Snorkel TB85J - Manual (Page 37)

Chapter 7 – Prestart Inspection
TB80/TB85J – 0112477 33
Cold Weather Start Kit—Block Heater
If the machine is equipped with an optional engine block
heater, visually inspect the heater and power cord. In-
spect for leaks around the heater and for damage to the
power cord.
Electrical System
Electrical power is supplied from either one or two, 550
CCA, 12 volt batteries. These batteries supply 12 volt DC
electrical power to operate the aerial platform electrical
and electrohydraulic components.
Machines with gasoline engines have one battery and
machines with diesel engines have two batteries.
A
Warning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury can
result from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
A
Caution
Even with low voltage electrical systems, severe
arcing can occur. Electrical shock or component
damage can result from contact with energized con-
ductors. Use caution when working with any elec-
trical device.
The batteries are behind the door on the left side of the
turntable.
Emergency Power Battery
The emergency power battery (refer to Figure 7.7) is be-
hind the door on the right side of the chassis. The battery
is automatically charged when the engine is running.
Figure 7.7 – Emergency Power Battery
Include the emergency power battery when inspecting
and servicing the electrical system.
Battery Fluid Level
Remove the caps from each battery. Visually check the
battery fluid level. If the level is not within 1 /
4
″ (6 mm) of
the bottom of the filler neck inside each hole, add dis-
tilled water.
Replace the caps on the batteries. The caps must be in
place and tight during machine operation.
Battery Terminals
Check the top of the batteries, the terminals, and cable
ends. They should be clean and free of corrosion. Clean
the top of the batteries if necessary. Clean the terminals
and cable ends with a wire brush or terminal cleaning
tool. All cable ends must be securely fastened to the
terminals.
Cables and Wiring Harness
Inspect all cables and wiring for wear and/or physical
damage such as loose connections, broken wires, and
frayed insulation. Check the wiring in areas where a change
in routing direction may cause them to become pinched
(refer to Figure 7.8). Make sure the cables and wires are
properly routed to avoid sharp edges, pinching, and scuff-
ing.
Figure 7.8 – Cables and Wiring Harness
Hydraulic System
Hydraulic power is supplied from an engine driven vari-
able displacement piston pump.
A
Danger
Hydraulic fluid escaping under pressure can have
enough force to inject fluid into the flesh. Serious
infection or reaction can result if medical treatment
is not given immediately. In case of injury by escap-
ing hydraulic fluid, seek medical attention at once.
The hydraulic reservoir is behind the door on the left side
of the turntable. The pump is mounted on the engine.
Fluid Level
Check the hydraulic reservoir fluid level with the aerial
platform stowed on a level surface. The fluid level must
be between the full and add marks as viewed on the sight
glass (refer to Figure 7.9).
Caps
Terminals