Komatsu WA250-5H / WA250PT-5H Shop Manual (SN 50051+) – 841 Pages | Pro Service File

Technical reference for Komatsu WA250-5H and WA250PT-5H wheel loaders. Documents system operations and components. PN VEBM230102.

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Document Details

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Document Number / Seller:
25582 / Brian Allen
File Size:
36.30 MB
File Type:
PDF
Language:
English
Pages:
849
Printable:
Yes
Category:
Wheel Loader
Last updated / verified
Jan 7, 2026

Models Covered & Key Technical Specifications

Komatsu WA250-5H / WA250PT-5H (SN 50051+) – 841 Pages | Pro Service File

Technical reference for Komatsu WA250-5H and WA250PT-5H wheel loaders. Documents system operations and components. PN VEBM230102.

  • Verified Engineering Data: 4,950 mm establishes the minimum turning radius for the center of the outside wheel Geometry.
  • Key Weight Data: 10,950 kg yields the standard operating weight for the WA250-5H configuration Framework.
  • Prescribed Chassis Specs: The front axle is fixed to the frame with tension bolts, ensuring structural integrity Logic.
  • Nominal Specifications: The engine model is KOMATSU SAA6D102E-2-A, a 4-cycle diesel engine Configuration.
  • Design Cooling System: The radiator features a core type of AL WAVE-4, with a 3.5/2 mm fin pitch Specification.
  • Design Hydraulic Components: The HST pump has a theoretical capacity ranging from 0 – 90 cc/rev Parameters.

Professional Workshop Service Manual & Technical Specifications

Komatsu WA250-5H Wheel Loader Shop Manual (SN 50051+) – 841 Pages | Pro Service File Engine-Compendium

System-Identifier: Komatsu WA250-5H / WA250PT-5H // Engineering-Metrics: 2003-Ongoing / 849 Pages // Product-Line: Wheel Loader / Shop Manual

Metric Rating Calibration-Data
Operating Weight 10,950 kg 12,450 kg
Rated Load 3,680 kg 3,540 kg
Bucket Capacity 2.1 m³ 2.0 m³
Engine Model KOMATSU SAA6D102E-2-A KOMATSU SAA6D102E-2-A
Flywheel Horsepower 101 kW {135 HP} / 2,000 rpm 101 kW {135 HP} / 2,000 rpm
Overall Length 6,905 mm 7,575 mm
Overall Height 3,200 mm 3,200 mm
Min. Ground Clearance 465 mm 465 mm
Digging Depth (10° dump) 245 mm 305 / 385 mm

Integrated service sections encompass:

  • GENERAL: -- General assembly drawings -- Specifications -- Weight table -- List of lubricant and coolant
  • STRUCTURE, FUNCTION AND MAINTENANCE STANDARD: -- Engine mount and transfer mount -- Damper -- Cooling system
  • POWER TRAIN: -- Power train -- Power train system diagram -- Drive shaft (propeller shaft)
  • HYDRAULIC SYSTEM: -- HST hydraulic piping diagram -- HST pump -- High-pressure relief valve
  • STEERING SYSTEM: -- Steering piping -- Steering column

This manual documents the complete hydraulic system, including HST, steering, work equipment, brake, cooling fan, and transfer lubricating circuits. It details the operation of lift arms, buckets, and attachments, with specific sections dedicated to component specifications and maintenance procedures. The manual provides comprehensive diagrams and information on the power train, steering, and hydraulic systems. Component torque specifications are included for proper alignment retention, ensuring optimal system performance and longevity.

FAQ

What are the **proper** clearance measurements for the drive shaft and bearings? keyboard_arrow_down

0.045 – 0.149 mm is the standard clearance for the upper hinge pin and rear frame, with a limit of 1.0 mm.

Specify the **standard** torque specifications for the lift arm retainer mounting bolt. keyboard_arrow_down

59 – 74 Nm {6.0 – 7.5 kgm} is the final value for tightening the upper hinge retainer mounting bolt.

What is the **necessary** safety precautions when working with the hydraulic system? keyboard_arrow_down

Always ensure hydraulic system components are properly bled and depressurized before maintenance to prevent injury.

Calculate the **recommended** lubrication requirements for the engine. keyboard_arrow_down

20 L {19.5} is the engine oil capacity, with SAE 10W viscosity recommended for 0° up to 40° C operation.

What values **calibrated** testing parameters apply to the HST pump? keyboard_arrow_down

The HST pump has a set pressure for the low-pressure relief valve of 2.45 {25} MPa {kg/cm²}.

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Reviews (3)

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The troubleshooting charts were a lifesaver! I received my download link promptly, and the support team was very helpful with my questions. Worth every penny!
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This shop manual is incredibly detailed and made my repair process so much easier. The step-by-step instructions are clear and easy to follow. Highly recommend!
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Rated 5 out of 5 stars