Repair of Exhaust Shields on Certain C13 and C15 Engines{1059, 1067} Caterpillar

Engine:

C-15 (S/N: MBN1-UP; 6NZ1-UP; 9NZ1-UP)

C11 (S/N: KCA1-UP)

C13 (S/N: KCB1-UP; LEE1-UP)

C15 (S/N: SDP1-UP; BXS1-UP; MXS1-UP; NXS1-UP)

Introduction

Do not perform any procedure in this Special Instruction until you read this information and you understand this information.

Safety Section

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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.

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Diesel engine exhaust contains products of combustion which may cause personal injury. Always start and operate the engine in a well ventilated area, and, if in an enclosed area, vent the exhaust to the outside.

Required Parts

Installation Procedure

The current shield and packing have been replaced with improved sealing material and shields.

1. Remove the current shield and packing material from the exhaust manifold and discard.

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Illustration 1	g02943121

2. Place the seal (1) into one half of the clamshell (2) .

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Illustration 2	g02943136

3. Fit the lower portion in place with the "L" (3) of the seal in contact with the center manifold section (4) .

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Illustration 3	g02943176

4. Use tape (5) to hold the seal in place for installation.

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Illustration 4	g02943179

5. Place the upper clamshell (6) half in place.

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Illustration 5	g02943182
Shield and worm gear clamp for C13

6. Put the clamp (7) in place and tighten until both halves of the clamshell contact.

7. Torque the Worm Gear Clamp for the C13 to 10 N·m (7 lb ft).
   Torque the T-Bolt Clamp for the C15 to 16 N·m (12 lb ft).

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Illustration 6	g02943185
Shield and T-Bolt clamp for C15

8. Be sure that no seal material is visible after assembly (8) .