Hot Parts - Kohler 5E Service Manual

Grounding electrical
Hazardous voltage can
severe injury or death. Electrocution
is possible whenever electricity is
present. Open the main circuit
breakers of all power sources before
servicing the equipment. Configure the
installation to electrically ground the
generator set, transfer switch, and
related equipment and
circuits to comply with applicable codes
and standards. Never
electrical leads or appliances when
standing in water or on wet ground
because these conditions increase the
risk of electrocution.
Disconnecting the electrical load.
Hazardous voltage can
severe injury or death. Disconnect
the generator set from the load by
opening the line circuit breaker or by
disconnecting the generator set output
leads from the transfer switch and
heavily taping the ends of the leads.
High voltage transferred to the load
during testing may cause personal
injury and equipment damage. Do not
use the safeguard circuit breaker in
place of the line circuit breaker. The
safeguard circuit breaker does not
disconnect the generator set from the
load.
Welding the generator set.
cause severe electrical equipment
damage. Before welding the generator
set perform the following
(1) Remove the battery
negative (- -) lead first. (2) Disconnect
all engine electronic control module
(ECM) connectors. (3) Disconnect all
generator set controller and voltage
regulator circuit board connectors.
(4) Disconnect the engine battery-
charging alternator connections.
(5) Attach the weld ground connection
close to the weld location.
Short circuits.
voltage/current can cause severe
injury or death. Short circuits can
cause bodily injury and/or equipment
damage. Do not contact electrical
connections with tools or jewelry while
making adjustments or
Remove all jewelry before servicing the
equipment.
IV Safety Precautions and Instructions
equipment. Testing
cause Hazardous
severe injury or death. High voltage is
present at the voltage regulator heat
sink. To prevent electrical shock do not
touch the voltage regulator heat sink
when testing the voltage regulator.
(PowerBoostt, PowerBoostt III, and
PowerBoostt V
electrical models only)
Electrical backfeed to the utility.
contact
Hazardous backfeed voltage can
cause
Connect the generator set to the
building/marina electrical system only
through an approved device and after
the building/marina main switch is
cause opened.
cause severe injury or death to utility
personnel working on power lines
and/or personnel near the work area.
Some states and localities prohibit
unauthorized connection to the utility
electrical
ship-to-shore transfer switch to prevent
interconnection of the generator set
power and shore power.
Testing
Hazardous voltage or current can
cause severe injury or death. Have
trained and qualified personnel take
diagnostic
Can circuits.
equipment with electrically insulated
probes and follow the instructions of the
steps: test equipment manufacturer when
cables, performing voltage tests. Observe the
following precautions when performing
voltage tests: (1) Remove all jewelry.
(2) Stand on a dry, approved electrically
insulated mat. (3) Do not touch the
enclosure or components inside the
enclosure.
system to operate automatically.
(600 volts and under)
Hazardous
repairs.
the voltage regulator.
voltage can cause
voltage regulator
severe injury or death.
Backfeed connections can
system. Install
live electrical circuits.
measurements of live
Use adequately rated test
(4) Be prepared for the

Hot Parts

WARNING
Hot coolant and steam.
Can cause severe injury or death.
Before removing the pressure cap,
stop the generator set and allow it to
cool. Then loosen the pressure cap
to relieve pressure.
WARNING
Hot engine and exhaust system.
Can cause severe injury or death.
a
Do not work on the generator set until
it cools.
Checking the coolant level.
coolant can cause severe injury or
death. Allow the engine to cool.
Release pressure from the cooling
system before removing the pressure
cap. To release pressure, cover the
pressure cap with a thick cloth and then
slowly turn the cap counterclockwise to
the first stop. Remove the cap after
pressure has
released and the engine has cooled.
Check the coolant level at the tank if the
generator set has a coolant recovery
tank.
Servicing the exhaust system. Hot
parts can cause severe injury or
death. Do not touch hot engine parts.
The engine and exhaust system
components become extremely hot
during operation.
Hot
been completely
TP-5986 4/03