Installation of Cylinder Head Gasket{1124} Caterpillar

On-Highway Engines:

C-10 (S/N: 3CS1-UP; 2PN1-UP; 8YS1-UP)

C-12 (S/N: 8YF1-UP; 2KS1-UP; 1YN1-UP; 9NS1-UP; 9SM1-UP)

3176C (S/N: 1WZ1-UP; 9KZ1-UP)

Industrial Engines:

3176C (S/N: 7ZR1-UP; 5DZ1-UP; 2AW1-UP)

3196 (S/N: 6AR1-UP; 1DW1-UP)

Marine Engines:

3176C (S/N: 6BW1-UP)

3196 (S/N: 2XR1-UP)

Introduction

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Disconnect batteries before performance of any service work.

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Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool.

This publication describes the proper method for installation of a cylinder head gasket. The cylinder head has already been removed. The old cylinder head gasket has already been removed. Refer to the Disassembly and Assembly Manual for your engine.

Procedure for the Installation of a Cylinder Head Gasket

1. Thoroughly clean the mating surfaces of the cylinder head and the cylinder block.

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Illustration 1	g00665294

2. Install a new cylinder head gasket (1) and new O-ring seals (2) on the cylinder block. Inspect the condition of the remaining gaskets. Replace the gaskets, if necessary.

Note: To avoid damage to the cylinder head gasket, use guide bolts of an appropriate size to install the cylinder head.

3. Use a suitable lifting device to install the cylinder head on the cylinder block.

4. Lubricate the following components with 6V-4876 Lubricant : the bolt threads, the underside of the bolt heads and the washers. Install the cylinder head bolts and the washers.

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Illustration 2	g00517501

Note: There are currently two types of cylinder head bolts that are being used. The first type is a reduced shank design that is shown in Illustration 3. The second type is a full shank design that is shown in Illustration 4.

Note: Engines that are equipped with a compression brake will have three head bolt studs. Install the head bolt studs in positions (2), (8), and (10). Tighten the head bolt studs in sequence with the cylinder head bolts.

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Illustration 3	g00665298
Cylinder head bolt with reduced shank design Dimension (A) for the reduced shank design is the following amount: 14.58 mm (0.574 inch)

5. Tighten the cylinder head bolts with the reduced shank design according to the following procedure:

   1. Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).

   2. Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).

   3. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).

   4. Loosen bolt (1) through bolt (26) until the washers are loose under the bolt heads.

   5. Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).

   6. Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 160 ± 15 N·m (120 ± 11 lb ft).

   7. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).

   8. Tighten bolt (27) through bolt (33) in a numerical sequence to a torque of 28 ± 7 N·m (20 ± 5 lb ft).

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Illustration 4	g00665299
Cylinder head bolt with full shank design Dimension (B) for the full shank design is the following amount: 15.73 mm (0.619 inch)

6. Tighten the cylinder head bolts with the full shank design according to the following procedure:

   1. Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 150 ± 15 N·m (110 ± 11 lb ft).

   2. Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 150 ± 15 N·m (110 ± 11 lb ft).

   3. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).

   4. Loosen bolt (1) through bolt (26) until the washers are loose under the bolt heads.

   5. Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 150 ± 15 N·m (110 ± 11 lb ft).

   6. Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 150 ± 15 N·m (110 ± 11 lb ft).

   7. Place an index mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 90 degrees (1/4 turn).

   8. Tighten bolt (27) through bolt (33) in a numerical sequence to a torque of 28 ± 7 N·m (20 ± 5 lb ft).

The cylinder head is now installed.

In order to complete the repair process, refer to the Disassembly and Assembly Manual for your engine.