Target Audience:
Owners, technicians, and mechanics of the Caterpillar 320C hydraulic excavator
Advantage:
Comprehensive wiring and electrical schematics specific to the 320C, enabling accurate diagnostics and repair
Content:
Detailed wiring diagrams and electrical schematics
Benefit:
Facilitates understanding of complex electrical systems, efficient troubleshooting, and proper maintenance
Starting and Charging System:
Schematics for starter motor, alternator, and battery connections
Engine Electrical System:
Wiring for engine sensors, ECM, and related components
Hydraulic System Electrical Control:
Electrical connections for hydraulic solenoids and valves
Monitoring System:
Wiring for gauges, indicators, and monitoring modules
Lighting System:
Diagrams for work lights, beacon, and panel lights
Air Conditioning Electrical:
Electrical schematic for HVAC system components
Wiper and Washer System:
Wiring for wiper motor and washer pump
Audio System:
Electrical connections for radio and speakers
Connectors and Harnesses:
Detailed info on connector pinouts and harness routing
Ground Points:
Locations and schematics for ground connections
Fuse and Relay Boxes:
Maps of fuse and relay assignments
Troubleshooting Guidance:
Electrically oriented diagnostic procedures
Component Location:
Where electrical components are physically located on the machine
Schematic Symbols:
Reference for interpreting the schematic diagrams
Wire Colors and Sizes:
Identification of wire colors and gauge sizes
Compatibility:
Works on any device with a PDF reader
Requirements:
No special software required
Searchability:
Bookmarked and text-searchable (if available)
Print Quality:
High resolution (300 DPI) for clear diagrams
Binding Type:
Digital (no physical binding)
Paper Type:
N/A - Digital format only
Engine Make/Model:
Caterpillar 3066T (typical for 320C)
Type:
In-line 6-cylinder, turbocharged diesel
Power Output:
Approximately 138 hp (103 kW) at 1800 rpm (common)
Displacement:
6.6 liters (approximately)
Fuel System:
Direct injection
Overall Length:
Approximately 31.5 ft (9.6 m) (with boom and arm)
Overall Width:
Approximately 10.5 ft (3.2 m)
Operating Weight:
Approximately 43,000-46,000 lb (19,500-20,900 kg)
Safety Ratings:
N/A - not applicable for heavy equipment
Active Safety:
Engine shutdown system, alarms for vital functions
Passive Safety:
Rollover protective structure (ROPS) available, seat belts, guarded cab
Engine Oil Change:
Every 250 hours (typical)
Hydraulic Oil Change:
Every 2000 hours (typical)
Oil Filter Change:
Every 250 hours
Fuel Filter Change:
Every 500 hours
Air Filter Cleaning/Replacement:
As needed or per indicator
Engine Oil Spec:
API CH-4 or higher, SAE 15W-40 (common)
Hydraulic Oil Spec:
Caterpillar HYDO Advanced 10
Coolant:
Caterpillar extended life coolant
Known Issues:
Potential electrical connector corrosion due to moisture
Wear Items:
Bucket teeth, cutting edges, hoses, seals