C13, C15, and C18 Tier 4 Final Engines Cylinder Head Caterpillar


Cylinder Head
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Illustration 1g02557638
Typical example
Top view of cylinder head

Table 1
Specification for 331-2478 Cylinder Head Gp and 302-2202 Cylinder Head Gp 
Item  Qty  Part  Specification Description 
26  242-1811 Bolt  Before assembly, lubricate the threads of the bolts and both sides of the washers with 4C-5593 Thread Lubricant.
Use the following procedure to tighten the bolts:

1. Torque bolt 1 through bolt 26 in a numerical sequence to 170 ± 10 N·m (125 ± 7 lb ft) as shown in Illustration 1.
2. Torque again bolt 1 through bolt 26 in a numerical sequence to 170 ± 10 N·m (125 ± 7 lb ft) as shown in Illustration 1.
3. Turn bolt 1 through bolt 26 in a numerical sequence to an extra 120 ± 5 degrees as shown in Illustration 1.
4. Loosen bolt 1 through bolt 26 to 0 N.m (0 lb ft).
5. Torque bolt 1 through bolt 26 in a numerical sequence to 170 ± 10 N·m (125 ± 7 lb ft) as shown in Illustration 1.
6. Torque again bolt 1 through bolt 26 in a numerical sequence to 170 ± 10 N·m (125 ± 7 lb ft) as shown in Illustration 1.
7. Turn bolt 1 through bolt 26 in a numerical sequence to an extra 120 ± 5 degrees as shown in Illustration 1.
8. Torque bolt 27 through 34 in a numerical sequence to 55 ± 10 N·m (41 ± 7 lb ft) as shown in Illustration 1. 
210-4460 Bolt 
Top gasket face of cylinder block, cylinder liners, and bottom gasket face of cylinder head must be free of oil, fuel, water, and other contaminants before assembly. 


Illustration 2g02558076
Top view of cylinder head


Illustration 3g02558157

Table 2
Item  Qty  Part  Specification Description 
35  3B-0623 Cup Plug  Installation depth (M) is 1.5 ± 0.5 mm (0.06 ± 0.02 inch)
Installation depth (N) is 3.0 ± 1.0 mm (0.12 ± 0.04 inch).
Apply Loctite 11358 to the bores for the cup plugs prior to the installation. 

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