Hein Werner 93642 Rebuild

[Master Caution]

Hello Everyone,

As a lurker on the garage journal forums I found several posts to help me renovate my garage in the past year. I've installed epoxy flooring, additional power outlets, plumbing and sink, an overhead hoist, lighting, shelving, etc. Thank you all.

Now to my problem, my trusty Craftsman jack failed recently. I purchased a HW 93642 online but it arrived damaged. Oil was leaking from it so I refilled and bled it. The vent cap was cross threaded and wouldn't seat completely but it worked once and stopped afterwards. I contacted the company where I purchased it, they refunded my money but didn't want me to return it.

Now, it has cost me a lot of downtime thus far but I don't really want to throw it away. SFA says they can't warranty it and a complete pump assembly costs more than a new jack at HF. I am a decent mechanic but I have little knowledge on jacks. I thought about buying the new Daytona jack as a replacement instead. However, is this worth the time and money to rebuild and how do I go doing it?

I sent a PM to Hi Ball for his opinion but thought that I would put it out there for everyone's input.

Marc

 

[Roberts210]

Heck yes. Rebuild that sucker. I rebuilt my HW some months back with the help of this group.

 

[Hiball]

Was this a New Jack purchase or rebuilt? Which company? I suspect your issue is something simple, What steps did you do when you attempted to bleed the jack?

 

[469 runner]

Wow, sounds like a free jack. Definitely worth some work. I imagine it is something very simple. Probably air in the hydraulics. Open release valve and pump about 20 times. Make sure it is full of oil. Close release and see what you get. Those Hein Werners are very good jacks. For what it worth I ordered mine online and when it arrived the vent was very loose. A little seepage but worked fine otherwise. They must be using cheap vents.

 

[Master Caution]

Was this a New Jack purchase or rebuilt? Which company? I suspect your issue is something simple, What steps did you do when you attempted to bleed the jack?

This was a new jack purchase from Coastal Tool. There was oil leakage in the shipping box so I followed the steps per the manual: open the vent and check oil level, fill, turn handle counterclockwise a half turn, pump several times, replace vent, turn handle clockwise, test operation. Is there any way that metal filings from the vent screw damaged the seals so it doesn't work?

 

[Master Caution]

Wow, sounds like a free jack. Definitely worth some work.

Apologize for the rant but right now it isn't a free jack, it is a boat anchor to me if it doesn't work. It's been more frustrating to spend time and effort and still not have a working jack. I know it is worth something, but the power unit is expensive. It is almost as much as a new jack and I would still have to work on it. Like I said, I almost want to just buy another one to get my projects underway.

 

[Hiball]

This was a new jack purchase from Coastal Tool. There was oil leakage in the shipping box so I followed the steps per the manual: open the vent and check oil level, fill, turn handle counterclockwise a half turn, pump several times, replace vent, turn handle clockwise, test operation. Is there any way that metal filings from the vent screw damaged the seals so it doesn't work?

Unlikely that any metal shavings would have immediate catostraphic failure, mainly because there is a filter on the pickup, just rule out the simple stuff, I would make sure the handle movement is transferrring to the actual release mechanism. Does the jack do anything when pumping? Or is it a complete dead stick?

 

[Master Caution]

Unlikely that any metal shavings would have immediate catostraphic failure, mainly because there is a filter on the pickup, just rule out the simple stuff, I would make sure the handle movement is transferrring to the actual release mechanism. Does the jack do anything when pumping? Or is it a complete dead stick?

The mechanism moves freely, the plunger goes down in the back. However, it doesn't feel like anything is happening when you move the handle.

 

[Hiball]

The mechanism moves freely, the plunger goes down in the back. However, it doesn't feel like anything is happening when you move the handle.

It definitely sounds like a air issue, Double check the oil level (fill to about 5/16" below the hole, don't top it off) Leave the fill vent off for now, Open the release (turn left), Pump vigorously 10 times, turn handle to the right till it stops, check oil level (add if necessary), attempt to cycle jack. If it is still a complete dead stick, with the handle turned all the way to the right, Reach down and manually pull up on the lift arm with your foot on the base. Does it stay up? Feel Resistance/Vaccuum?

 

[Master Caution]

It definitely sounds like a air issue, Double check the oil level (fill to about 5/16" below the hole, don't top it off) Leave the fill vent off for now, Open the release (turn left), Pump vigorously 10 times, turn handle to the right till it stops, check oil level (add if necessary), attempt to cycle jack. If it is still a complete dead stick, with the handle turned all the way to the right, Reach down and manually pull up on the lift arm with your foot on the base. Does it stay up? Feel Resistance/Vaccuum?

I'll try again and see what happens however, I did try to lift the arm manually previously. I felt resistance but I think it was the tension springs. After I pulled it up, some fluid leaked out. Upon releasing it, it went down to about 2-3 inches above the bottom. I had to release the pressure with the handle to lower it completely.

 

[Hiball]

I'll try again and see what happens however, I did try to lift the arm manually previously. I felt resistance but I think it was the tension springs. After I pulled it up, some fluid leaked out. Upon releasing it, it went down to about 2-3 inches above the bottom. I had to release the pressure with the handle to lower it completely.

Where did fluid leak out?

 

[Master Caution]

Where did fluid leak out?

It leaked out of the vent cap/fill port; the vent cap was not installed at the time.

 

[Master Caution]

HiBall,

I tried to bring my jack to a couple shops for repair advice, but it seems as if everyone is backed up right now. I think that I may have to disassemble and examine the power unit to see what malfunctioned. I am not sure about the breakdown procedure for this unit, so I am going to keep it for the meantime but put it on the backburner as a future project. If you can offer any advice on what to look for when I start the rebuild, it would be much appreciated. Thanks.