Komatsu 4D105-3 Diesel Engine specifications and manuals

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

Komatsu 4D105-3 Diesel Engine workshop repair Manuals

Komatsu 4D105-3 Essential Diesel Engine Bolt Tightening Torques

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

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

Cylinder head Bolts
step 1 = 200 Nm
step 2 = 320 Nm
step 3 = 400 Nm

Komatsu 4D105-3 Diesel Engine Specs

Arrangement
4 cylinder 
4-stroke cycle engine 
turbocharged

Displacement
4.33 liter

Bore
105 mm

Stroke
125 mm

Compression ratio:
4D 105 = 17.0 
S4D105 = 15.5

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

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

Weight approx:
540 kg




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Phone: +27 72 754 4660
email: steve@barringtondieselclub.co.za
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