APE 50 - Starting Motor Fails to Crank; Alternator Fails to Charge

7032 SOUTH 196th - KENT, WA 98032 - (253) 872-0141 / FAX (253) 872-8710
OPERATION / MAINTENANCE MANUAL
MODEL 50 VIBRATORY HAMMER WITH MODEL 260 POWER UNIT
- APPENDIX A -
CUMMINS 6CT8.3 ENGINE
Possible Causes Remedy
22. ABNORMAL ENGINE COOLANT TEMPERATURE
Incorrect Fuel Injection Timing See your authorized dealer.
Incorrect Water Piping Connections Check shunt line (if equipped) and
from Engine to Radiator vent line for correct installation.
23. STARTING MOTOR FAILS TO CRANK
Low Output from Battery Check battery and charge or replace.
Defective Wiring or Switch Repair or replace.
Defective Solenoid Replace.
Defective Starting Motor Repair.
24. ALTERNATOR FAILS TO CHARGE
Drive Belt Loose Adjust belt.
Open or High Resistance in Inspect all cables and connectors.
Charging or Ground Return Clean, retighten or replace defective
Circuits or Battery Connections parts.
Excessively Worn, Open or Replace brush assembly.*
Defective Brushes
Open Rotor Field Coil Replace rotor assembly.*
25. ALTERNATOR CHARGING RATE LOW OR UNSTEADY
Drive Belt Loose Adjust belt.
Intermittent or High Resistance in Inspect all cables and connectors.
Charging or Ground Return Circuits Clean, re tighten or replace defective
or Battery Connections parts.
Excessively Worn, Sticky, or Replace brush assembly.*
Defective Brushes
Faulty Regulator Replace regulator.*
Shorted or Open Rectifier Diodes Replace defective rectifier diode
assembly in alternator.*
Grounded or Shorted Rotor Replace rotor assembly.*
A-3. Engine Troubleshooting (Continued...)
Page A-22