Part of the New Holland Repair Manuals.
This is the factory repair manual for the New Holland E70 hydraulic crawler excavator. It is a Kobelco-lineage workshop manual, so it is organised by chapter number rather than by a walk around the machine: specifications and maintenance standards first, then the Mechatro control system, the hydraulic and electrical systems, the components, the upper slewing body and travel system, four separate troubleshooting chapters, a complete Isuzu A-4JG1 engine service chapter, and finally breaker and nibbler mounting.
What's Inside This New Holland E70 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information and Safety | 1-21 | How to Use the Manual, Shop Safety, Machine Hazards and Safety Plates |
| Specifications | 22-39 | Machine and Engine Specification Tables, Hydraulic Components, Weights, Swing and Travel Speeds, Gradeability, Bucket and Arm Data |
| Attachment Dimensions | 40-59 | Overall Machine Dimensions with and Without Boom, Arm and Bucket, Backhoe, V-Shape and Slope-Finishing Bucket Dimensions |
| Tools | 60-81 | Special Service Tools with Their Part Numbers, And Which Chapter's Procedure Calls for Each |
| Standard Maintenance Time Schedules | 82-101 | Scheduled Service Intervals by Hours, The Standard Labour Time Allowed for Each Task, And the Consumables Each Service Consumes |
| Maintenance Standard and Test Procedure | 102-131 | Maintenance Standards, Wear Limits and the Performance Test Procedures to Measure Them |
| Mechatro Control System | 132-151 | Mechatro Controller Operation, Pump and Valve Command Logic, Sensors and Control Maps |
| Hydraulic System | 152-213 | Variable Displacement Axial Piston and Gear Pump, 6-Spool Control Valve Plus the Dozer Spool, Swing and 2-Speed Travel Motors, Cylinders, Oil Cooler, Circuit Operation |
| Electrical System | 214-279 | Electrical Architecture, 24 V Starting and Charging Circuits, Harnesses, Connectors and Sensors |
| Components System | 280-389 | Hydraulic Pump and Its Regulator (Kawasaki K3SP36B Twin-Pump Unit) with the Attached Gear Pump That Supplies Pilot and Dozer Pressure, Control Valve Spools, Swing and Travel Motors, Cylinders and Their Overhaul |
| Air-Conditioning System | 390-431 | Cab Heating, Ventilation and Air Conditioning, Compressor and Condenser, Refrigerant Handling |
| Attachments | 432-467 | Boom, Arm and Bucket Removal and Refitting, Pins and Bushings with Their Wear Limits, Cylinder Mounting and Shimming, Backhoe, V-Shape and Slope-Finishing Bucket Fitment |
| Upper Slewing Body | 468-561 | Slewing Motor and Bearing, Upperstructure Removal, Swing Circuit and Brake, Counterweight |
| Travel System | 562-645 | Travel Motors and Reduction Gears, Track Link, Shoes, Idler Adjuster, Undercarriage Service |
| Troubleshooting (Mechatro Control) | 646-657 | How to Evaluate a Problem Before Touching the Machine: Verify Model and Serial Number, The Attachment Fitted and Whether the Combination Is Proper, The Hour-Meter Reading and the Background of the Fault, Then Follow the Ordered Mechatro Fault-Location Process |
| Troubleshooting (Hydraulic System) | 658-683 | Hydraulic Diagnostic Chart by Group: Engine Revolution, P1, P2 and P3 Pumps, Pump Regulator, Pilot Relief Valve, Travel-Straight, Travel, Swing, Boom, Arm, Bucket and Conflux Spools, P2 Bypass Cut Valve |
| Troubleshooting (Electric) | 684-707 | Circuit-By-Circuit Electrical Fault Finding, Connector Back-Probing Points, Sensor and Switch Resistance Checks, 24 V Starting and Charging Circuit Tests |
| Troubleshooting (Engine) | 708-725 | Engine Fault Finding by Symptom, Linking Back to the Engine Chapter |
| Isuzu A-4JG1 Diesel Engine | 726-955 | Full Isuzu A-4JG1 Engine Service: Specifications and Clearances, Cylinder Head and Valve Train, Pistons and Crankshaft, Fuel and Lubrication Systems, Engine Overhaul |
| Mounting the Breaker and Nibbler | 956-1050 | Hydraulic Breaker and Nibbler Installation, Their Circuits, Piping and Control |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| E70 | ||
| Engine model | ISUZU CC-4JG1 (ISUZU 4JG1NABGA on EU specification machines) | |
| Engine type | Water-cooled, 4-cycle, direct injection | |
| Cylinders, bore and stroke | 4 cylinders, 95.4 mm x 107 mm (3.76 in x 4.21 in) | |
| Total displacement | 3059 cc (187 cu in) | |
| Rated output and speed | 40.5 kW at 2000 rpm (55 PS at 2100 rpm) | |
| Maximum torque | 187 Nm (138 ft lbs) at 1800 rpm | |
| Starter and alternator | 24 V / 3.2 kW starter, 24 V / 30 A alternator | |
| Control valve | 6-spool control valve plus a 1-spool dozer valve | |
| Swing speed | 12.5 rpm (11.5 rpm on EU specification machines) | |
| Gradeability | 70 percent (35 degrees) | |
| Main hydraulic pump (Kawasaki K3SP36B) | ||
| Displacement capacity | 31.4 cm3/rev x 2 | |
| Main hydraulic pump | ||
| Maximum pressure | 29.4 MPa (4270 psi) | |
| Maximum flow | 66 L/min (18 gal/min) x 2 | |
| Swing motor | ||
| Type, Swing motor | Axial piston | |
| Travel motor | ||
| Type, Travel motor | 2-speed axial piston | |
| Iron shoe / rubber shoe | ||
| Travel speed | 3.1 / 5.5 km/h and 3.2 / 5.5 km/h | |
