Item 19 - Oil Pressure; Item 20 - Battery-Charging Alternator - Detroit Diesel 50 Series Operator's Manual

If the low coolant level sensor is
installed in the top tank of the radiator,
it should be tested for proper operation
every 100,000 miles (160,000 km)
or 12 months, whichever comes first.
Authorized Detroit Diesel distributors
are properly equipped to perform this
service.
Item 19 – Oil Pressure
Under normal operation, oil pressure
is noted each time the engine is
started. In the event the equipment
has warning lights rather than pressure
indicators, the pressure should be
checked and recorded every 60,000
miles (96,000 km) for vehicle engines
or 600 hours for stationary and
industrial engines.
Item 20 – Battery-Charging
Alternator
Precautions must be taken when
working on or around the alternator.
The diodes and transistors in the
alternator circuit are very sensitive
and can be easily destroyed.
1. Avoid grounding the output
terminal. Grounding an
alternator's output wire or
terminal (which is always "hot,"
regardless of whether or not
the engine is running) and
accidentally reversing the battery
polarity will result in equipment
damage.
All information subject to change without notice. (Rev. 01/ 04)
6SE550 0401 Copyright © 2004 DETROIT DIESEL CORPORATION
SERIES 50 OPERATOR'S GUIDE
2. Do not reverse battery
connections. This can also
cause damage.
3. Never disconnect the battery
while the alternator is operating.
Disconnecting the battery can
result in damage to the battery
diodes. In applications which
have two (2) sets of batteries,
switching from one set to the
other while the engine is running
will momentarily disconnect
the batteries. This can result in
equipment damage.
4. If a booster battery is to be used,
batteries must be connected
correctly (negative to negative,
positive to positive) to avoid
equipment damage.
5. Never use a fast charger with the
batteries connected or as a booster
for battery output.
For information on the alternator
assembly, contact an authorized
® ®
Delco Remy or Bosch distributor,
depending on manufacturer.
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