G3408C and G3412C Engines Caterpillar

Illustration 1	g00897161

(1) Bolts (3/4 inch)

(2) Bolts (3/8 inch)

(3) Studs

Use the following procedure to tighten the cylinder head bolts:

1. Apply 6V-4876 Lubricant to all bolt threads.

2. Tighten bolts 1 through 20 according to the number sequence.

   Torque ... 270 ± 27 N·m (200 ± 20 lb ft)

3. Tighten bolts 1 through 20 according to the number sequence.

   Torque ... 390 ± 10 N·m (290 ± 7 lb ft)

4. Tighten bolts 1 through 20 according to the number sequence.

   Torque ... 390 ± 10 N·m (290 ± 7 lb ft)

5. Install the rocker arm group.

6. Tighten bolts 21 through 26 according to the number sequence to the following torque.

   Torque ... 270 ± 27 N·m (200 ± 20 lb ft)

7. Tighten bolts 21 through 26 according to the number sequence to the following torque.

   Torque ... 390 ± 10 N·m (290 ± 7 lb ft)

8. Tighten bolts 21 through 26 according to the number sequence.

   Torque ... 390 ± 10 N·m (290 ± 7 lb ft)

9. Tighten the 3/8 inch bolts (2) .

   Torque ... 43 ± 7 N·m (32 ± 5 lb ft)

10. Apply 6V-4876 Lubricant to the stud threads.

11. Tighten studs (3) .

    Torque ... 35 ± 5 N·m (26 ± 4 lb ft)

Illustration 2	g01411756

(A) Dimension

Cylinder head thickness ... 123.73 mm (4.871 inch)