C-9 Engines for Caterpillar Built Machines Caterpillar

Illustration 1	g01313396

Note: Lubricate bolts with clean engine oil prior to assembly.

Use the following procedure in order to tighten the cylinder head bolts:

1. Tighten bolt (1) through bolt (26) in a numerical sequence.

   Tighten the bolts to the following torque. ... 160 ± 15 N·m (118 ± 11 lb ft)

2. Tighten bolt (1) through bolt (26) again in a numerical sequence.

   Tighten the bolts again to the following torque. ... 160 ± 15 N·m ( 118 ± 11 lb ft)

3. Place a mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence.

   Rotate the bolts in the clockwise direction. ... 90 degrees (1/4 turn)

4. Loosen bolt (1) through bolt (26) in a numerical sequence.

   Loosen bolts to the following torque. ... 0 N·m (0 lb ft)

5. Repeat steps 1 through 3.

6. Tighten bolt (27) through bolt (31) in a numerical sequence.

   Tighten the bolts to the following torque. ... 28 ± 7 N·m ( 21 ± 5 lb ft)

(32) Plug (not shown)

Tighten the plugs for the high pressure oil gallery on each end of the cylinder head to the following torque. ... 350 ± 30 N·m ( 258 ± 22 lb ft)

Illustration 2	g01094412

Illustration 3	g00613567
View A-A

Note: Apply 4C-9507 Retaining Compound to the bores for the cup plugs prior to assembly.

(27) The cup plugs (X) are measured from the head face to the top edge of the plug. Depth of installation ... 1.5 ± 0.5 mm ( 0.06 ± 0.02 inch)

Height of new cylinder head ... 130.00 ± 0.15 mm ( 5.118 ± 0.006 inch)

Note: The flatness of the cylinder head should be within 0.15 mm ( 0.006 inch). The flatness should also be a maximum of 0.05 mm ( 0.002 inch) for any 150.00 mm ( 5.906 inch) span.