OPERATOR'S MANUAL

Preventive Maintenance Electrical System
Model 330 PB1318 3/01 – 187 –
Removing and Installing Batteries:
1. Be sure all switches on the vehicle are turned OFF.
2. Disconnect negative ground cable.
3. Disconnect positive cable.
4. Unscrew bolt of holding plate with open end wrench.
To reinstall batteries:
1. Place batteries in vehicle and tighten bolt of holding
plate.
2. Reconnect positive cable.
3. Reconnect negative ground cable.
Battery Care
Regular attention to the charging system will help prolong the
service life of the batteries. Here are some common causes
of battery failure:
Overcharge:
this condition results from improper voltage
regulator adjustment. It results in overheating of the battery,
warped plates, and evaporation of electrolyte.
Undercharge:
the voltage regulator is malfunctioning or is
improperly adjusted, the drive belt is slipping, or your vehicle
has undergone long periods of standing idle or short distance
driving. These conditions result in battery plates becoming
covered with a hard coating.
Vibration:
loose battery hold-downs may cause battery
plate failure.
Short Circuits:
these discharge the battery by draining
electricity.
Dirty or Loose Connections:
improper connections may
stop the flow of electrical power to and from the battery.
Jump Starting Vehicles
Because of the various battery installations and optional
electrical systems, Peterbilt does not recommend that you
attempt to jump start your vehicle. If you have a battery prob-
lem, it is best to contact a Peterbilt Dealer or a reputable tow-
ing service.