C2.4 Tier 4 Final Engines for Caterpillar Built Machines Engine Design Caterpillar


Engine Design
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C2.4 Tier 4 Final Engines for Caterpillar Built Machines [M0067750]
ENGINE ARRANGEMENT
ENGINE AR
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Engine Design
1.1. C2.4 Engines
2.1. Tightening Torques of Screws, Bolts, and Nuts for General Use

C2.4 Engines

Bore ... 87 mm (3.4 inch)

Stroke ... 102.4 mm (4.03 inch)

Cylinder arrangement ... In-line

Type of combustion ... Direct injection

Number of cylinders ... 4

Valves per cylinder ... 4

Valve lash

Inlet valve ... 0.2 mm (0.0078 inch)
Exhaust valve ... 0.2 mm (0.0078 inch)

Firing order ... 1, 3, 4, 2

When the crankshaft is viewed from the front of the engine, the crankshaft rotates in the following direction. ... Clockwise

When the camshaft is viewed from the front of the engine, the camshaft rotates in the following direction. ... Clockwise

The 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 to 11.2  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

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