Installation of New Injector Sleeve O-Ring Seals{1100, 1125} Caterpillar

Engine:

C9 (S/N: MTB1-UP)

Introduction

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

This Special Instruction is intended to provide instructions on installing O-Ring seals on the injector sleeves.

Required Parts

Required Tools

Cleaning the Injector Sleeves and Installing O-Ring Seal

Note: Thoroughly clean the injector sleeves with the 4C-5552 Large Bore Brush .

Note: Thoroughly clean the bore in the cylinder head for the injector sleeves with the 4C-5552 Large Bore Brush .

Note: Do not apply any lubricant to the O-ring seals.

Illustration 1	g01379557
(1) 310-7255 O-Ring Seal (2) 310-7257 O-Ring Seal (3) 227-1200 Injector Sleeve

1. Install the upper O-Ring (1) on the injector sleeve (3) .

   Note: The upper O-Ring is dark blue.

2. Install the lower O-Ring (2) on the injector sleeve (3) .

   Note: The lower O-Ring (2) is turquoise.

3. Position the injector sleeve on the 221-9777 Sleeve Installer .

4. Apply a thin coat of 4C-9507 Retaining Compound around the outer circumference of area (A). Ensure that the retaining compound does not make contact with the O-Ring seal at any time.

5. Position the injector sleeve (3) in the cylinder head by using the 221-9777 Sleeve Installer .

6. Slowly push the injector sleeve into the cylinder head by gently tapping with a hammer.

   Note: Allow the 4C-9507 Retaining Compound to cure for two hours at 21 °C (70 °F) before filling the engine with coolant. Longer curing time is required for lower temperatures.

7. Install the unit injectors. Refer to Disassembly and Assembly, "Unit Injector-Install" to install the unit injectors.