Car lift problem

[mike48130]

Interesting.

 

[ovrszd]

Sounded normal the first push. Couldn't tell if it was raising the lift?

Definitely locked up on the second push.

 

[leveled]

Sounded normal the first push. Couldn't tell if it was raising the lift?

Definitely locked up on the second push.

yes it raises from the ground, or when I engage the lowering valve to temporary lower pressure.

 

[ovrszd]

And, I assume, it will lift a load if started with no load???

If so, that would say the pump is fine. And that the motor will run with a load.

If so, the issue is getting the motor to start with a load?

I can't see anyway that's a valve problem or pump problem. Certainly sounds like a motor problem.

Very curious to see the outcome of this problem.

I wonder if the guy that worked on the motor was able to test it under load?

 

[mike48130]

I keep going back to the motor or capacitor. Have you looked around for a used pump? My lift was 3 phase and I bought several used ones from a guy that were cheap, that's how I ended up with a spare motor.

 

[ovrszd]

I keep going back to the motor or capacitor.

Yeah, I think so too Mike.

Really has my curiosity up....

 

[leveled]

I keep going back to the motor or capacitor. Have you looked around for a used pump? My lift was 3 phase and I bought several used ones from a guy that were cheap, that's how I ended up with a spare motor.

We tested the motor and it draws 60 amps when stuck, which we decided that it was not a motor problem, because it is using 6 times the regular working amps. When running it only uses 11 amps. I tested this with a clamp meter. I keep going back to the hose being the problem. I am still waiting on the manufactures opinion. I am really not sure but i learned a lot so far.

 

[ovrszd]

I'm a curious guy. If I thought it was a hose problem I would have came home with a new hose by now. My curiosity would just have to know.

The only reason I won't discredit the hose theory is that I've saw rubber flexible brake lines on cars separate internally and collapse causing the caliper to stay engaged.

 

[leveled]

I'm a curious guy. If I thought it was a hose problem I would have came home with a new hose by now. My curiosity would just have to know.

The only reason I won't discredit the hose theory is that I've saw rubber flexible brake lines on cars separate internally and collapse causing the caliper to stay engaged.

I am getting pretty close to doing that, my set back is not having any response from the lift manufacture. I am probably going to order on discount hydraulics online. Have you guys used them?

 

[ovrszd]

Yeah, I've used them with good results.

Surplus Center is a good one too.

My local Farm/Home store has a good stock of hydraulic hoses in various sizes and lengths.

My local JD dealer builds what you want.