Repairing the Leak

Once the origin of the leak has been pinpointed and traced back to its source, the cause of the leak must be determined in order for it to be repaired properly. If a gasket is replaced, but the sealing flange is bent, the new gasket will not repair the leak. The bent flange must be repaired also. Before attempting to repair a leak, check to see if the following conditions exist as they may cause a leak:
- Gaskets
- Fluid level/pressure is too high.
- Crankcase ventilation system malfunctioning.
- Improperly tightened fasteners or dirty/damaged threads.
- Warped flanges or sealing surface.
- Scratches, burrs or other damage to the sealing surface.
- Damaged or worn gasket.
- Cracking or porosity of the component.
- Improper sealant used (where applicable).
- Seals
- Fluid level/pressure is too high.
- Crankcase ventilation system malfunctioning.
- Damaged seal bore (scratched, burred or nicked).
- Damaged or worn seal.
- Improper installation.
- Hacks in component.
- Shaft surface scratched, nicked or damaged.
- Loose or worn bearing causing excess seal wear.