrigger
cylinder pressure switches.
Do not restrict outrigger movement to
simulate normal outrigger operation.
Failure to follow these instructions may
result in death or serious personal injury!
CAUTION
IF BOOM CAPACITIES ARE EXCEEDED WITH
OUTRIGGERS DOWN, STRUCTURAL
DAMAGE MAY OCCUR. CONSULT LOAD
CHART FOR RATED CAPACITIES. DO NOT
EXCEED RATED LIFT CAPACITIES.
W1057