|
I have one of these that I got new from Sam's Club about two years ago for about $65.
The one I have has the feature of quick rise and then changes internally for the heavy push.
I think two or three things could have happen.
Damage could have occurred to the closing valve, that the handle operates.
A gorilla on the end handle! I think of operator caused errors! It could have been strained and we know Chinese metals. It may be leaking past on the heavy load.
Next, the pump piston change over is suppose to happen. The shuttle valve is stuck or a check valve has trash in it.
It could be trash in the oil or low oil as others suggest.
Changing the oil or maybe a flush will fix it.
It is hard for this to work because the majority of the oil you have access to is the area around the main lift piston. That is the reservoir.
The oil level is established with the jack all the way down and the valve body end up on most jacks. Then it is filled up. I think that is how mine is done. As I remember it was awkward handling it to check to see if it was full from the factory.
Some disassembly may have to be done to the valve body.
Removing plugs of cross drilled holes to access the check balls. They are beneath the handle pistons and you will probably have to blow them out with compressed air. Cover all your holes and be ready to catch anything you can't see.
Another thought, you could remove the plugs and then pump the handle pistons by hand and be ready to catch the trash or parts while the oil is still in it. Either way be ready and watch for the order everything comes apart. Its all fairly simple but can get or will be a oily job.
This jack was meant to be yours! Good luck on your up lifting experience!
|
