B3.9 and B5.9 Series Engines
Section 13 - Electrical Equipment - Group 13
The following special tools are recommended to perform procedures in this section. The use of these
tools is shown in the appropriate procedure. These tools can be purchased from your local Cummins
Authorized Repair Location.
Use to measure electrical circuit: Voltage (VDC), resistance
(ohms), and current (amps).
The Fleetguard refractometer is used to check the charge con-
dition of a conventional battery.
System Analyzer/Battery Tester
Use to test the output amperage of maintenance-free or conven-
tional vent cap batteries.