366-6004 186.33 mm OD Crankshaft Seal
Cat® Crankshaft Seal for Flywheel Housing
Description
The crankshaft seal is used to retain engine oil and prevent external contaminants from entering the engine oil system. Seals for dry applications (air-to-oil interface) typically include a primary sealing lip that prevents engine oil leakage and a dust lip. In wet applications (oil-to-oil interface), the dust lip is replaced by an auxiliary lip that pumps external fluid away from the engine. Some seals have a plastic sleeve to aid the installation process.
Features
- For counterclockwise crankshaft rotation
- Material: Plastic (Polytetrafluoroethylene) (PTFE)
- Air-to-oil interface
- Shaft Diameter: 154.42 mm (6.08 in)
- Bore Diameter: 186.14 mm (7.33 in)
- Outside Diameter: 186.33 mm (7.34 in)
- Cat crankshaft seals are precision-engineered for extremely demanding applications and withstand high rotational speeds, high temperatures and high-frequency axial movement.
- Cat sealing systems undergo a robust design, testing and validation process. Protect your investment with the latest Genuine Cat seals
Applications
Used as needed for servicing Cat engine crankshafts. Refer to your Operation and Maintenance Manual or contact MECHSC for more information.
Specifications
| Material | Polytetrafluoroethylene (PTFE) Plastic |
|---|---|
| Hole Diameter | 186.1 mm (7.328 in) |
| Material Description | PTFE |
| Outside Diameter | 186 mm (7.3 in) |
| Overall Width | 22.0 mm (0.866 in) |
| Primary Seal Material | EPDM (Ethylene Propylene Diene Monomer) |
| Seal Type | Lip |
| Shaft Diameter | 154.4 mm (6.079 in) |
| Style | CNPI |
| Width | 22 mm (0.9 in) |
Compatible Equipment
- Generator Sets: 3406C, 3406B
- Track Loaders: 992, 993, 826H, 990K, 824G, 826K, 834H
- Cold Planers: PL87, PL83, PM-200, PL72, PM622, PM620
- Compactors: 834K, 824K, 825K, C-15
- Engines: C15, C27, C32, C18
- Excavators: 3456, 637K, 657G, 637G, 6015B, 621G, 6015, 6040, 6015 FS, 6020B, 6030, 6018, 3508B, 637E
- Asphalt Pavers: AD45, AD63, AD30
- Skid Steer Loaders: 24
- Wheel Excavators: MD6310, MD6250
- Dozers: D8, D8T, D8R, D9T, D11T, D8N, D9R, D10T2, D6T, D11R, D10R, D9N, D10, D9
- Wheel Loaders: RM500B, 990H, R2900G, 980H, 988F, 986H, R3000H, 836, 980G, 988H, R2900 XE, 834, 988K
- Off-Highway Trucks: 740, 745, 740 GC, 745C, 773E, 735, 740B, 773, 770G, 772G, 777, 771D, 773F, 775G, 777D, 777E
Additional information
| Machine Model | 24, 3406B, 3406C, 3456, 3508B, 6015, 6015 FS, 6015B, 6018, 6020B, 6030, 6040, 621G, 637E, 637G, 637K, 657G, 735, 740, 740 GC, 740B, 745, 745C, 770G, 771D, 772G, 773, 773E, 773F, 775G, 777, 777D, 777E, 824G, 824K, 825K, 826H, 826K, 834, 834H, 834K, 836, 980G, 980H, 986H, 988F, 988H, 988K, 990H, 990K, 992, 993, AD30, AD45, AD63, C-15, C15, C18, C27, C32, D10, D10R, D10T2, D11R, D11T, D6T, D8, D8N, D8R, D8T, D9, D9N, D9R, D9T, MD6250, MD6310, PL72, PL83, PL87, PM-200, PM620, PM622, R2900 XE, R2900G, R3000H, RM500B |
|---|---|
| Equipment Type | Excavators, Wheel Excavators, Wheel Loaders, Track Loaders, Skid Steer Loaders, Dozers, Off-Highway Trucks, Compactors, Asphalt Pavers, Cold Planers, Engines, Generator Sets |
| Part Source | Genuine OEM |







