B3.9 and B5.9 Series Engines
Battery Cables and Connections (013-009)
Section 13 - Electrical Equipment - Group 13
NOTE: Always connect the negative (-) battery cables last.
Connect all battery cables.
Battery Cables and Connections
Initial Check (013-009-001)
Cranking Circuit or Battery Cable Test
Attach the carbon pile tester and multimeter. Apply 500
amps of load (250 amps for a 24-VDC system), and mea-
sure the positive and negative voltage losses. Add (V1) and
(V2) together for a total battery cable voltage drop. The
measured voltage drop must be less than 0.5 VDC for a
12-VDC system or less than 1 VDC for a 24-VDC system.
If the voltage drops are excessive, repair or replace the
Maximum Voltage Drop
Batteries can emit explosive gases. To avoid personal
injury, always ventilate the compartment before servic-
ing the batteries. To avoid arcing, remove the negative
(-) battery cable first, and attach the negative (-) battery
Inspect the battery terminals for loose, broken, or corroded
Repair or replace broken cables or terminals.