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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 D75S-5 Dozer Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D75S-5 Model Variant: Dozer Bulldozer (Dozer Shovel) Production Years Covered: N/A - not specified for this model Serial Number Range: 15001 and up 👋 Introduction Overview Target Audience: Technicians, mechanics, DIY owners Market...
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vendorKomatsuKomatsu D155AX-6 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D155AX-6 Model Variant: Bulldozer Production Years: Not specified in the manual Serial Number Coverage: 80001 and up 👋 Introduction Target Audience Primary Users: Service technicians and DIY owners Key Features Advantage: Complete official...
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vendorKomatsuKomatsu D155ax-5 Dozer Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D155AX-5 Model Variant: Dozer Bulldozer Production Years Covered: Not specified in manual Serial Number Range: S/N 76001 and up 👋 Introduction Market Position Target Audience: Technicians, service shops, and owners of Komatsu D155AX-5...
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vendorKomatsuKomatsu D50A-17 D50P-17 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D50A-17 Model Variant: D50P-17 Production Years: N/A - not specified Serial Numbers: 80001 and up for both models 👋 Introduction Market Position Target Audience: Technicians and DIY owners seeking comprehensive repair guidance Vehicle...
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vendorKomatsuKomatsu D53A-17 D53P-17 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D53A-17, D53P-17 Model Variants: D53A-17 (crawler dozer), D53P-17 (low-ground-pressure dozer) Serial Numbers Covered: 80001 and up for both models Production Years: N/A - not specified in manual; refer to serial number 👋 Introduction...
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vendorKomatsuKomatsu D63E-12 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D63E-12 Variant: Bulldozer Production years: 2001 and up 👋 Introduction Market position Target audience: Technicians and DIY owners maintaining Komatsu D63E-12 bulldozers Competitive advantage: Comprehensive factory service information in a convenient digital format...
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vendorKomatsuKomatsu D475A-5E0 D475asd-5e0 Service Repair Workshop ManualKomatsu D475A-5E0 D475ASD-5E0 Bulldozer Workshop Service Repair Manual Download MACHINE MODEL SERIAL Number : Komatsu D475A-5e0 - 30001 and up Komatsu D475ASD-5e0 - 30001 and up This is the COMPLETE official full factory service r......
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vendorKomatsuKomatsu D475A-5E0 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D475A-5E0 Model Variant: D475A-5E0 Bulldozer Production Years Covered: N/A - not specified for this model 👋 Introduction Market Position Target Audience: Service technicians, workshop owners, and DIY enthusiasts who require comprehensive factory repair...
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vendorKomatsuKomatsu D475ASD-5E0 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D475ASD-5E0 Model Variant: D475ASD-5E0 (Standard and Super Dozer) Production Years: N/A - not specified for this model 👋 Introduction Market Position Target Audience: Heavy equipment owners, operators, and maintenance technicians Competitive Advantage: Comprehensive...
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vendorKomatsuKomatsu D80A-18 D80E-18 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D80A-18 and D80E-18 Bulldozer Model Variants: D80A-18 (standard) and D80E-18 (with power angle tilt blade) Production Years Covered: N/A - serial numbers 25001 and up 👋 Introduction Market Position Target Audience: Technicians, mechanics,...
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vendorKomatsuKomatsu D80P-18 D85P-18 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D80P-18 / D85P-18 Model Variants: D80P-18, D85P-18 Production Years: 2001 and up 👋 Introduction Market Position Target Audience: Technicians and DIY owners requiring comprehensive repair and service information for Komatsu bulldozers. Competitive Analysis...
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vendorKomatsuKomatsu D85A-18 D85E-18 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D85A-18 and D85E-18 Model Variant: D85A-18 (crawler bulldozer) and D85E-18 (crawler bulldozer) Production Years Covered: N/A - not specified in the manual 👋 Introduction Market Position Target Audience: Technicians, mechanics, and owners of...
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vendorKomatsuKomatsu D41E-6 Dozer Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D41E-6 Dozer Bulldozer Model Variant: D41E-6 Production Years: N/A - not specified for this model Serial Numbers: B20001-B40000; B40001 and up; 5... (see manual) 👋 Introduction Overview Target Audience: Technicians, mechanics, and DIY...
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vendorKomatsuKomatsu D41E-6 D41P-6 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D41E-6 / D41P-6 Model Variant: D41E-6 (standard) and D41P-6 (low ground pressure) Production Years: Not specified in the manual; serial numbers B20001-B40000 indicate a specific production range. 👋 Introduction Target Audience Primary Users:...
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vendorKomatsuKomatsu D41P-6 Bulldozer Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: D41P-6 Model Variant: Bulldozer (Dozer) Production Years: Not specified in manual; serial numbers B20001 and up 👋 Introduction Market Position Target Audience: Technicians, DIY owners, and equipment maintenance personnel Competitive Advantage Advantage: Comprehensive...
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