Meet the Komatsu SAA6D114E-2B (JPN) Parts Book for WA400-5—a precise, professional reference for technicians, parts clerks, and maintenance teams who service this wheel loader. Tailored to S/N 26800003-UP, it streamlines parts identification, sourcing, and repairs by delivering accurate diagrams and part numbers in a single, dependable source.

As a digital downloadable PDF manual, this catalog provides comprehensive coverage of the SAA6D114E-2B engine and its associated systems for the WA400-5. Expect clear exploded views, labeled diagrams, and cross-referenced part numbers that map to exact assemblies and components. The document is organized to support quick navigation: each major subsystem—engine, fuel and air intake, cooling, lubrication, hydraulic and powertrain, electrical, transmission, front and rear axles, and undercarriage—appears with dedicated pages and intuitive groupings. You’ll find detailed component lists, illustrated assembly sequences, and reference tables that connect every part to its identifier, making parts ordering more accurate and inventory management more efficient. The Japanese specification (JPN) variant is preserved where compatibility nuances exist, ensuring you’re looking at the correct catalog for this configuration. Because this is a digital PDF, you can access a portable, searchable resource in the workshop or on the go, enabling faster references when you’re ordering parts, planning maintenance, or diagnosing a failure. This manual is designed to be a reliable, long-term reference for WA400-5 units built around the S/N 26800003-UP range, helping teams reduce misorders and minimize downtime.

What’s inside

• Engine overview and component diagrams for the SAA6D114E-2B (JPN), including fuel system, lubrication, cooling, air intake, and exhaust sections.
• Detailed part-numbered assemblies for the cylinder head, block, pistons, rings, gaskets, bearings, seals, and ancillary engine hardware.
• Fuel system components such as injectors, high-pressure lines, fuel pump, filters, and related fittings with corresponding part numbers.
• Cooling system diagrams covering the radiator, water pump, thermostats, hoses, and fans, with step-by-step reference to replacement parts.
• Electrical and sensing diagrams, wiring harness routes, controllers, relays, connectors, and wiring color codes to simplify electrical troubleshooting and parts replacement.
• Hydraulic and powertrain sections, including pumps, valves, actuators, lines, and transmission components relevant to WA400-5 operation.
• Undercarriage and front/rear axle assemblies where applicable, with exploded views that clarify part relationships and order of disassembly.
• Torque specs, fastener lists, and maintenance intervals where appropriate to ensure proper installation and service planning.
• Serial-number coverage clearly indicated for S/N 26800003-UP, so you confirm part compatibility with your specific machine.
• Index and cross-reference tables to quickly locate part numbers across chapters, saving time during sourcing and repairs.

Benefits

• Faster parts identification minimizes guesswork and reduces the risk of incorrect orders, which translates to lower downtime and less back-and-forth with suppliers.
• Precise cross-references connect part numbers to exact assemblies, so your maintenance planning and stock control become more predictable. This supports efficient inventory management and better budget planning.
• Comprehensive diagrams and exploded views illuminate how systems fit together, aiding technicians during disassembly, replacement, and reassembly procedures on the WA400-5 with S/N 26800003-UP.
• A digital PDF format provides a portable, workshop-friendly reference you can consult on a tablet, laptop, or desktop. The searchability and bookmarks speed up locating the relevant section during diagnoses or part sourcing.
• Consistency across engine, hydraulic, electrical, and driveline sections helps teams standardize maintenance workflows, improving training outcomes for new technicians and onboarding for spare-parts staff.

Who this is for

• Service technicians performing routine maintenance, component replacements, or overhauls on WA400-5 units fitted with the SAA6D114E-2B (JPN) engine.
• Parts departments and procurement teams seeking exact part numbers and compatible variants for orders and stock audits.
• Fleet managers and shop supervisors who aim to reduce downtime by providing precise, quick-reference documentation to their teams.

Delivery & format

This is a digital downloadable PDF manual designed for practical workshop use. The file provides a compact, searchable reference you can print selectively or view electronically, ensuring reliable access to part numbers, diagrams, and assembly information whenever you need it.