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Workshop manual, specs and bolt torques for Komatsu 4D105-3 engines

 
Komatsu 4D105 engine oblong view
Komatsu 4D105-3 engine - click for specs and manuals

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Komatsu 4D105-3 Essential Diesel Engine Bolt Tightening Torques

 
Komatsu 4D105-3
Main Bearing Bolts 

step 1 = 90 Nm
step 2 = 137 Nm
step 3 = loosen all
step 4 = 90 Nm
step 5 = 137 Nm
step 6 = 196 Nm

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Komatsu 4D105-3
Connecting Rod Bolts

step 1 = 60 Nm
step 2 = 110 Nm
step 3 = loosen all
step 4 = 60 Nm
step 5 = 110 Nm

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Komatsu 4D105-3
Cylinder Head Bolts

step 1 = 200 Nm
step 2 = 320 Nm
step 3 = 400 Nm

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Komatsu 4D105D head torque sequence
Komatsu 4D105-3 head torque sequence, Click to expand

Komatsu 4D105-3 Diesel Engine workshop repair Manuals

 
Komatsu 4D105D workshop manual p1
Komatsu 4D105D workshop manual, 252 pages, Click to download

Komatsu 4D105-3 Diesel Engine Specs

 
Komatsu 4D105-3
Arrangement

4 cylinder 
4-stroke cycle engine 
turbocharged

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Komatsu 4D105-3
Displacement, bore, stroke 
and compression ratio

Displacement
4.33 liter

Bore
105 mm

Stroke
125 mm

Compression ratio
4D 105 = 17.0 
S4D105 = 15.5

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Komatsu 4D105-3
Power 

50-90 hp, 37-67 kW @ 2400 rpm

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Komatsu 4D105-3
Dimensions and weight

Dimensions
approx
length 986 mm
length 775 mm
height 1375 mm (with silencer)

Weight approx
540 kg

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Diesel engine Manuals, Specs, Bolt torques
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More Komatsu Engine Specs, Bolt torques and manuals

Komatsu diesel engine manuals, bolt torques, specs
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