| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 177-8001 | Pilot Sleeve | 2 |
| B | 249-2936 | Adapter | 1 |
| C | 274-7932(1) or 274-7933(2) | Guide | 1 |
| (1) | Front Removal |
| (2) | Rear Removal |
Start By:
- Remove the rocker arms and the rocker shafts. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove".
- Remove the turbochargers. Refer to Disassembly and Assembly, "Turbocharger - Remove".
- Remove the exhaust elbows. Refer to Disassembly and Assembly, "Exhaust Elbow - Remove and Install".
- If the camshaft is removed through the front housing, remove the water temperature regulator. Refer to Disassembly and Assembly, "Water Temperature Regulator - Remove and Install".
| NOTICE |
|---|
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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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates. |
| NOTICE |
|---|
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
|---|
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Do not turn the crankshaft or the camshaft while the camshaft gear is removed. If the rear gear group is not correctly timed during installation, interference can occur between the pistons and the valves, resulting in damage to the engine. |
| NOTICE |
|---|
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Care must be used when removing or installing the camshaft. Do not damage the finshed surfaces of the camshaft or the camshaft bearings. |
- Drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
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Illustration 1 g01194576 - Remove bolts (2) and washers (3).
- Remove cover (1) and the O-ring seal.
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Illustration 2 g01194581 - Remove bolts (4). Remove gear (5).
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Illustration 3 g01194585 - Remove bolts (6), thrust plate (7), and adapter assembly (8).
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Illustration 4 g01194626 - Use bolt (6) in order to remove sealing plate (9). Remove the O-ring seals.
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Illustration 5 g01206950 - Remove bolts (11) and washers (12). Remove cover (10) and the O-ring seal.
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Illustration 6 g01194932 - Remove bolts (13) and damper (14).
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Illustration 7 g01194933 - Remove bolts (15). Remove sealing plate (16) and adapter assembly (17).
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Illustration 8 g01194934 - Install Tooling (A) and Tooling (B) on the rear of camshaft (18). Install Tooling (A) on the front of camshaft (18).
- Install Tooling (C) on the front housing or the rear housing. Tooling (C) is used to support the camshaft.
Note: It is necessary to install Tooling (A) and Tooling (B) on the camshaft. Tooling (A) and Tooling (B) will support the camshaft as the camshaft is moved out of the cylinder head and into Tooling (C). Align the camshaft with the bore of Tooling (C).
Note: Avoid lifting the camshaft. The camshaft should rest on Tooling (A) and Tooling (B). Lifting of the camshaft can cause misalignment as the camshaft is removed, resulting in damage to the camshaft bearings.
- Carefully slide the camshaft out of the cylinder head for removal. Use two technicians to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of the camshaft is approximately
35 kg (77 lb) .Note: Rotate the camshaft during removal. This will prevent the camshaft from binding in the camshaft bearings.
