Description

Komatsu WA380-7 2013 Workshop Manual

If you’re working on a Komatsu WA380-7 wheel loader and you don’t have the factory manual, you’re guessing. Guessing on torque specs costs you time and parts. Guessing on wiring diagrams costs you a fire. I’ve seen it. This 2480-page Workshop Manual from Komatsu puts the OEM specs in your hands. No aftermarket summary. No condensed cheat sheet. The real deal.

Every section in this manual comes from Komatsu’s own engineering team. The foreword alone covers safety notices, hoisting instructions, handling electric and hydraulic equipment, and standard tightening torque tables. Want to know what torque to use on a split flange bolt? That table is right there. The manual is built for the WA380-7 serial numbers A64001 and up, with the 6D107E-2 engine. That means every spec matches your machine.

Torque Specs and Fluid Capacities

Standard tightening torque tables start on page 20-1. They cover bolts, nuts, hose nuts, split flange bolts, flared nuts, O-ring boss joints, face seal joints, and specific values for the 102, 107, and 114 engine series. You also get torque values for eye joints and taper screws. If you’re rebuilding a hydraulic line or fastening an engine mount, you don’t guess—you look it up. The manual also includes fuel, coolant, and lubricant specifications from section 01 GENERAL. That’s everything you need to keep the machine running.

Engine and Cooling System Coverage

Section 10 STRUCTURE AND FUNCTION dives into the engine and cooling system. You get diagrams of the KVGT (Variable Geometry Turbo), the EGR system piping, EGR valve and cooler operation, KCCV (Komatsu Closed Crankcase Ventilation) layout, and the KDPF (Komatsu Diesel Particulate Filter). The cooling fan pump and servo valve are explained with function and operation descriptions. If you’re troubleshooting an overheating issue, this section shows you the exact flow path. The hydraulic motor and suction valve details are included.

3 Reasons to Use the OEM Manual Over Aftermarket

First, the wiring diagrams. Aftermarket manuals often redraw schematics and miss wire colors or pin assignments. In this manual, section 90 DIAGRAMS AND DRAWINGS contains the factory originals. The electric wire code in the foreword teaches you to read Komatsu’s own color codes and thickness classifications. Second, the testing and adjusting procedures in section 30 give specific pressure values, flow rates, and adjustment sequences. You don’t get that from a generic book. Third, the disassembly and assembly section (50) has step-by-step instructions with exact part numbers. No guesswork.

Does This Manual Cover the KDPF and EGR Systems?

Yes. Section 10 includes the KDPF function, types of regeneration, and the EGR system circuit diagram. The EGR cooler and valve operation are explained with cross-section drawings. If you need to regenerate the filter or replace an EGR valve, this manual walks you through the removal and installation. It also covers the CDR valve and KCCV ventilator. Aftermarket sources skip these details. This manual doesn’t.

Testing and Adjusting: The Diagnostic Sequence

Section 30 TESTING AND ADJUSTING starts on page 30-1. It covers everything from engine performance tests to hydraulic pressure checks. You get standard value tables in section 20 for reference. The manual tells you what tool to use, what the spec should be, and what to do if it’s off. Testing and adjusting procedures are written so a technician can follow them in order. No skipping steps. That’s how you avoid comebacks.

Transmission Control Valve: What the Manual Shows

The power train system section includes detailed diagrams of the transmission control valve, forward/reverse clutches, and lockup clutch ECMV. You get oil flow diagrams for each gear: forward 1st through 4th and reverse 1st. The manual explains the function of each ECMV and how the clutch packs engage. If you’re rebuilding a transmission, you need this. The Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual covers smaller models, but this one is specific to the WA380-7.

Understand the Wiring Before You Touch It

Section 90 DIAGRAMS AND DRAWINGS contains complete electrical schematics. The foreword has a section on electric wire code that explains how to read wire codes by thickness, color, and code. If you’re installing a new radio or troubleshooting a no-start, this is the map. For basic theory on Manual Transmission operation, you can find it online, but for Komatsu-specific wiring you need this manual. Another resource: Manual Transmission fundamentals if you’re new to the drivetrain, but that’s background. This manual is the actual service data.

You want to do this right. Get the manual.

Frequently Asked Questions

Is this manual specific to the WA380-7 with serial number A64001 and up?

Yes. It covers WA380-7 wheel loaders with engine 6D107E-2, serial A64001 and up.

Can I use this manual for a different model?

No. It is specific to WA380-7. Different models like the Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual have different specs.

What kind of torque specs are included?

Standard tightening torque tables for bolts, nuts, hose nuts, split flange bolts, flared nuts, O-ring boss joints, face seal joints, and specific tables for the 102, 107, and 114 engine series. All factory-specified. You also get torque values for eye joints and taper screws used on those engine series. If you need to torque a split flange bolt on a hydraulic line, the value is listed in the foreword and repeated in the standard value tables.

Does the manual include wiring diagrams?

Yes. Section 90 DIAGRAMS AND DRAWINGS contains complete electrical schematics. The electric wire code section in the foreword explains how to read the wire codes by thickness, color, and code. This is critical when you’re chasing a short or installing aftermarket lights. You get the actual factory wire color abbreviations and connector pinouts. No guessing. The manual also includes a list of abbreviations used in the circuit diagrams.

If you’re tired of relying on generic information and want to work with factory data, stop wasting time. Access the Factory Manual.