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Factory workshop manuals
Komatsu Repair Manuals
- Instant PDF download
- OEM repair procedures
- Wiring diagrams & torque specs
Komatsu, Japan's construction and mining equipment giant founded in 1921, designs and builds many of the diesel engines used in its own machines. This page offers workshop, service and repair manuals for Komatsu engines fitted to excavators, bulldozers, wheel loaders and haul trucks.
Komatsu Ltd. was founded in 1921 in the city of Komatsu, Ishikawa Prefecture, Japan, where the company's name and main plants still originate. Growing from mining machinery into construction equipment, Komatsu became one of the world's two largest makers of earthmoving machines, with a reputation for quality manufacturing and in-house component production.
Komatsu is known for heavy-duty engineering across bulldozers, hydraulic excavators, wheel loaders and rigid dump trucks, and for building its own diesel engines rather than relying entirely on outside suppliers. Its engines are respected for durability in construction, mining, quarrying and forestry, where machines run long hours in severe conditions. Beyond machine engines, Komatsu power units are also applied in generators and industrial installations, extending the value of its service documentation well beyond the yellow iron on construction sites.
The manuals on this page cover Komatsu engines and equipment in depth, including mechanical overhaul, fuel injection and emission control systems, cooling and lubrication, hydraulic circuits, electrical systems with wiring diagrams, torque specifications and diagnostic procedures. Scheduled maintenance programs help keep machines available and safe on site. Engine series such as the 107 and 108 families documented in the listings show the continuity of design that lets older machines remain supportable for decades.
These factory documents are intended for equipment owners, contractor maintenance teams, independent heavy-equipment technicians and engine rebuilders. With correct specifications at hand, Komatsu machines can be serviced and repaired to manufacturer standards and kept productive for decades.
Komatsu Models
208 models-
Komatsu Skid Steer Loaders
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Komatsu SK 1026 Models
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Komatsu Wheel Loaders
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Komatsu 108 Series
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Komatsu 4D106
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Komatsu S4D106
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Komatsu 108
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Komatsu PC400 7
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Komatsu 4D98E
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Komatsu 108 2
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Komatsu 102E Series
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Komatsu 3D82AE Series
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Komatsu 3D84E Series
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Komatsu 3D88E Series
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Komatsu 4D106 Series
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Komatsu 4D88E Series
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Komatsu 4D98E Series
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Komatsu S4D106 Series
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Komatsu S4D84E Series
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Komatsu S4D98E Series
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Komatsu 4D98
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Komatsu 3D82AE
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Komatsu 3D84E
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Komatsu 3D88E
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Komatsu 4D88E
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Komatsu S4D84E
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Komatsu 110 Series
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Komatsu SAA6D125E-5
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Komatsu DCA Series
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Komatsu Denyo
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Komatsu Generators
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Komatsu Home and Garden
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Komatsu Power Equipment
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Komatsu Material Handling
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Komatsu 95 3
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Komatsu Yanmar
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Komatsu WA 150 Models
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Komatsu SA6D125E-3
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Komatsu SAA6D125E-3
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Komatsu 102-1
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Komatsu 102-2
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Komatsu SER.
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Komatsu 102 Series
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Komatsu 125E-5
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Komatsu 110
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Komatsu 12V140E-3 Engine
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Komatsu 4D94E
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Komatsu SA12V140Z-1
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Komatsu 170 3
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Komatsu 95E-5
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Komatsu SK 1020 Models
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Komatsu S6D140-2
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Komatsu SA6D140-2
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Komatsu 108-2 Series
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Komatsu PC Models
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Komatsu 114
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Komatsu 102
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Komatsu 105
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Komatsu 95
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Komatsu 125
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Komatsu 102 2
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Komatsu 102 E
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Komatsu 102 1
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Komatsu 102 E 1
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Komatsu 108 1
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Komatsu 114 3
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Komatsu 114 E 1
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Komatsu 125 2
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Komatsu 125 3
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Komatsu 14 3
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Komatsu 140 2
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Komatsu 140 3
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Komatsu 140 E 5
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Komatsu 155 4
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Komatsu 170 2
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Komatsu 170 E 5
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Komatsu 3 D 4 D S 4 D
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Komatsu 4 FA 1
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Komatsu 4 FE 1
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Komatsu 60125 2
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Komatsu 72 2
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Komatsu 74 E
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Komatsu 75 2
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Komatsu 78 1
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Komatsu 84 2
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Komatsu 94 98
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Komatsu 95 1
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Komatsu 95 2
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Komatsu 95 E 5
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Komatsu 98 E
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Komatsu 98 E 5
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Komatsu 98 E 6
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Komatsu H 20
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Komatsu KDC 410
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Komatsu KDC 610
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Other Komatsu
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Komatsu WB Models
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Komatsu KDC 614
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Komatsu Series Manuals
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Komatsu N 855
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Komatsu 150 A
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Komatsu 150 FA
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CD Series
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D Series
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TD Series
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Komatsu 210M
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Komatsu 330M
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Komatsu 530M
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Komatsu 630E
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Komatsu 730E
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Komatsu 830E
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Komatsu 830E 1AC
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Komatsu 830E AC
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Komatsu 860E 1K
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Komatsu 860E 1KT
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Komatsu 930E
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Komatsu 930E 2
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Komatsu 930E 4SE
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Komatsu 960E 1
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Komatsu HA250
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Komatsu HA250 1
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Komatsu HA270
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Komatsu HA270 1
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HD Models
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HM Models
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Other Komatsu
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Other Komatsu
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PC Models
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H Models
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PW Models
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Komatsu 850 B
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Komatsu 675
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Komatsu 830 B
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Komatsu 830 C
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Komatsu 850 C
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Komatsu 870 B
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Other Komatsu
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Komatsu 870 C
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Komatsu GD 555
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Other Komatsu
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Other Komatsu
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Komatsu Series Manuals
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Komatsu SK 815 Models
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WD Series
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Galeo
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Komatsu 20 F
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Komatsu 60 E
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Komatsu W 90 3
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Komatsu WA 100 Models
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Komatsu WA 120 Models
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Komatsu WA 1200 Models
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Komatsu WA 180 Models
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Komatsu WA 200 Models
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Komatsu WA 250 Models
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Komatsu WA 270 Models
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Komatsu WA 30 Models
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Komatsu WA 300 Models
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Komatsu WA 320 Models
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Komatsu WA 350 1
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Komatsu WA 380 Models
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Komatsu WA 430 Models
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Komatsu WA 400 Models
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Komatsu WA 420 Models
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Komatsu WA 450 Models
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Komatsu WA 470 Models
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Komatsu WA 480 Models
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Komatsu WA 50 Models
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Komatsu WA 600 Models
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Komatsu WA 500 Models
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Komatsu WA 65 Models
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Komatsu WA 70 Models
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Komatsu WA 800 Models
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Komatsu WA 80 Models
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Komatsu WA 700 Models
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Komatsu WA 90 Models
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Other Komatsu
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Komatsu WA 900 Models
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BX Series
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AE Series
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AM Series
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CX Series
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FB Series
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FBRJ Models
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Other Komatsu
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Other Komatsu
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FD Series
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960E-1
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SK1020-5
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SK714-5
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D85EX-15
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D65E-12
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FG Series
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D155AX-5
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Komatsu 450FXL 1
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D31EX-21
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PC400-7
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D65EX-15
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D41E-6
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D31E-20
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D575A-2
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SK815-5
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860E-1Kt
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Other Komatsu
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Other Komatsu
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D20A-6
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Bulldozer
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WH Series
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EG Series
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vendorKomatsuKomatsu WA500-3-3H WA 500 WA500 Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA500 Wheel Loader Model Variant: WA500-3 and WA500-3H Production Years: Not specified in manual; serial numbers WA500-3 - 50001 and up, WA500-3H - WA500H20051 and up 👋 Introduction Market Position Target Audience: Technicians...
- Regular price
- $16.99
- Sale price
- $16.99
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vendorKomatsuKomatsu WA500-6 WA 500 WA500 Galeo Wheel Loader Service Repair...🏷️ Basic Information Identification Make: Komatsu Model: WA500-6 Model Variant: Galeo Wheel Loader Production Years Covered: Serial no. WA500-6 - 55001/A92001 and up, years not specified 👋 Introduction Market Position Target Audience: Technicians, DIY owners, and service professionals requiring comprehensive...
- Regular price
- $16.99
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- $16.99
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vendorKomatsuKomatsu WA600-1 WA 600 WA600 Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA600-1 Model Variant: Wheel Loader Production Years: Not specified; serial number WA600-1 - 10001 and up 👋 Introduction Market Position Target Audience: Technicians and DIY owners of Komatsu WA600-1 wheel loaders Purpose: Complete...
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- $16.99
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vendorKomatsuKOMATSU FORKLIFT Loader 6D95L S6D95L-1 DIESEL Engine WORKASHOP Shop Service...🏷️ Basic Information Identification Make: Komatsu Model: 6D95L / S6D95L-1 Diesel Engine Model Variant: 6D95L, S6D95L-1 Production Years: Not specified in manual 👋 Introduction Target Audience Audience: Technicians and DIY owners maintaining Komatsu forklifts, loaders, and other machines powered by...
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- $16.99
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vendorKomatsuKomatsu Forklift Workshop Shop Service Repair Manual FD FG🏷️ Basic Information Identification Make: Komatsu Model: FD/FG series forklifts Model variants: FD10, FG10, FD15, FG15, FD18, FG18, FD20, FG20, FD25, FG25, FD30, FG30, FD35, FG35 Production years covered: Series 10/15/18/20 and 20/25/30/35 (approximate years 1980s-1990s) 👋 Introduction Target Audience...
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vendorKomatsuKOMATSU Operation Maintenance Manual FG FD ModelS🏷️ Basic Information Identification Make: Komatsu Model: FG Series, FD Series Model Variants: FG(D)10-30.11-AW2, FG(D)20H/25H/30H-11, FG20/25/30-11, FG20H/25H/30H-15 Production Years: Covers models produced from the 1980s through the 2000s 👋 Introduction Market Position Target Audience: Technicians, fleet managers, and DIY owners...
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vendorKomatsuKomatsu Service Diesel Engines 102E Series Shop Manual Excavator 102...🏷️ Basic Information Identification Make: Komatsu Model: 102E Series Diesel Engines Model Variants: 4D102E-1, 6D102E-1, S6D102E-1, SA6D102E Production Years Covered: N/A - not specified for this model 👋 Introduction Market Position & Target Audience Target Audience: Technicians, DIY owners, and...
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- $16.99
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vendorKomatsuKOMATSU WA470-5 WA480-5 Wheel Loader Workshop Shop Manual🏷️ Basic Information Identification Make: Komatsu Model: WA470-5, WA480-5 Model Variant: Wheel Loader Production Years Covered: Various; specific serial number ranges indicate production periods 👋 Introduction Market Position Target Audience: Technicians and DIY owners of Komatsu WA470-5 and WA480-5 wheel...
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vendorKomatsuKomatsu WA600 -1 Wheel Loader - Shop - Service Manual...🏷️ Basic Information Identification Make: Komatsu Model: WA600-1 Wheel Loader Model Variant: WA600-1 Production Years: N/A - not specified in the manual 👋 Introduction Market Position Target Audience: Professional service technicians and equipment owners Competitive Advantage: Complete workshop manual with...
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vendorKomatsuKOMATSU WA320-3 Wheel Loader Service Workshop Shop Manual🏷️ Basic Information Identification Make: Komatsu Model: WA320-3 Variant: WA320H20051 and up Production Years: N/A - not specified for this manual 👋 Introduction Market Position Target Audience: Technicians and DIY owners Competitive Advantage: Comprehensive factory workshop manual covering service and...
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vendorKomatsuKOMATSU WA420-3 WA 420 Workshop Shop Manual🏷️ Basic Information Identification Make: Komatsu Model: WA420-3 Vehicle Type: Wheel Loader Serial Number Range: WA420H20051 and up Production Years: N/A - not specified for this model 👋 Introduction Market Position Target Audience: Technicians, workshop owners, and DIY operators of...
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vendorKomatsuKomatsu Service SK1020-5 SK1020-5 Turbo SK1020-5N SK1020-5NA Manual Skid Steer...🏷️ Basic Information Identification Make: Komatsu Model: SK1020-5 Model Variant: SK1020-5, SK1020-5 Turbo, SK1020-5N, SK1020-5NA Production Years Covered: N/A - not specified 👋 Introduction Market Position Target Audience: Technicians and DIY owners of Komatsu skid steer loaders Competitive Analysis Advantage:...
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- $16.99
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- $16.99
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vendorKomatsuKomatsu D38E-1A D38P-1A Tractor Workshop Service Manual🏷️ Basic Information Identification Make: Komatsu Model: D38E-1A, D38P-1A Model Variant: Crawler Tractor Production Years Covered: Not specified in source; likely late 1980s to 1990s 👋 Introduction Market Position Target Audience: Technicians, mechanics, and DIY owners who need comprehensive repair...
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- $17.99
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vendorKomatsuKomatsu WA470-5 WA480-5 Wheel Loader Service Repair Manual🏷️ Basic Information Identification Make: Komatsu Model: WA470-5, WA480-5 Model Variant: Wheel Loader Production Years: Approx. 2003-2008 👋 Introduction Overview Target Audience: Technicians, workshop owners, and DIY enthusiasts maintaining Komatsu wheel loaders Market Position: The WA470-5 and WA480-5 are mid-size...
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vendorKomatsuKomatsu Service WA250-5 WA250L-5 WA250PT-5 WA250PTL-5 Shop Manual Wheel Loader...🏷️ Basic Information Identification Make: Komatsu Model: WA250-5, WA250L-5, WA250PT-5, WA250PTL-5 Model Variant: Standard, Long wheelbase, PT (pipeline/tunneling) and PTL versions Production Years: Serial numbers 70001 and up; exact year not specified 👋 Introduction Market Position Target Audience: Technicians, workshop...
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