Recent Topics
GM 4200 knocking noise
by i6pwr
04/20/14 11:32 PM
Last Corvettes recovered...
by mattwithcats
04/20/14 11:24 PM
09 Flex - how to put in Techron
by Barkleymut
04/20/14 11:06 PM
Restrictive Wix air filter
by Chris142
04/20/14 10:46 PM
5W30 VS 10W30 above freezing temps
by westwind999
04/20/14 10:31 PM
ARCHOIL
by domer10
04/20/14 10:08 PM
New toy for the garage: needs a full service.
by JD4440
04/20/14 10:05 PM
Shaking/vibrating air filter housing area
by Rolomoto
04/20/14 09:58 PM
Used the Craftsman warranty today.
by Stag
04/20/14 09:42 PM
Selling aluminum cans
by Barkleymut
04/20/14 09:36 PM
newer tire in the back arguement
by 08sienna
04/20/14 09:24 PM
'98 Toyota Avalon - Glove Box blub fitment problem
by mercuryblues
04/20/14 08:44 PM
Newest Members
Delta, bnd, hammere30, SpartanSoul, jriordanzoom
49642 Registered Users
Who's Online
82 registered (Bandito440, Benoit, 2012AccentSE, 5sfe91, 147_Grain, 77GrandPrix, 6 invisible), 1216 Guests and 207 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
49642 Members
64 Forums
212192 Topics
3325856 Posts

Max Online: 2605 @ 04/19/14 12:41 PM
Donate to BITOG

Topic Options
#1046936 - 12/15/07 01:28 PM Hydraulic jack won't pump up
Kestas Offline



Registered: 06/04/02
Posts: 10721
Loc: The Motor City
My hydraulic jack won't pump up the lift mechanism. The lever mechanism works okay and the unit is full of hydraulic fluid, but it won't pump up. This is a Prolift 3300 lb jack with wheels and the hydraulic pump is mounted horizontally.

I believe it may have air in it that needs to be bled. What is the procedure for bleeding air out of the unit?

This has happened in the past and I've always managed to get it working... but not this time. The unit is over 20 years old, but I don't want to toss it if it's still repairable.

Top
#1046937 - 12/15/07 01:30 PM Re: Hydraulic jack won't pump up [Re: Kestas]
XS650 Offline



Registered: 12/21/03
Posts: 12385
Loc: Northern CA
Sounds like a dead seal.
_________________________
Whenever you find yourself on the side of the majority, it is time to pause and reflect.

--Mark Twain

Top
#1047038 - 12/15/07 05:23 PM Re: Hydraulic jack won't pump up [Re: XS650]
88Dakota Offline


Registered: 02/02/07
Posts: 55
Loc: Massachusetts
From what I remember of the bleeding procedure, you're supposed to loosen the release screw and pump it for a while.

Top
#1047108 - 12/15/07 07:16 PM Re: Hydraulic jack won't pump up [Re: 88Dakota]
SHOZ Offline


Registered: 06/28/03
Posts: 1366
Loc: Illinois
Yes it needs bled. I have that problem as mine gets hauled around.

Top
#1047225 - 12/15/07 11:10 PM Re: Hydraulic jack won't pump up [Re: SHOZ]
alreadygone Offline


Registered: 01/04/06
Posts: 3161
Loc: North Arkansas
88Dakota's reccomendation is correct. In it's normal position, open valve and pump repeatedly. ten when valve is closed it should work properly.

Bob
_________________________
To which version of reality would you like to convert me?

Bob

Top
#1047230 - 12/15/07 11:23 PM Re: Hydraulic jack won't pump up [Re: Kestas]
Merkava_4 Online   content


Registered: 01/30/07
Posts: 7878
Loc: Clovis, CA
A lot of these floor jacks have no rebuild kits available; they're pretty much a throw-away when the seals give out.

I've go an old Taiwanese made 3.5 ton jack that needed some steel balls for the races in the swivel casters. I was so dang stubborn, that I went and found a place that stocked the steel balls I wanted; now it rolls real nice.

Top