Oil Leak from GE AK Type Power Breaker 1

[burntcoil]

We have an oil leak from GE AK-5A-75 breaker. The oil is leaking from the Gear Reduction Unit coupled to charging motor. We need to refill this but the manual says the type of oil is similar to Atlantic Refining Company Grade HFS#3. Can anyone share the data sheet for this type of oil or alternate.

Thanks

 

[ScottyUK]

It's listed as an AGMA #2 gear oil, so plenty equivalents available today. Here's an old table which lists HFS #3 along with a few equivalents of the day, some better known than others I suspect.

 

[dpmac]

I believe at the end of the day it will end up to be basic SAE90 gear oil.

 

[Zogzog]

The gaskets in those are only good for about 10 years and should be replaced if it is leaking