Part of the New Holland Repair Manuals.
A mini excavator that crawls straight on gravel but drags one track on the ramp usually has a travel motor problem, and pulling that motor without the bolt torques and the reassembly sequence turns a morning repair into a parked machine and an idle crew. This service manual is where those numbers live: 415 pages for the New Holland EC15, EC25, EC35 and EC45 crawler excavators, covering machines built around the Mitsubishi L3E, S4L, S4L-2 and S4Q2 engines.
The book is organized by system. Electrical System walks through the circuits, relays and diode block, and removal and installation of components. Hydraulic System carries troubleshooting charts and valve bank service. Operator's Platform covers the ROPS/FOPS unit, cab and heater, and Traction/Undercarriage handles the dozer blade, its cylinder and the rubber tracks.
It is a searchable PDF you download and keep. Print the page you need and let it get dirty on the bench; the file stays clean.
What's Inside This New Holland EC15, EC25, EC35, EC45 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information and Machine Specifications | 3-28 | Model and Engine Horsepower Table, Machine Specifications, Precautionary Statements, Serial Number Locations, Machine Transport and Crane Lifting |
| Electrical System | 29-156 | Electrical Circuits, Removal and Installation of Electrical Components, Relays and Diode Block |
| Hydraulic System | 157-302 | Troubleshooting Charts, Removal and Installation, Valve Banks |
| Operator's Platform | 303-374 | ROPS/FOPS Unit, Cab, Heater |
| Traction/Undercarriage | 375-415 | Dozer Blade Cylinder, Dozer Blade, Rubber Track |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Torque for bolts (2) attaching slew motor to upper carriage | 212 lb-ft (290 Nm) | p. 247 |
| Alternator Output | 40 amp | p. 38 |
| Battery Rating | 625 amps @ 0° F | p. 38 |
| EC15 | ||
| EC15 Engine Horsepower | 17.8 hp | p. 7 |
| EC15 Travel Motor Bolt Torque | 49 lb-ft | p. 405 |
| EC25 | ||
| EC25 Engine Horsepower | 27.5 hp | p. 7 |
| EC35 | ||
| EC35 Engine Horsepower | 35.5 hp | p. 7 |
| EC45 | ||
| EC45 Engine Horsepower | 46.4 hp | p. 7 |
| EC45 Crane Lifting Distance (b) | 215 mm | p. 24 |
| EC45 Travel Motor Bolt Torque | 139 lb-ft | p. 409 |
| EC25/EC35 | ||
| EC25/EC35 Crane Lifting Distance (a) | 1300 mm | p. 24 |
| EC25/EC35 Travel Motor Bolt Torque | 78 lb-ft | p. 407 |
New Holland EC15, EC25, EC35, EC45 Common Problems This Manual Covers
Weak or One-Sided Travel
When the machine pulls to one side or loses drive on one track, the travel motor is the usual suspect. The Traction/Undercarriage section covers removal and installation, including the mounting bolt torques for each model: 49 lb-ft on the EC15, 78 lb-ft on the EC25 and EC35, 139 lb-ft on the EC45.
Manual Section: Traction/Undercarriage p. 375Thrown or Worn Rubber Track
Rubber tracks on mini excavators walk off the rollers when tension or the undercarriage is out of spec, and worn tracks chunk out fast on demolition sites. The manual's rubber track procedures in the Traction/Undercarriage section cover replacement so you are not guessing at the job with a 20-ton jack.
Manual Section: Traction/Undercarriage p. 375No Crank or Dead Battery
A machine that will not crank after sitting is often a relay, a diode block fault, or a charging system that has quietly stopped keeping up with the 625 amp battery. The Electrical System section maps the circuits and covers removal and installation of the electrical components, including the relays and diode block.
Manual Section: Electrical System p. 29Slow or Weak Boom and Bucket
When the boom hesitates under load or the bucket loses breakout force, the fault can sit anywhere from the pilot circuit to a valve bank. The Hydraulic System section leads with troubleshooting charts, so you chase the symptom to a cause before you open a single fitting.
Manual Section: Hydraulic System p. 157Loose or Noisy Swing
Play or clunking in the swing points to the slew motor and its mounting hardware. The Hydraulic System section covers the removal and installation work, including torquing the slew motor mounting bolts to 212 lb-ft (290 Nm) on reassembly.
Manual Section: Hydraulic System p. 157Dozer Blade Drifts Down
A blade that will not hold grade means the dozer blade cylinder is bypassing or a line is leaking. The Traction/Undercarriage section covers the dozer blade and its cylinder, so you can pull, reseal and refit it instead of living with a blade that sinks mid-pass.
Manual Section: Traction/Undercarriage p. 375Cab Heater Blowing Cold
A dead heater makes a winter cab miserable and fogs the glass. The Operator's Platform section covers the heater along with the cab and ROPS/FOPS unit, so tearing into the trim to reach it follows a documented procedure rather than guesswork.
Manual Section: Operator's Platform p. 303Frequently Asked Questions
Which machines and engines does this manual cover?
It covers the New Holland EC15, EC25, EC35 and EC45 crawler excavators, which use the Mitsubishi L3E, S4L, S4L-2 and S4Q2 engines. Rated horsepower runs from 17.8 hp on the EC15 to 46.4 hp on the EC45. One manual serves all four models. p. 7
Does it include travel motor bolt torques?
Yes. The Traction/Undercarriage section gives the mounting bolt torques by model: 49 lb-ft (67 Nm) for the EC15, 78 lb-ft (107 Nm) for the EC25 and EC35, and 139 lb-ft (190 Nm) for the EC45. p. 375
Can I troubleshoot electrical faults with this manual?
The Electrical System section covers the electrical circuits, removal and installation of components, and the relays and diode block. It also gives charging system figures: a 40 amp alternator and a battery rated 625 amps at 0 degrees F. p. 29
How does it handle hydraulic problems?
The Hydraulic System section opens with troubleshooting charts that walk from symptom to cause, then covers removal and installation of components and the valve banks. That is where you go for weak, slow or erratic boom, arm and bucket functions. p. 157
What format is this New Holland EC15–EC45 Series manual in?
Immediate download of the complete 415-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Does this New Holland EC15–EC45 Series manual allow printing?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find wiring schematics in this New Holland EC15–EC45 Series manual?
Yes. Complete electrical schematics are included, with wire colors, connector pinouts, and circuit descriptions for each system. See page 139 for an example.
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