Lull 944E-42 Service Manual - Manual (Page 528)

Electrical System
9.18 Model 644E-42/944E-42 Rev. 6/04
9.2 SERVICE WARNINGS
9.2.1 General
9.2.2 Battery
9.3 SPECIFICATIONS
Electrical system specifications are listed in Section 2,
“General Information, Specifications and Maintenance.”
CAUTION:
DO NOT disconnect any
wiring without first stopping the engine, turning
all electrical switches to the OFF position and
disconnecting the battery ground (-) cable from
the battery. Failure to remove the negative (-)
battery cable will result in damage to vehicle
electronic systems.
CAUTION:
Before performing ANY
welding on vehicle, disconnect the negative (-)
battery cable at the negative (-) battery
terminal. Failure to remove the negative (-)
battery cable will result in damage to vehicle
electronic systems.
CAUTION:
(944E-42 Only) When doing
welding anywhere on the vehicle disconnect
the wire harness (1 and 2) from the Engine
Control Module (ECM) (3) on the engine.
CAUTION:
DO NOT cause a short circuit
by connecting leads to incorrect terminals.
Always identify a lead and its correct terminal.
A short circuit or wrong connection creating
reverse polarity will immediately and
permanently ruin internal components within
the electrical system.
MU5510
944E-42 Only
1
2
3
CAUTION:
DO NOT momentarily or
“flash” connect a terminal to check for current
flow. No matter how brief the contact, internal
components may be ruined.
WARNING:
All lead acid batteries
generate hydrogen gas, which is highly
flammable. If ignited by a spark or flame, the
gas may explode violently, causing spraying of
acid, fragmentation of the battery, and possible
severe personal injuries, particularly to the
eyes. Wear safety glasses when working near
the battery.
WARNING:
Avoid battery acid. Battery
acid can cause chemical burns or other
serious injury. In case of contact with battery
acid, flush immediately with water.
WARNING:
Charge the battery in a well-
ventilated area only. Always turn battery
chargers OFF before connecting to or
disconnecting from a battery.
CAUTION:
DO NOT disconnect the
battery while the engine is running. This will
cause a voltage surge in the alternator
charging system that will immediately ruin
internal components.
CAUTION:
DO NOT connect a battery
into the system without checking for correct
polarity and voltage.