STUD 4M8743 - Caterpillar

Illustration 1 g03066037
Table 1
Specification for 4W-0095 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 Illustration 1 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 g03066177
Table 2
Item Qty Part Specification Description
5 5 3B-0645 Cup Plug Before assembly, apply high strength or high temperature anaerobic flange sealant to the bore.
6 2 130-2607 Valve Seat Insert During installation, shrunk the valve seat insert and ress the insert into the cylinder heads counterbore.
7 2 130-2608 Valve Seat Insert During installation, shrunk the valve seat insert and ress the insert into the cylinder heads counterbore.
8 2 3B-0623 Cup Plug Before assembly, apply high strength or high temperature anaerobic flange sealant to the bore.
Installation depth (B) of the cup plugs from the top surface of the cylinder head is 9.0 0.5 mm (0.35 0.02 inch).
9 3 3B-0623 Cup Plug Before assembly, apply high strength or high temperature anaerobic flange sealant to the bore.
Installation depth (D) is 1.0 0.5 mm (0.04 0.02 inch).