Grease breaking down or oil leak?

[thejudges69]

Alright I have a dumb question.

Has anyone else experienced this issue.

Rebuilt my 60 series 300k ago, out of frame. And ever since the bellhousing gets wet on the transmission. The weird part is that it’s usually only the seam where the bellhousing and rear structure are mated with the transmission bolts.

What’s weird is that the rear seal isn’t leaking, verified through the pipe plug in the bottom of the rear structure, and the transmission isn’t losing any oil. It seems to get worse when I grease the throughout bearing shaft and the throw out bearing, almost like the grease is liquifying and leaking. The structure only gets wet from just below the throw out bearing shaft to the bottom. If I don’t grease it for a couple intervals, then it will eventually stop. I do believe rear structure is leaking cause of where the oil/grease is. And the tear structure is sealed with anaerobic and we o-ring Machined the structure.

Has anyone else experience this? I hate to pull the trans and rear structure to find its just the grease causing the issue.

This is the grease I’ve been using for the last several years.

 

[Sberry]

How much are you greasing? I would want 1 pump per 100 hrs, even 200 or 250 with modern grease.

 

[thejudges69]

How much are you greasing? I would want 1 pump per 100 hrs, even 200 or 250 with modern grease.

The throw out shaft bushings get a quick squirt, and the throw out bearing greased til it comes out so it coats the clutch brake. About every 6-7k miles, is my grease intervals.

 

[Vercingetorix]

https://www.autozone.com/test-scan-...l-systems-leak-detector-uv-dye-1oz/667635_0_0

 

[Cujet]

On my plane, the prop pitch is controlled by oil pressure. There is a small tube inside that carries oil from the crankshaft to the dome in the front. Yet over time as the prop ages, oil gets all over the windshield during flight. What is actually happening is each blade has a roller bearing and the grease is shedding it's oil. It seeps out around the lock rings, and down the prop blade. Where is carefully mixed with the airflow and gets on to the windshield. Ugh.

The clue is that the oil from the grease is clear yellow. Unlike my engine oil.... I guess my suggestion is to try bright Red Grease.....