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View Full Version : How Do You Lubricate a Hydrovac?



reichsrundfunk
07-15-2009, 08:41 AM
Hey guys, I know that annually it is important to lubricate a hydrovac brake booster with some mink oil or similar, however, where is the place where you pour it in? How is it done?????????????????

-George-
-63 GT Hawk
-63 Champ
-56J
-51 Commander Land Cruiser

Dan White
07-15-2009, 10:09 AM
There should be a small flat rubber plug in the back of the vacuum cylinder. If your unit is painted black it may be hard to see but it is there. Take it out, get a small syringe and put 1oz. of Neats foot oil in it and squirt it in the hole and then put the plug back in. You are good to go.

In case you want to know how Neats foot oil is made:

http://en.wikipedia.org/wiki/Neatsfoot_oil

Dan White
64 R1 GT
64 R2 GT

jimmijim8
07-15-2009, 12:51 PM
Mine was a pipe plug in the back side. Neatsfoot oil is available from Ace or Tru-Value or any tack shop. 1 ounce in the booster. jimmijim

reichsrundfunk
07-15-2009, 09:11 PM
There's a plug fitting (metal) on the back (the side opposite the small round atmosphere filter) towards the bottom. I guess that's it??????

-George-

Dan White
07-16-2009, 01:24 PM
See attached:

http://i128.photobucket.com/albums/p167/drwhite55/hydrodiagram.jpg

http://i128.photobucket.com/albums/p167/drwhite55/hydropic.jpg

Dan White
64 R1 GT
64 R2 GT