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RE: Hyd cylinder question

To: <shop-talk@autox.team.net>
Subject: RE: Hyd cylinder question
From: "Randall Young" <ryoung@navcomtech.com>
Date: Tue, 11 Nov 2003 10:56:05 -0800
> I am replacing a seal in my engine hoist hyd cylinder.  I have
> drained all the fluid out and am getting ready to refill with
> fresh fluid and have discovered that I don't know the proper way
> to fill the darn thing.  It has a hole about 2/3rds of the way up
> the housing with a rubber plug in and I assume that this is where
> the fluid goes in. Do I fill it with the piston extended or
> bottomed? Any thing I should do to purge the air out once I fill
> it? Just fill it till it wont take any more? Fill it standing?
> laying down? Ohhh so many choices:)

ISTR the instructions with my hoist said to have the cylinder retracted and
vertical, and fill to the level of the hole.  I don't believe it's
especially critical, too little oil will just limit how high you can extend
the hoist, and too much will just blow the plug out and make a mess.
Neither one will cause the load to drop or hurt anything.

Randall





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