Main Bearing bolts 4D102E-1 Between Engine Nos: 26200282 - 26224124 S4D102E-1 Between Engine Nos: 26200163 - 26221675 Step1 = 60 Nm Step2 = 90 Nm Step3 = 178 Nm
Main Bearing bolts From 4D102E-1 Engine No: 26224125 up From S4D102E-1 Engine No: 26221676 up From SAA4D102E-2 up Step1 = 60 Nm Step2 = 90 Nm Step3 = +90 degrees
Connecting Rod Bolts Step1 = 30 Nm Step2 = 60 Nm Step3 = Tighten 60 Cylinder head Bolts Step1 = tighten all 90 Nm Step2 = check all Step3 = six long bolts only to 120 Nm Step4 = tighten all bolts further 90° Step = 5 check all bolts at 136 Nm (if bolt(s) found loose at 136 Nm redo those only from step1)
Komatsu 102 series Displacement 4D-102 - 3.9 liter, 238 CID Bore - 4.02", 102 mm Stroke - 4.72", 120 mm
Arrangement 4D-102 4 cylinder in line turbo engine
Power 4D-102 - 97-112 kW, 130-150 hp @ 2500 rpm
Torque 4D-102 - 207-221 lb.ft, 280-300 Nm @ 1500 rpm
Dimensions: 4D-102 approx: length = 790 mm, 31 in width = 711 mm, 28 in height = 894 mm, 35 in
Weight: 4D-102 approx: 390 Kg, 860 lb
Compression ratio: 16.5:1
Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque. Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.
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Page Revision #11.3RsC 10-17