Komatsu WA350-1 Wheel Loader Shop Manual – Complete Service, Repair & Maintenance Guide

Description

Komatsu WA350-1 Wheel Loader Shop Manual

This Komatsu WA350-1 Shop Manual is the complete technical resource for servicing, repairing, and maintaining the WA350-1 wheel loader (serial number 10001 and up) fitted with the S6D110-1 engine. Across 781 pages, it delivers the structure and function explanations, testing and adjusting procedures, disassembly and assembly sequences, and maintenance standards that professional technicians rely on. Every major system on the machine is covered in dedicated chapters, each broken down into its own sections for clarity.

File Details

• Manual Type: Shop Manual
• Brand: Komatsu
• Model: WA350-1 Wheel Loader
• Engine: S6D110-1 (see 110 Series Engine Shop Manual for engine details)
• Serial Number Range: WA350-1 10001 and up
• Language: English
• Page Count: 781
• File Format: PDF

Chapters Covered

• 10 Engine — Structure and Function, Testing and Adjusting, Disassembly and Assembly (valve clearance, compression pressure, fuel injection timing, oil pressure, blow-by, fan belt tension, exhaust gas color, accelerator pedal, fuel cut solenoid)
• 20 Power Train — Structure and Function (torque converter, transmission, transfer, drive shafts, axles, differential, final drive, tire and wheel), Testing and Adjusting (engine stall speed, oil pressures, shift lever), Disassembly and Assembly, Maintenance Standard
• 40 Steering System — Structure and Function (steering valve, relief valve, safety valve, demand spool, steering cylinder, column and gear box, center hinge pin, linkage, emergency steering pump, diverter valve), Testing and Adjusting, Disassembly and Assembly, Maintenance Standard
• 50 Brake and Air System — Structure and Function (air tank, safety valve, brake valve, air governor, two-way valve, brake chamber, slack adjuster, brake, parking brake, spring cylinder, brake caliper), Testing and Adjusting, Disassembly and Assembly, Maintenance Standard
• 60 Work Equipment System — Structure and Function (hydraulic circuit, bucket linkage, bucket positioner, boom kick-out, hydraulic tank, oil filter bypass, breather, pumps, main control valve, relief valve, safety valve, suction valve, hydraulic cylinders), Testing and Adjusting, Disassembly and Assembly, Maintenance Standard
• 80 Electric and Electronic System — Structure and Function (electrical wiring diagram, starting circuit, stop circuit, preheating circuit, combination switch, transmission control, cut-off switches, neutralizer relay, parking brake control, electronic vehicle monitoring system, monitor panel, controller, sensors, proximity switch), Testing and Adjusting, Disassembly and Assembly
• 90 Others — Cab, Air Conditioner (piping, wiring, electric circuit, unit), Gear Pump (general, principle of operation, pressure loaded type, fixed side plate type, SA Series structure, testing and adjusting, disassembly, assembly, maintenance standard)

This shop manual is organized so that each major group of components gets its own chapter, and those chapters are further divided into Structure and Function, Testing and Adjusting, Disassembly and Assembly, and Maintenance Standard sections. The Structure and Function sections explain how each component works and serve as reference material for troubleshooting. The Testing and Adjusting sections give the checks to perform before and after repairs, along with adjustment procedures and troubleshooting charts that correlate problems to their causes. The Disassembly and Assembly sections lay out the correct order for removing, installing, disassembling, and assembling each component, with the precautions to observe at each step. The Maintenance Standard sections provide the judgment criteria for inspecting disassembled parts.

What sets this Komatsu WA350-1 service manual apart is the depth of the testing and adjusting data. Standard value tables and permissible value tables appear throughout, covering everything from engine compression pressure and valve clearance to transmission clutch pressures, brake pedal travel, steering wheel operating force, and hydraulic relief pressures. The power train chapter alone walks through the torque converter, transmission control valve, transfer, drive shafts, differential, and final drive with both inspection criteria and step-by-step rebuild procedures. The electrical system chapter includes the full wiring diagram plus the electronic vehicle monitoring system with its monitor panel logic, sensor operation, and troubleshooting flow charts.

What This Manual Enables You to Do

With this WA350-1 shop manual on hand, you can perform the full range of service and repair tasks on the machine: adjust engine valve clearance and fuel injection timing, measure compression pressure and blow-by, test and adjust the fan belt, diagnose transmission and torque converter faults, rebuild the transmission control valve, service the steering valve and steering cylinder, repair the brake valve, brake chamber, slack adjuster, and parking brake system, overhaul the main control valve and hydraulic cylinders, troubleshoot the electrical starting, charging, and preheating circuits, and work through the electronic vehicle monitoring system with confidence. The maintenance standard tables give you the exact wear limits and clearances to judge whether a part can be reused or must be replaced.

Correct procedures and specifications matter on a machine like the WA350-1. The torque values, pressure settings, clearance limits, and adjustment sequences in this manual are what keep the loader working safely and reliably, and they prevent the guesswork that leads to repeat failures. Whether you are running a fleet, operating a repair shop, or maintaining your own machine, having the manufacturer’s procedures and specifications at your fingertips makes every job faster and more accurate.

IMAGES PREVIEW

This Komatsu WA350-1 repair manual is delivered as an instant PDF download. There is no shipping, no waiting for a physical book, and no risk of a lost or damaged copy. You can view it on any device — laptop, tablet, or smartphone — and print the pages you need for the workshop. Keep it on your computer or in the cloud and access it whenever a repair or service job comes up.