3516B and 3516B High Displacement Engines for 994D and 994F Wheel Loaders Caterpillar

Cylinder Head

Usage:

994D 3TZ

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Illustration 1	g03322736

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Table 1
Specification for 350-4386 Cylinder Head Gp
Item	Qty	Part	Specification Description
1	2	130-2607 Valve Seat Insert	During installation, shrunk the valve seat insert and ress the insert into the cylinder heads counterbore.
2	2	130-2608 Valve Seat Insert	During installation, shrunk the valve seat insert and ress the insert into the cylinder heads counterbore.
3	5	3B-0645 Cup Plug	Before installation, apply Loctite 11358 to the bores for the cup plugs.
4	1	3B-0623 Cup Plug	Before installation, apply Loctite 11358 to the bores for the cup plugs.
5	2	3B-0623 Cup Plug	Before installation, apply Loctite 11358 to the bores for the cup plugs. Installation depth (D) for cup plug is 1.0 ± 0.5 mm (0.04 ± 0.02 inch).
6	2	3B-0623 Cup Plug	Before installation, apply Loctite 11358 to the bores for the cup plugs. Installation depth (E) for cup plug is 9.0 ± 0.5 mm (0.35 ± 0.02 inch).

Bolt Tightening Procedure

The cylinder head bolt tightening procedure depends on which cylinder head gasket is used. Refer to one of the following bolt tightening procedures based on your cylinder head gasket.

Bolt Tightening with the 362-8264 Cylinder Head Gasket

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Illustration 2	g03322738

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Table 2
Item	Qty	Part	Specification Description
7	1	5B-7890 Pipe Plug	Before assembly, lubricate the threads with Loctite C5A Copper Anti-Seize.
8	6	131-0420 Cylinder Head Fastener Gp	Use the following procedure in order to tighten the bolts for the cylinder head: Refer to Illustration 2 for cylinder head bolt tightening sequence. 1. Before assembly, apply clean engine oil to the threads of the bolts. 2. Tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 30 ± 5 N·m (22 ± 4 lb ft). 3. Again, tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 100 ± 15 N·m (74 ± 11 lb ft). 4. Again, tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 450 ± 15 N·m (332 ± 11 lb ft). 5. Loosen bolt 1 through bolt 8 in the numerical sequence for an angle of 90 ± 5 degrees. 6. Again, tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 490 ± 15 N·m (361 ± 11 lb ft). 7. Tighten two bolts (10) only after bolt 1 through bolt 8 have been given the final torque. 8. Tighten two bolts (10) to 55 ± 10 N·m (41 ± 7 lb ft).
9	2	131-0421 Cylinder Head Fastener Gp
10	2	5B-0213 Bolt

Bolt Tightening with the 110-6991 Cylinder Head Gasket

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Illustration 3	g03322739

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Table 3
Item	Qty	Part	Specification Description
7	1	5B-7890 Pipe Plug	Before assembly, lubricate the threads of the pipe plug with Loctite C5A Copper Anti-Seize.
8	6	131-0420 Cylinder Head Fastener Gp	Use the following procedure in order to tighten the bolts for the cylinder head: Refer to Illustration 3 for cylinder head bolt tightening sequence. 1. Before assembly, apply clean engine oil to the threads of the bolts. 2. Tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 30 ± 5 N·m (22 ± 4 lb ft). 3. Again, tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 200 ± 15 N·m (148 ± 11 lb ft). 4. Again, tighten bolt 1 through bolt 8 in the numerical sequence to a torque of 200 ± 15 N·m (148 ± 11 lb ft). 5. Turn bolt 1 through bolt 8 in the numerical sequence to an angle of 180 ± 5 degrees. 6. Tighten two bolts (10) only after bolt 1 through bolt 8 have been given the final torque. 7. Tighten two bolts (10) to 55 ± 10 N·m (41 ± 7 lb ft).
9	2	131-0421 Cylinder Head Fastener Gp
10	2	5B-0213 Bolt