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- เผยแพร่เมื่อ 12 ก.ย. 2024
- I recently purchased a hydraulic trolley table for lifting moderately heavy objects to a reasonable height to for working on in my shed. It didn't work and needed adjusting. This is how I went about adjusting it. It may be of interested if one is faced with a similar problem.
I can’t thank you enough. I bought the 1000lb table and it failed in a middle of a job. It went down and it wouldn’t come up again. I got extended warranty so I went to the store and they gave me a new one… well, it was dead on arrival, same problem. I did the bleeding process, did a modified bleeding I found in TH-cam, and that didn’t solve the issue. Not until I saw your video and saw that you had exactly the same problem. I adjusted the release valve stem, and that did it! I’m so grateful I don’t have to go to the store again. And I think that the other table I returned was exactly the same issue.
Again thanks. And I’m subscribing!
Thanks for taking the time to comment - I'm sure there are a lot of us that get caught out by this adjustment, it had me going for a time. Pleased the video helped you out.
Yes went thru all that. Bottom line is that screw adjustment on the jack valve. To work properly with lever released that valve plug should be fully out. This means jack can be fully pressurized and no internal release of fluid can happen. The problem is that to obtain proper operation that valve plug will need to move in about a quarter inch. Only way to adjust. I personally do not feel safe with that. That valve plug should be fully out to ensure safety and no fluid release . Issue is the linkages are not properly designed to allow full valve travel. At some point I will need to correct that. I will build some rods to put under if ever heavy weight. Not very safe. The 500 pounders have safety bars built in for that purpose
Thanks for posting this. Helped me get my harbor freight one working that I thought was defective
It's good to know it helped you. I always thought the video might help others having the same problem. Doesn't really matter what the make, they are all fairly similar in operation.
Roger,
Thanks for a wonderful video!
My own 500-lb. lift table (my first) seems to work just fine (Pittsburgh Automotive is the brand). Cheap thing, probably made in China.
I wonder if you have any suggestion regarding the type or grade of hydraulic fluid (oil) for these tables. The Owner Manual doesn't indicate.
Also: Are you satisfied with your lift table, now that you've had it a couple of years?
Thanks again for the video!
-- Old Matt in Texas
Oil - I would be looking for an iso32 oil specifically for hydraulic applications. It’s been a long time since I have had to buy any as I still have some on the shelf in the shed for my portapower rams, trolley jacks and bench press. If I had to buy more here in the UK my local “MachinMart” store sells the stuff (expensive) but there are more cost effective options on ebay.
Yes, it has seen couple of years use, more occasional rather than every day. It hasn’t let me down, or required topping up so far. For me it is an “OK piece of luxury”, not an essential tool. Mostly used to get heavy things to a sensible working height to save my back from further punishment.
My cable actually came off the release handle. Would you happen to know how to reattach? Or can I use the adjustment bolt underneath to lower it?
No - I don’t know! The procedure, all though basically similar, will vary from model to model, or manufacturer to manufacturer.
WORK SAFE AT ALL TIMES. If your table is raised make sure that it is supported with a block of wood to ensure the table does not collapse and trap you should you release the hydraulic pressure. Otherwise there is an extremely high chance of serious injury.
Turning the table on its side is a safer option while servicing or accessing parts under the table top.
EXPERIENCE: For those with limited or no experience of mechanical engineering, the safest option is to get someone who knows what they are doing to do the work. I find it worrying that anyone would ask this question, when to me the solution is obvious on the model I have. Please be careful when repairing and using hydraulic equipment. Never rely on it where your, or anyone else’s, safety is at risk. Be aware that hydraulic systems can fail at any time.
My goodness it is taking forever to listen to this guy....he must have nothing else to do!!!!
Just fixed mine. Thanks for taking the time to make the video
We all expect these things to work straight out the box! Can be a bit of headbanger if they don't especially as most of us know little about hydraulics - me included. Thanks for taking the time to comment.
Mine pumps up but wont go all the way down?
🙏🏼
I’m following your video but mine just doesn’t want to be pumped up everything I’m trying isn’t working. I just brought this today so frustrating.
From memory, it took me a couple of days to get mine working. I think the main problem was that mine had an airlock in the hydraulics. Probably this occurred during transit. I would suggest that you check the hydraulic oil level. It could be too low or even empty. How you do this probably varies from model to model and hopefully it came with an instruction manual. I wasn't impressed with the handbook or the quality of engineering of mine just another of those cheap imports that make having one an affordable option. However it does its job well enough. I think you are at the stage were you need to check the hydraulic oil level before you struggle any further. It is so strange, this was my first video I made, and now the second comment within one week.