SCREW-BUTTON HEAD 8T3991 - Caterpillar

Illustration 1 g02823756
Table 1
Specification for 299-3521 Cylinder Head Gp
Item Qty Part Specification Description
1 2 183-8809 Valve Seat Insert During installation, shrunk the valve seat insert with reduced temperature (Reference temperature : −60° C (−76° F)) and ress the insert into the cylinder heads counterbore.
2 2 289-9745 Valve Seat Insert During installation, shrunk the valve seat insert with reduced temperature (Reference temperature : −60° C (−76° F)) and ress the insert into the cylinder heads counterbore.
3 5 3B-0623 Cup Plug Apply Loctite 11358 to the bores for the cup plugs prior to the installation.
4 5 3B-0645 Cup Plug Apply Loctite 11358 to the bores for the cup plugs prior to the installation.
D - - Installation depth for cup plug is 9.0 0.5 mm (0.35 0.02 inch).
E - - Installation depth for cup plug is 1.0 0.5 mm (0.04 0.02 inch).
Illustration 2 g02823757
Table 2
Item Qty Part Specification Description
5 1 5B-7890 Pipe Plug Before assembly, lubricate the threads with Loctite C5A Copper Anti-Seize.
6 6 131-0420 Cylinder Head Fastener Gp Use the following procedure to tighten the bolts for the cylinder head:
1. Before assembly, apply clean engine oil to the threads of the bolts.
2. Tighten bolt 1 through bolt 8 in the numerical sequence as shown in Illustration 2 to a torque of 30 5 N m (22 4 lb ft).
3. Again, tighten bolt 1 through bolt 8 in the numerical sequence as shown in Illustration 2 to a torque of 200 15 N m (148 11 lb ft).
4. Again, tighten bolt 1 through bolt 8 in the numerical sequence as shown in Illustration 2 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 as shown in Illustration 2 .
6. Tighten two bolts (8) only after bolt 1 through bolt 8 have been given the final torque.
7. Tighten two bolts (8) to 55 10 N m (41 7 lb ft).
7 2 131-0421 Cylinder Head Fastener Gp
8 2 5B-0213 Bolt