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CATERPILLAR C7 Essential Diesel Engine Bolt Tightening Torques


Caution: Bolt Torques and other data, may vary from serial number to serial number, please check the manuals.

CAT C7 Main Bearing capscrews
step 1 = 54 ± 7 Nm, 40 ± 5 lb.ft
step 2 = + 90 degrees

CAT C7 Connecting Rod Bolts
step 1 = 70 ± 5 Nm, 52 ± 4 lb.ft
step 2 = + 120 degrees

CAT C7 Cylinder Head Bolts
Main Cylinder Head Bolts
step 1 = 300 Nm, 220 lb.ft
step 2 = loosen all
step 3 = 130 Nm, 95 lb.ft
step 4 = repeat step 3
step 5 = + 45 degrees

Minor Cylinder head Bolts
55 Nm, 41 lb.ft

CATERPILLAR C7 Diesel Engine Specs


CAT C7 Displacement, bore and stroke

7.2 liter, 442 CID

4.33 in, 110 mm

5.0 in, 127 mm

CAT C7 Arrangement
6 cylinder in-line turbo,

CAT C7 Power
218 hp 168 kW @ 2200 rpm

CAT C7 Torque
761 lb.ft 1028 Nm @ 1350 rpm

CAT C7 Dimensions
length 1089.5 mm, 42.9 in
width 986.7 mm, 38.8 in
height 969.6 mm, 38.2 in

CAT C7 Weight
647 kg
1425 lb

CAT C7 Compression Ratio
mostly at 16.5:1

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Essential bolt torques are:
main bearing cap bolts, connecting rod cap bolts, cylinder head bolts.

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