Snorkel TB42, Operator'S Manual

Page: 49 / 68

Chapter 8 – Operation
TB42/TB50 – 0075251EE 45
Four Wheel Drive
The machine may be equipped with a four wheel drive
system. This system operates full time and requires no
action by the operator.
Four wheel drive machines have a “4x4” decal on each
side of the chassis and all four of the wheel hubs are
drive hubs and look the same.
AC Generator
The generator supplies power to the electrical outlet only
when the engine is running and the machine is station-
ary. The machine functions will not operate when the
machine/generator selector switch is in the generator
position.
A
Caution
Cold hydraulic oil does not flow well and may pro-
duce improper generator output voltage. Improper
outlet voltage can damage some electrical power
tools and equipment. Warm the hydraulic oil be-
fore operating the generator.
Do not operate the generator unless the hydraulic oil tem-
perature is at least 38°C (100°F). Refer to Cold Weather
Start-Up for a hydraulic oil warm-up procedure.
Start the engine and place the machine/generator selec-
tor switch (refer to Figure 8.7) in the generator position.
Figure 8.7 – Upper Control Panel Front
The engine will run at high idle while the generator is
operating. The generator will continue to operate as long
as the engine is running and the switch is in the genera-
tor position.
Air Line
The optional air line may be used to conduct air for tool
operation at the platform. The input connector is at the
rear of the chassis and the output connector is at the
platform on the rotator guard. The maximum working pres-
sure of the line is 1,723 kPa (250 psi).
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload light
will stay illuminated at the upper and lower controls (refer
to Figures 8.5 and 8.6).
Figure 8.6 – Lower Controls
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine func-
tions are operational.
A
Danger
The aerial platform can tip over if it becomes un-
stable. Death or serious injury will result from a tip-
over accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the ma-
chine is being driven with the main boom below horizon-
tal and fully retracted. This allows the machine to be driven
without the system sensing an overload due to rough
ground conditions.
To eliminate repeated tripping of the system during ma-
chine operation, there is a five second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal and
fully retracted.
• removing excess load from the platform.
Machine/
Generator Switch
Platform
Overload Light