Installation Procedure for the 206-7748 Cylinder Head Group or the 223-6524 Cylinder Head Group {1124} Caterpillar

Engine:

G3408 (S/N: 6NB1-UP; 6RJ1-UP)

G3408C (S/N: 3WR1-UP; 8YR1-UP; 6FW1-UP; BAZ1-UP)

Introduction

This Special Instruction provides the procedure that is necessary for installing the 206-7748 Cylinder Head Gp or the 223-6524 Cylinder Head Gp and the 224-1283 Cylinder Head Gasket on the G3408 Engines and on the G3408C Engines.

Do not perform any procedure that is outlined in this Special Instruction until the entire Special Instruction has been read and understood.

Installation

Illustration 1	g00918139

Use the following procedure to tighten the cylinder head bolts:

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

2. Tighten bolts 1 through 14 according to the number sequence to the following torque.

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

3. Tighten bolts 1 through 14 according to the number sequence to the following torque.

   Torque ... 390 ± 10 N·m (288 ± 7 lb ft)

4. Tighten bolts 1 through 14 according to the number sequence again to the following torque.

   Torque ... 390 ± 10 N·m (288 ± 7 lb ft)

5. Install the rocker arm group.

6. Tighten bolts 15 through 18 according to the number sequence to the following torque.

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

7. Tighten bolts 15 through 18 according to the number sequence to the following torque.

   Torque ... 390 ± 10 N·m (288 ± 7 lb ft)

8. Tighten bolts 15 through 18 according to the number sequence again to the following torque.

   Torque ... 390 ± 10 N·m (288 ± 7 lb ft)

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

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

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

11. Tighten studs (3) to the following torque.

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