Question about Sears jack 328 series.

[mahooper84]

I have a question about replacing the plunger seal in my sears 328.12001 floor Jack... This Jack was given to me but it will not stay up at all, even with no weight on it. I've tried to bleed and refill the oil and the problem still exists. My next thought is to replace the plunger seal because it appears to be leaking a tiny bit. I'm trying to avoid an entire rebuild/seal kit replacement and just find the faulty seal and deal with it. My question is, do I have to tear the whole thing down just to replace the plunger seal, or is it possible to just take the plunger out and do it that way? Any help is appreciated, thanks.

 

[BOHICA8]

You may be able to locate information you are seeking at the website below. The site has a downloadable file for the 328 series jack.

Home | Lazzar's Floor Jack & Hydraulic Cylinder Repair Center

Lazzar's HCRC is a leading supplier of repair parts and seal kits for floor jacks, air hydraulic pumps, hand pumps and rams. We also sell Metric and Standard Seals.

www.hcrcnow.com

 

[Stuart in MN]

Here's an older discussion about repairing that specific jack, it's in three parts:

SEARS Floor Jack 1.5 Ton Model# 328.12001 (Part 1 of 3)

After searching the web for rebuild parts for this jack, I found Hiball's write-up on rebuilding imports. It was very helpful before I ripped mine apart. Since identifying a supplier for a rebuild kit was the biggest problem, I figured I'd share my learnings for everyone else who owns one of...

www.garagejournal.com

SEARS Floor Jack 1.5 Ton Model# 328.12001 (Part 2 of 3)

Next set of files

www.garagejournal.com

SEARS Floor Jack 1.5 Ton Model# 328.12001 (Part 3 of 3)

Last set of files!

www.garagejournal.com

Also, here's a general discussion about rebuilding overseas made jacks, many of them are the same thing or nearly so.

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

 

[mm08822]

If your situation is like mine was, all that was needed was to replace the piston rod seal and piston end cap o-ring.

Make sure all pieces of the old seal removed from the tube.

The piston rod nut required a pipe wrench with breaker bar to loosen. Protect the nut with thin material so you don't leave teeth marks. Try thin sheet metal taped to wrench jaws.