C9.3 Tier 4 Final Engines Cylinder Head Caterpillar


Cylinder Head
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Illustration 1g03330706
Bolt tightening sequence

Note: Examine bolts (1) for wear or for damage. Refer to Reuse And Salvage Guidelines, SEBF8301, "Inspection and Reuse of Critical Fasteners Used in All Engines". Replace with new bolts (1), if necessary.

Table 1
Specification for 499-5662 Cylinder Head Gp 
Item  Qty  Part  Specification Description 
26  290-6884 Cylinder Head Fastener Gp  Use the following procedure in order to tighten the cylinder head bolts:

Refer to the Illustration 1 for cylinder head bolt tightening sequence.
Lightly lubricate the threads of the bolts with clean engine oil before assembly.
1. Tighten bolt 1 through bolt 26 in a numerical sequence to 160 ± 15 N·m (118 ± 11 lb ft).
2. Again, tighten bolt 1 through bolt 26 in a numerical sequence to 160 ± 15 N·m (118 ± 11 lb ft).
3. Place a mark on bolt 1 through bolt 26. Tighten bolt 1 through bolt 26 in a numerical sequence to an angle of 90 degrees (1/4 turn).
4. Loosen bolt 1 through bolt 26 until the washers are loose under the bolt heads.
5. Tighten bolt 1 through bolt 26 in a numerical sequence to 160 ± 15 N·m (118 ± 11 lb ft).
6. Again, tighten bolt 1 through bolt 26 in a numerical sequence to 160 ± 15 N·m (118 ± 11 lb ft).
7. Place a mark on bolt 1 through bolt 26. Tighten bolt 1 through bolt 26 in a numerical sequence to an angle of 90 degrees (1/4 turn).
8. Tighten bolt 27 through bolt 32 in a numerical sequence to 28 ± 7 N·m (21 ± 5 lb ft)
9X-6000 Bolt 
Height of the new cylinder head is 163.00 ± 0.15 mm (6.417 ± 0.006 inch)


Illustration 2g03330707

Table 2
Item  Qty  Part  Specification Description 
8M-5860 Cup Plug  Before installation, apply Loctite 540 to the bores for the cup plugs. 
3B-0623 Cup Plug  Before installation, apply Loctite 540 to the bores for the cup plugs. 
8M-5860 Cup Plug  Before installation, apply Loctite 540 to the bores for the cup plugs. 
8M-5860 Cup Plug  Before installation, apply Loctite 540 to the bores for the cup plugs. 
310-7258 O-Ring Seal  Before assembly, apply clean engine oil to the bores. 
310-7259 O-Ring Seal  Before assembly, apply clean engine oil to the bores. 
325-6575 Injector Sleeve  Before assembly, apply green Loctite 620 on the outside surface of the injector sleeve to a distance (H). 
Installation depth for cup plug (3) is 1.25 ± 0.25 mm (0.049 ± 0.010 inch)
Installation depth for cup plug (4) is 3.75 ± 0.50 mm (0.148 ± 0.020 inch)
Installation depth for cup plug (5) is 1.00 ± 0.50 mm (0.039 ± 0.020 inch)

Information System:

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