Filter
Top Products
2 — INTRODUCTION
2-3
Only one boom motion is permitted at a time, and only as long as the boom is within the
safe operating zone (Figure 2-3). When a selected boom motion reaches a safe operating
limit, the boom motion ceases and another boom motion must be selected within the safe
operating zone.
FTC
XLB-4319 SPECIFICATIONS
CAPACITY .......................................... 450 LB.
MAXIMUM PLATFORM HEIGHT ....... 37 FT.
WORK HEIGHT .................................. 43 FT.
POWER SOURCE .............................. 24V DC BATTERY OR GAS
45.9
42.6
39.4
36
32.8
24.5
26.3
23
19.7
16.4
13
9.8
6.5
3.2
0
B06-00-0430
9.8 6.5 3.2 0 3.2 6.5 9.8 1 3 16.4 19.7 2 3
Figure 2-3. Safe Operating Zone
Outrigger load sensing interlocks and interlock safety switches prevent all boom lifting
operations until the four outriggers are properly extended, the trailer is level, and the full
weight of the boom lift is loaded onto the outriggers. An interlock prevents the retracting
of any outrigger while the upper or lower boom is raised two inches (50 mm) or more.
Boom elevation speeds are adjustable from zero to 5.3 inches per second (0 to 27 ft/min).
A hydraulic hose failure at either retract-cylinder port will cause a counterbalance valve
to stop the return oil flow. It is strongly recommended that no one adjust or tamper with
these safety devices. If service is required, please notify Bil-Jax for instructions.
Emergency lowering of the basket is by manual valve plungers on the upper and lower
boom lift cylinders or by manual operation of a hand pump in the basket. Firmly pushing
in and holding a valve plunger manually retracts the boom lift cylinder. Smooth pumping
of the hand pump while engaging a single hydraulic valve lever enables boom operation
in case of a hydraulic power failure.
The XLB-4319 Hydraulic Boom Lift cylinders will not rust or corrode during storage
since the cylinder rod is fully immersed in oil. It is important that the cylinder rods be
kept clean and undamaged for the protection of the cylinder head packings.