Case 9040B Excavator Service Manual

Table of Contents

Safety, General Information and Standard Torque
Specification
6-830 Diesel Engine Specification Details
Electrical Specification and Troubleshooting
Electrical Schematics
Tracks, Rollers and Idlers
Hydraulic Specification, Troubleshooting and Pressure Checks
Hydraulic Schematic

Manual Extract:

Motion Alarm
If the motion alarm waning switch is ON, the alarm will sound continuously when the travel pressure switch is ON.

A travel pressure switch is tuned on by travel lever operation and 24V is sent to the buzzer for 10 seconds.
If the motion alarm switch is OFF, the alarm will sound for approximately 10 seconds after the travel pressure switch is activated.
A travel pressure switch is tuned on by travel lever operation and 24V is sent to the buzzer for 10 seconds.

If a solenoid valve or relay is shorted, it stops the output of a power transistor which protects the controller. “Elec. Problem” is indicated at this time in the message display. By performing a self check, the location of the shorted circuit is indicated.
Based on the shorted circuit location, check the wiring and components.