Part of the New Holland Repair Manuals.
This is the factory workshop manual for the New Holland E485B crawler excavator, published by New Holland Kobelco Construction Machinery. It is built the way Kobelco builds a workshop manual, in five parts: safety precautions, operational principle, operational performance test, troubleshooting, and repair instructions. The specification tables give the real pump numbers, the Mechatro control chapter explains how the machine's electronics command the hydraulics, and troubleshooting is split into a code-led part and a symptom-led part before the repair instructions take the machine apart.
What's Inside This New Holland E485B Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Index | 1-6 | How to Use the Manual, Page Numbering Scheme, The Five Parts the Workshop Manual Is Built From, Additional References |
| Safety Precautions | 7-54 | General Shop Safety, Machine-Specific Hazards, Safety Plates and Their Locations |
| Operational Principle: Specifications | 55-74 | Machine and Component Specification Tables, Hydraulic Pump and Motor Ratings, Pressures, Flows, Input Power and Torque |
| Operational Principle: Mechatro Control and Electrical System | 75-152 | Mechatro Control System Operation, Electrical System, Sensors and Controllers, Component Operation |
| Operational Principle: Hydraulic Components | 153-290 | Hydraulic Pump Assembly, Pilot Valve, Control Valve with the Travel, Travel-Straight, Bucket Flow Summation and Option Flow Summation Circuits, Swing Device, Travel Device, Swivel Joint, Cylinders, Air Conditioner System |
| Operational Performance Test | 291-326 | Performance Inspection Standard Table, Preparation for Performance Tests, Measurement of Engine Speed and Hydraulic Pressure, Measuring Travel, Swing, Attachment and Swing-Bearing Performances, Mechatro Controller Engine Control Input and Output and Its A-B Output Adjustment |
| Troubleshooting by Error Codes | 327-400 | Error Code Index and the Diagnostic Procedure Behind Each Code |
| Troubleshooting by Trouble | 401-440 | Symptom-Led Hydraulic Fault Finding: All Controls Slow or Dead, Engine Down or Stalled, Movement at Lever Neutral, Poor Fine Operability, Slow Boom Up and Boom Down, Slow Arm in and Independent Arm Out, Slow Bucket Digging, Plus the Electrical and Machine Complaints That Raise No Error Code |
| Repair Instructions: Precautions and Tightening Torques | 441-456 | Disassembly and Assembly Precautions, Standard Tightening Torque Tables |
| Repair Instructions: Upperstructure and Hydraulic Components | 457-799 | Upperstructure Removal, Pump Device, Control Valve, Swing Device, Travel Device, Swivel Joint and Cylinder Overhaul |
| Repair Instructions: Engine Mechanical and Lubrication | 800-939 | Engine Mechanical Disassembly and Assembly, Lubrication System Service |
| Engine Diagnosis and Diagnostic Codes | 940-1030 | Failure Diagnosis for Each Engine Status, Engine Diagnosis Code Tables and Their Procedures |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main hydraulic pump | ||
| Type | Variable displacement plunger pump with regulator attached | |
| Maximum displacement capacity | 200 cm3 x 2 | |
| Rated pressure | 31.4 MPa (4553 psi) | |
| Attachment boost pressure | 34.3 MPa (4980 psi) | |
| Maximum flow | 370 L/min (98 gal/min) x 2 at 7.8 MPa (1130 psi) | |
| Maximum input power at 1850 rpm | 247 kW (336 PS) | |
| Maximum input torque at 1400 rpm | 1275 N.m (940 lbf ft) | |
| Gear pump | ||
| Type and flow | Fixed displacement gear type, 27.8 L/min (7.3 gal/min) | |
| Swing motor | ||
| Type and displacement | Swash-plate fixed-displacement plunger, 151 cm3 (9.2 in3) | |
| Travel device | ||
| Speed reduction type | Planetary, 2-stage | |
New Holland E485B Common Problems This Manual Covers
The excavator is slow on a function, or loses power under load.
Measure before you strip. The operational performance test part lists the standard performances and the procedure for each, so you compare against a number rather than a memory. Rated pump pressure is 31.4 MPa with an attachment boost to 34.3 MPa, and maximum flow is 370 L/min per section at 7.8 MPa. If pressures and flows are correct and the machine is still slow, the fault is in the control valve or the Mechatro command, not the pump.
Manual Section: Operational Performance TestThe machine reports an error code.
Work the code-led part, which runs from page 327 to page 400 and gives the diagnostic procedure behind each code. Read the Mechatro control chapter first if the code names a controller or a regulator, because the circuit only makes sense once you know what the controller was commanding. If the engine is the subject, its own diagnosis codes and by-status failure diagnosis sit at the back of the book from page 940.
Manual Section: Troubleshooting by Error CodesSomething is wrong but the machine shows no error code.
Use the symptom-led part rather than guessing. Troubleshooting by trouble, at pages 401 to 440, starts from what the operator sees and narrows to a circuit, which is the right route for hydraulic and mechanical faults the electronics cannot detect. Once it names a component, the repair instructions carry the disassembly precautions and the tightening torques before any overhaul.
Manual Section: Troubleshooting by TroubleFrequently Asked Questions
What kind of manual is this?
A New Holland Kobelco factory workshop manual, built in five parts: safety precautions, operational principle, operational performance test, troubleshooting and repair instructions. That structure matters in use. You diagnose in the troubleshooting part, confirm against the standard performances in the test part, and only then open the machine using the repair instructions.
What are the hydraulic pump specifications?
The main pump is a variable displacement plunger pump with an attached regulator, 200 cm3 x 2 maximum displacement. Rated pressure is 31.4 MPa (4553 psi), rising to 34.3 MPa (4980 psi) on attachment boost. Maximum flow is 370 L/min (98 gal/min) per section at 7.8 MPa (1130 psi). It absorbs up to 247 kW (336 PS) at 1850 rpm and 1275 N.m (940 lbf ft) at 1400 rpm. A separate fixed displacement gear pump gives 27.8 L/min (7.3 gal/min).
Does it cover the Mechatro control system?
Yes, in the operational principle part at pages 75 to 152, along with the electrical system and component operation. That chapter is what makes the error-code troubleshooting usable, because it explains how the controller commands the pump regulator and the control valve before you start testing circuits.
How is troubleshooting organised?
Two ways, deliberately. Troubleshooting by error codes runs from page 327 to page 400 and works from what the machine reports. Troubleshooting by trouble runs from 401 to 440 and works from what the operator sees when there is no code. The engine has its own diagnosis section at the back, from page 940, with failure diagnosis by engine status and the engine diagnosis code tables.
How big is the manual and can I search it?
It is 1030 pages in English, a searchable and printable PDF. Search the text, print the pages you need for the bench, and keep the rest on a laptop in the workshop.
How quickly can I access this New Holland E485B manual after buying?
Immediate download of the complete 1030-page searchable Repair Manual (94 MB). Access it on any device, from a laptop at your desk to a phone in the field.
Can I print specific sections of this New Holland E485B Repair Manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
