Snorkel AB80J - Manual (Page 35)

Chapter 7 – Prestart Inspection
AB80J/AB85J – 0420453 31
To inspect the air filter:
1. Turn the battery disconnect switch on and close the
cowling door.
2. On dual fuel machines, set the fuel switch to either
LPG or gasoline.
3. At the lower controls, place the emergency stop
switch in the on position.
4. Insert the key into the start switch and turn the engine
on.
5. Check the clear zone after running the engine for 30
seconds.
• If the indicator is red, replace the filter.
• If the indicator is clear, the filter is OK.
6. Shut off the engine.
Charging System
On machines with Cummins or Deutz engines, when
the engine is running, the ammeter needle (refer to
Figure 7.7) should be to the right of “0.” Left of the “0” is
discharging.
On machines with GM engines, when the engine is run-
ning, the voltmeter (refer to Figure 7.7) should indicate
between 12.5 and 14 volts.
Cold Weather Start Kit
If the machine is equipped with an optional engine block
heater or radiator hose in-line heater, visually inspect
the heater and power cord. Inspect 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. The batteries are behind the door
on the right side of the turntable (refer to Figure 7.8).
These batteries supply 12 volt DC electrical power to
operate the aerial platform electrical and electrohydraulic
components, including the emergency power system.
Figure 7.8 – Batteries
Machines with gasoline engines have one battery and
machines with diesel engines have two batteries.
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.
Caution
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 automatically charged when the engine
is running. Include the batteries 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 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. 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. Make sure the cables and wires are properly
routed to avoid sharp edges, pinching, and scuffing.
Hydraulic System
Hydraulic power is supplied from an engine driven vari-
able displacement piston pump.
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 escaping
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.
Caps
Terminals