Blackhawk 2 ton floor jack

[KYMISTWALKER]

Hello, if this is in the wrong place I apologize, I have a black hawk 2 ton floor jack, it’s full of fresh jack oil, it leaks down slowly, Should I tear it apart and do a O-ring repair kit or seal kit for this model, do you have a part number for me, thank you

 

[TeenagerThatLikesFloorjac]

My guess would be the bypass valve screw loosened up over the years. It is probably something else if it slowly leaks down with the minimal weight you added in the pictures. If you added fluid, I assume it leaks fluid on the floor?

Here is a parts breakdown for your jack:

https://www.hcrcnow.com/uploads/drawings/Blackhawk_B67424_Hydraulic_Service_Jack_2_Ton.pdf

also a rebuild kit:

Blackhawk Seal Kits | Model #67424 | Lazzar's Floor Jack Repair Parts | Lazzar's Floor Jack & Hydraulic Cylinder Repair Center

Lazzar's Floor Jack & Hydraulic Cylinder Repair Center sells seal kits and repair parts. Looking for the Blackhawk Seal Kits 67424? We have it!

www.hcrcnow.com

General guide for rebuilding:

https://www.hcrcnow.com/images/faqs/rebuild-import-jack-2.pdf

 

[Hiball]

I like how Marc stole my tutorial and markets it as his own via his website. I guess I wasn’t clear enough when he asked for permission to use it and I told him No.

@OP Tear it down, more than likely the Ucup is breaking down.

 

[ajchien]

Original rebuild guide thread here:

Overseas Jack Rebuild Help Tutorial.

Well after numerous requests ive decided to put together a tutorial that will assist you do it yourselfers resurect/maintain your Taiwan Jack. This tutorial will cover the Main version of these jacks and i will try to include any variances that you might encounter. Again your jack might be...

www.garagejournal.com

 

[GilbertoS374]

Over the years, I've owned a number of hydraulic jacks. Almost all hydraulic jack leaks or malfunctions can be traced back to the o-rings in the hydraulic cylinder. In terms of repair costs, the actual parts are typically under $10, but the repair time is lengthy because you will need to disassemble the jack's hydraulic cylinder, if possible, to determine which o-ring or rings are leaking and replace them. After that, refill and bleed. If it's an old jack from before 1990, you might be able to repair it. The most important thing to remember is that you should don't ever trust a hydraulic jack that lacks mechanical lockup, which nearly all lower-end models lack.

 

[KYMISTWALKER]

Thank you, I’m going to tear it apart in a few days.