Caterpillar 320C GLA00001-UP Repair Manual — Wiring Diagrams

Name: Caterpillar 320C GLA00001-UP Repair Manual — Wiring Diagrams
Author: Caterpillar

$79.95

Model: 320C

Type: Excavator

Serial: GLA00001-UP

5954 Pages·483 MB·Searchable PDF·English·Print-Ready

✓ Wiring Diagrams
✓ Hydraulic Schematics
✓ Torque Specs
✓ Multi-Level Bookmarks (5-level navigation)

Same factory service manual used by authorized dealer technicians.

Preview Sample Pages (PDF)

This is the factory repair library for the Cat 320C, 320C L, and 320C LN hydraulic excavators, the kind of set a dealer tech works from. It covers the engine end to end: air inlet and exhaust with turbocharger overhaul, fuel injection nozzle testing and timing checks, valve lash, compression and blowby testing, cooling and lubrication systems. On the machine side you get the full hydraulic system with pump regulation and travel motor testing, final drives with duo-cone seal installation, undercarriage and track adjuster service, swing gear, boom removal, and quick coupler work. Electrical coverage includes wiring schematics, CID/FMI code troubleshooting, and ECM flash programming; note that roughly 455 pages of the electrical section document EquipmentManager and Product Link dealer telematics software rather than machine repair.

Other editions of this manual

What's Inside This Caterpillar 320C Repair Manual

System	Pages	Key Topics
Air Inlet and Exhaust System	1-55	Turbocharger Inspection and Overhaul, Exhaust Manifold Removal and Installation, Inlet Manifold Service, Air Cleaner Removal, Muffler Removal
Basic Engine	56-384	Finding Top Center Position, Fuel Injection Nozzle Testing, Crankcase Blowby Pressure Testing, Compression Testing, Valve Lash Inspection and Adjustment, Valve Guide Inspection
Cooling System	385-470	Overheating Checks, Cooling System Inspection and Pressure Testing, Engine Oil Cooler Service, Water Temperature Regulator Testing
Electrical Systems Operation, Testing and Controls	471-625	Power Circuit, Start and Stop Circuit, Charging Circuit, Engine and Pump Speed Regulation, Automatic Engine Control, Switches and Sensors, Solenoid Valves
Electrical - EquipmentManager and Product Link (Dealer Software, Not Machine Repair)	626-1080	Manage Users and Equipment Groups, Product Link Installation and Subscriptions, Planned and Major Repair Tracking, Asset Watch and Geographic Fencing, Health Watch and Fuel Reports
Electrical - Troubleshooting, Wiring Harness and System Schematics	1081-1774	Alternator and Charging System Testing, Wiring Harness Open and Short Circuit Testing, Diagnostic Trouble Code Troubleshooting, Electronic Control Module Replace and Flash Program, System Schematics
Engine Arrangement	1775-1804	Engine Design, Engine Speed Performance Testing, Engine Troubleshooting
Frame and Body	1805-1904	Travel Motor Fasteners and Guard, Hood Removal and Installation, Swing Gear and Bearing Service
Fuel System	1905-2246	Governor Actuator Control, Air in Fuel Testing, Fuel Injection Nozzle Testing, Fuel Injection Timing Check, Fuel Quality Testing
Hydraulic System	2247-4386	Main and Pilot Hydraulic System Description, Main Control Valve and Pump Regulation, Boom and Stick Cylinder Lines, Travel Motor Testing, Diagnostic Trouble Codes, Gear Pump Disassembly, Counterbalance and Flow Divider Valves
Implements	4387-4506	SmartBoom Hydraulic System, Boom and Fore Boom and Stub Boom Service, Boom Removal
Lubrication System	4507-4578	Engine Oil Pressure and Pump Testing, Excessive Oil Consumption Diagnosis, Crankcase Breather Service
Machine Arrangement	4579-4591	Service Intervals, Heating and Air Conditioning Service Publications
Operator Station	4592-5566	Air Conditioning System Schematic, Refrigerant Receiver-Dryer and Recovery, Cab Sensors, Coolant Temperature Sensor
Power Train	5567-5661	Final Drive Testing and Disassembly, Duo-Cone Seal Installation, Travel on Level Ground Testing
Schematic	5662-5751	Hydraulic Attachment Schematics, Electrical Harness and Wire Schematic Symbols, Component Location Diagrams
Service Equipment and Supplies	5752-5809	Cab Pressurization and Filtration, Refrigerant Manifold Gauge Set Service
Torque Specifications	5810-5858	Ground Engaging Tool Fastener Torque, Standard Bolt Torque, Straight Thread O-Ring Fitting Torque
Undercarriage	5859-5926	Front Idler and Recoil Spring Service, Hydraulic Track Adjuster Disassembly
Work Tools Arrangement	5927-5932	Medium Pressure Hydraulic System
Work Tools	5933-5954	Bucket Adjuster and Removal, Hydraulic and Mechanical Quick Coupler Service

Quick Reference Specifications

Specification	Value	Page
Exhaust manifold nut torque (3066 Engine)	18 +/- 4 N.m (13 +/- 3 lb ft)	p. 20
Cylinder head bolt torque (3066 Engine)	118 +/- 5 N.m (87 +/- 4 lb ft)	p. 244
Alternator retaining nut torque	132 to 162 N.m (95 to 120 lb ft)	p. 1717
Fuel injection line nut torque	26.5 to 32.4 N.m (20 to 24 lb ft)	p. 70
Swing relief valve pressure setting	26000 +/- 980 kPa (3750 +/- 140 psi)	p. 2645
Work tool relief valve pressure setting	20600 +/- 1500 kPa (2990 +/- 220 psi)	p. 2782
Main relief valve pressure setting	34300 +/- 490 kPa (4975 +/- 71 psi)	p. 3884
Line relief valve pressure setting (boom, stick, bucket)	36300 +/- 490 kPa (5265 +/- 71 psi)	p. 3884
Negative flow control pressure (drive pump shim adjustment)	2350 kPa (340 psi); 0.1 mm shim change = 3 L/min (0.8 US gpm) flow change	p. 2703
Hydraulic oil test temperature for main relief valve check	55 +/- 5 C (131 +/- 9 F)	p. 2617
Accumulator charge pressure at -25 C (-13 F)	1490 kPa (216 psi)	p. 2606
Accumulator charge pressure at -10 C (14 F)	1580 kPa (229 psi)	p. 2606

Brand	Caterpillar
Model	320C
Machine Type	Excavator
Manual Type	Repair Manual
Language	English
Format	Searchable PDF (Digital Download)
Pages	5,954
File Size	483 MB
Serial Range	GLA00001-UP
Wiring Diagrams	Yes
Hydraulic Schematics	Yes
Torque Specifications	Yes
Bookmarked / Indexed	Yes

Caterpillar 320C GLA00001-UP Repair Manual — Wiring Diagrams

Other editions of this manual

What's Inside This Caterpillar 320C Repair Manual

Quick Reference Specifications

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