PISTON ASSEM. 8J2022 - Caterpillar

Illustration 1 g03130536
Typical example
Table 1
Specification for 206-1558 Cylinder Head Gp, 248-5030 Cylinder Head Gp, 378-7413 Cylinder Head Gp, and 378-7416 Cylinder Head Gp
Item Qty Part Specification Description
1 1 5B-7890 Pipe Plug Before assembly, apply Loctite C5A copper anti-seize to the threads.
2 6 131-0420 Cylinder Head Fastener Gp Before assembly, apply engine oil to cylinder head bolt threads.
Use the following procedure in order to tighten the cylinder head bolts. Refer to Illustration1 for the tightening sequence:
1. Tighten bolt (1) through bolt (8) in the numerical sequence to 30 5 N m (22 4 lb ft).
2. Again tighten bolt (1) through bolt (8) in the numerical sequence to 270 35 N m (200 26 lb ft).
3. Again tighten bolt (1) through bolt (8) in the numerical sequence to 450 20 N m (332 15 lb ft).
4. Tighten two bolts (4) only after bolt 1 through bolt 8 have been given the final torque. Tighten two bolts (4) to 55 10 N m (41 7 lb ft).
3 2 131-0421 Cylinder Head Fastener Gp
4 2 5B-0213 Bolt
Illustration 2 g03130499
Table 2
Item Qty Part Specification Description
5 5 3B-0645 Cup Plug Apply high strength or high temperature anaerobic flange sealant to the bores for the cup plugs prior to the installation.
6 3 3B-0623 Cup Plug Apply high strength or high temperature anaerobic flange sealant to the bores for the cup plugs prior to the installation.
Installation depth (F) is 1.0 0.5 mm (0.04 0.02 inch).
7 2 191-6760 Valve Seat Insert During installation, shrunk the valve seat insert with reduced temperature.
8 1 4P-6925 Oil Sleeve During installation, shrunk the oil sleeve with reduced temperature.
Installation depth is 16.5 1.0 mm (0.65 0.04 inch).
9 2 257-9166 Valve Seat Insert During installation, shrunk the valve seat insert with reduced temperature.
E 2 3B-0623 Cup Plug Installation depth of the cup plugs from the top surface of the cylinder head is 9.0 0.5 mm (0.35 0.02 inch).