VALVE 1M1623 - Caterpillar

C2.6 Engines
Bore ... 87 mm (3.43 inch)Stroke ... 110 mm (4.33 inch)Cylinder arrangement ... In-lineType of combustion ... Direct injectionNumber of cylinders ... 4Valves per cylinder ... 4Firing order ... 1, 3, 4, 2When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction. ... ClockwiseThe front of the engine is opposite the flywheel end of the engine. The left side and the right side of the engine are determined from the flywheel end. Number 1 cylinder is the front cylinder of the engine.C3.3B Engines
Bore ... 94.0 mm (3.70 inch)Stroke ... 120 mm (4.72 inch)Cylinder arrangement ... In-lineType of combustion ... Direct injectionNumber of cylinders ... 4Valves per cylinder ... 4Firing order ... 1, 3, 4, 2When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction. ... ClockwiseThe front of the engine is opposite the flywheel end of the engine. The left side and the right side of the engine are determined from the flywheel end. Number 1 cylinder is the front cylinder of the engine.Tightening Torques of Screws, Bolts, and Nuts for General Use
Note: If the tightening torque is not specified, refer to the table below for the none specified torque values.
Table 1
Indication on top of bolt No-grade or 4T(1) 7T(2)
Indication on top of nut No-grade or 4T(1)
Unit N m kgf m lbf ft N m kgf m lbf ft
M6 7.9 to 9.3 0.80 to 0.95 5.8 to 6.8 9.81 1.00 to 1.15 7.24 to 8.31
M8 18 to 20 1.8 to 2.1 13 to 15 24 to 27 2.4 to 2.8 18 to 20
M10 40 to 45 4.0 to 4.6 29 to 33 49 to 55 5.0 to 5.7 37 to 41
M12 63 to 72 6.4 to 7.4 47 to 53 78 to 90 7.9 to 9.2 58 to 66
(1) 4T is indicated by a "4" present on the bolt head, if no mark is present the fastener is no-grade
(2) 7T is indicated by a "7" present on the bolt head