- Engine:
- C15 (S/N: BXS1-UP)
- C-15 (S/N: MBN1-UP; 6NZ1-UP)
- C-16 (S/N: 7CZ1-UP)
| NOTICE |
|---|
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
A change in the installation procedure of the Electronic Unit Injector has occurred in order to improve product reliability.
Installation Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| B | 9U-6862 | Tapered Brush | 1 |
| 9U-7237 | Brush Extension | 1 | |
| C | 9U-6863 | Small Bore Brush | 1 |
| 9U-7237 | Brush Extension | 1 | |
| D | 8T-2998 | Lubricant | 1 |
| NOTICE |
|---|
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
|---|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Use Tooling (B) to clean injector seating (8) .
 | |
| Illustration 1 | g01054374 |
- Use Tooling (C) to clean tip bore (9) .
- Install O-ring seals (7). Lubricate the top two O-ring seals with a 50/50 mixture of clean engine oil and Tooling (D) .
 | |
| Illustration 2 | g01039929 |
Note: Do not reuse seals (7) and bolt (4). Use new seals and a new bolt for installation.
- Install electronic unit injector (2), spacer (5), and bolt (4) for the head assembly in the cylinder. Install the electronic unit injector in the same spot in the head assembly.
 | |
| Illustration 3 | g01026993 |
- Install bolt (4). Tighten bolt (4) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
Note: In ALL instances, replace the fuel injector hold-down bolt with a NEW bolt.
- Install the bridge assemblies (3) in the same location in the head assembly.
- Connect harness assembly (1) on electronic unit injector (2). Install the nuts. Tighten the nuts to a torque of 2.5 ± 0.25 N·m (22 ± 2 lb in).
- Install the rocker arms and the rocker arm shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install".
- Adjust the height of the injector. Refer to Testing and Adjusting, "Electronic Unit Injector - Adjust" for information on adjusting the height of the injector.
- Calibrate the injector.
- Connect Cat ET to the service tool connector.
- Turn the keyswitch to the ON position.
- Open the "Injector Codes Calibration" in "Calibrations" under the "Service" menu on Cat ET.
- Enter the new injector trim code for each cylinder.