Transmission Oil Leak Repair
Repair InstructionsOnce the leak has been pinpointed and traced to its source, the cause of the leak must be determined for it to be properly repaired. For example, if a case component is resealed but the mating surface is damaged, resealing will not repair the leak. The damaged mating surface must be repaired or replaced. Before attempting to repair a leak, certain conditions should be checked for and corrected if necessary. The following conditions may cause a transmission oil leak.
Important: The Suzuki 5-speed manual transmission does not use gaskets to seal major case components. GM P/N 12346240, or equivalent, should be used where applicable.
^ The oil level is too high.
^ A plugged breather vent.
^ Improperly torqued fasteners, dirty or damaged threads.
^ Warped flanges or mating surfaces.
^ Scratches, burrs or other damage to mating surfaces.
^ Insufficient or excessive amounts of sealer.
^ Cracking or porosity of the cases.
^ Improper sealant used where applicable.
^ Damaged seal bore.
^ Damaged or worn seal.
^ Scratched, nicked or damaged propeller shaft surfaces.
^ Loose or worn bearing causing excessive seal wear.