Removal Procedure (Naturally Aspirated Engines)
| 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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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. |
The two cylinder, the three cylinder and the four cylinder engines have different crankcase breathers. The removal procedure is identical for all models.
- Remove the setscrews (1) and remove the breather cover (2) from the valve mechanism cover (10).
- Remove the spring (3). Remove the diaphragm assembly (4).
- Clean the vent hole (6). Clean the cavity (5) for the breather assembly in the valve mechanism cover (10).
- If necessary, remove the setscrews (7). Remove the plate (8) and remove the gauze (9).
- Clean all parts and inspect all parts. Replace any parts that are worn or damaged.
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| Illustration 1 | g01114038 |
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Typical example | |
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Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened. |
Removal Procedure (Turbocharged Engines)
| 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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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. |
- Remove the setscrews (1) and remove the breather cover (2) from the valve mechanism cover (12).
- Remove the spring (3). Remove the diaphragm assembly (4).
- Remove the adapter (6). Remove the joint (7). Clean the vent hole (5).
- Clean the cavity (8) for the breather assembly in the valve mechanism cover (12).
- If necessary, remove the setscrews (9). Remove the plate (10) and remove the gauze (11).
- Clean all parts and inspect all parts. Replace any parts that are worn or damaged.
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| Illustration 2 | g01114041 |
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Typical example | |
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Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened. |
Installation Procedure (Naturally Aspirated Engines)
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | - | Loctite 594 | - |
| 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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Make sure that the components of the breather assembly are installed correctly. Engine damage may occur if the breather assembly is not working properly. |
The two cylinder, the three cylinder and the four cylinder engines have different crankcase breathers. The installation procedure is identical for all models.
- If necessary, install a new gauze (9). Apply a bead of Loctite 594 to the mating face of the plate in the valve mechanism cover (10). Install the plate (8). Install the setscrews (7). Tighten the setscrews to a torque of
1.5 N·m (13 lb in) .Show/hide tablePersonal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
- Install a new diaphragm assembly (4) into cavity (5) of the valve mechanism cover. Install a new spring (3).
- Install the breather cover (2) and the four setscrews (1). Tighten the setscrews to a torque of
3 N·m (27 lb in) .
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| Illustration 3 | g01114038 |
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Typical example | |
Installation Procedure (Turbocharged Engines)
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | - | Loctite 594 | - |
| NOTICE |
|---|
|
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
|---|
|
Make sure that the components of the breather assembly are installed correctly. Engine damage may occur if the breather assembly is not working properly. |
- If necessary, install a new gauze (11). Apply a bead of Loctite 594 to the mating face of the plate in the valve mechanism cover (12). Install the plate (10). Install the setscrews (9). Tighten the setscrews to a torque of
1.5 N·m (13 lb in) . - Install a new joint (7). Install the adapter (6).
Note: the connection on the adapter should face to the rear of the engine. The vent hole (5) should face upward.
Show/hide tablePersonal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
- Install a new diaphragm assembly (4) into the adapter (6). Install a new spring (3).
- Install the breather cover (2) and the four setscrews (1). Tighten the setscrews to a torque of
3 N·m (27 lb in) .
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| Illustration 4 | g01114041 |