What causes a primary chain case to leak?
The primary chain case cover contains Harley primary chain case lubricant which lubricates the clutch pack and primary chain. Failure of the primary chain case cover gasket or either of the two inspection cover gaskets will result in a leak and need to be replaced. Start the motorcycle and drive it until it is up to operating temperature.
What causes an oil leak between the primary and transmission?
The reason was that they didn’t know you must lubricate the seal before you reinstall the primary cover. When you put the primary cover on with the seal dry, when the engine starts up, the mainshaft immediately goes to 1000 RPM or higher with no lubrication on the seal.
Why is my inner primary leaking on my Harley?
It was a very small amount and the majority of leak was obviously formula + from the primary. I wasn’t sure if I was just seeing things or not but it is possible that a small amount of tranny fluid crept in there.
The primary chain case cover contains Harley primary chain case lubricant which lubricates the clutch pack and primary chain. Failure of the primary chain case cover gasket or either of the two inspection cover gaskets will result in a leak and need to be replaced. Start the motorcycle and drive it until it is up to operating temperature.
Why is the bottom of my Norton chaincase leaking?
The source of the leak was quite evident, oil was passing between the chaincase and crankcase, and dropping out the bottom. This was almost certainly caused by the full sump, (full of oil that is), which caused an incessant flow of oil during re-assembly the last time. This had prevented the gasket from sealing correctly, even with blue Hylomar.
The reason was that they didn’t know you must lubricate the seal before you reinstall the primary cover. When you put the primary cover on with the seal dry, when the engine starts up, the mainshaft immediately goes to 1000 RPM or higher with no lubrication on the seal.
It was a very small amount and the majority of leak was obviously formula + from the primary. I wasn’t sure if I was just seeing things or not but it is possible that a small amount of tranny fluid crept in there.