Recent Topics
Whay diesel oil turns black immediately after chan
by DibroTeam
09/16/14 02:15 AM
I need some advice
by sky06
09/16/14 01:24 AM
My 15 year old filter
by SubieShane
09/16/14 12:01 AM
Using a little hot-rod tech on industrial equip
by DoubleWasp
09/15/14 11:48 PM
Headlight Questions
by SubieShane
09/15/14 11:43 PM
Vinyl record cleaner
by whizbyu
09/15/14 11:32 PM
King Kong NAPA 1459 filter to replace PH8/FL1
by DoubleWasp
09/15/14 11:07 PM
C.A.R. Products Bullet Proof Paint Coating - Pics
by The Critic
09/15/14 10:27 PM
FireClean
by Sworbeyegib
09/15/14 10:13 PM
Does Pleat Count Matter?
by dkryan
09/15/14 09:38 PM
ATF Cooler Hose Broke
by jmb106
09/15/14 08:55 PM
Rotella T6 in Rotax 4-tec Supercharged
by Bluestream
09/15/14 08:14 PM
Newest Members
dougout, CDot, mazarnelli, poiyt, VAzx6R
51314 Registered Users
Who's Online
26 registered (97prizm, CATERHAM, Char Baby, Doug Hillary, andyd, ac_tc, 1 invisible), 583 Guests and 204 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51314 Members
64 Forums
219295 Topics
3460462 Posts

Max Online: 2862 @ 07/07/14 03:10 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: 10805
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: 1710
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 Offline


Registered: 01/30/07
Posts: 9160
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