Snorkel TB37 2001 - Manual (Page 27)

Figure 7.8—Ammeter
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, 335
amp, 12 volt batteries. These batteries supply 12 volt
DC electrical power to operate the aerial platform elec-
trical and electrohydraulic components.
Machines with gasoline engines have one battery and
machines with diesel engines have two batteries.
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury can re-
sult from a chemical explosion. Do not smoke or
permit open flames or sparks when checking the
batteries.
Even with low voltage electrical systems, severe
arcing can occur. Electrical shock or component
damage can result from contact with energized
conductors. Use caution when working with any
electrical device.
The batteries are behind the door on the right side of the
turntable.
Emergency Power Battery
The emergency power battery (refer to Figure 7.9) is be-
hind the door on the right side of the chassis. The bat-
tery is automatically charged when the engine is
running.
Figure 7.9—Emergency Power Battery
Include the emergency power battery when inspecting
and servicing the electrical system.
Battery Fluid Level
Remove the caps from each battery (refer to Figure
7.9). Visually check the battery fluid level. If the level is
not within
1 /
4
″
(6 mm) of the bottom of the filler neck in-
side each hole, add distilled 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 (refer to Figure 7.9). They should be clean and free
of corrosion and dirt. 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 7.10). Make sure the cables and
wires are properly routed to avoid sharp edges, pinch-
ing, and scuffing.
TB37 – 0172094 page 7 - 3
Chapter 7. Prestart Inspection
DANGER
CAUTION
Caps
Terminals
Ammeter
Hour Meter
Temperature Gauge