Overhauling trolley jack?

[sierraman]

Got a halfords trolley jack. The slave piston is leaking, does anyone know if obtaining a new seal and fitting it is feasible? Or is it a recon job?

[Micrashed]

I know my dad did his years ago with a new seal, but unless you are Doris Stokes I dont think I can check how he did it.

[alf892]

Oswald Seals used to be great at matching seals especially if you can send the old one......and don't forget to tell them what liquid you are going to use. I think they got took over but google will tell you.

[brickwall]

I always service my bottle jacks. Dunno about trolley jacks though.

[mat_the_cat]

If the actual piston is damaged causing the leak, then I'd buy another. More expensive jacks tend to have spares back-up; certainly I've overhauled mine with all new seals for under £2. If you can match up the seals and piston is OK it should be an easy job.

[sierraman]

Whipped it apart last night. As suspected the plastic o ring that seals the master cylinder was fooked. Fortunately I'm going to give city seals and bearings a go in Rotherham. If it costs just a few quid to get it back in service then so much the better. Checked main seal on piston and its still tight, but if I can obtain a spare ill swap it.

[lisbon_road]

I remember a few years back someone saying to me that these were so cheap that you could buy them for a job and throw them out afterwards.  I think he'd found them on sale somewhere.

 

I was horrified by that, madness of modern life.  What you are doing is heroic.  Please let us know how you get on, part numbers and so on would be helpful.  I have a Halfords jack which is ok but it drops a bit faster than it should so it must be on the way out.

 

You can buy special trolley jack oil but I bet it is something very ordinary rebadged.

[sierraman]

Rang Halfords they no longer supply the overhaul kit. I will not be deterred! A 1995 edition of car mechanics details how to strip it down so... I'll keep you informed

[Bren]

I bet they offered to sell you a new one.

[sierraman]

Swapped the seal, filled with oil. Now it will lift only about an inch???

[twosmoke300]

Would need to be bled I expect

[sierraman]

Bled it. Rises an inch or so then nowt. Thinking possibly internals are bolloxed. It's cost me nowt to try at least before I give in and squander £30 on a new un...

[Minimad5]

Where are the pictures etc ??

[sierraman]

I'm trying to upload through an iPod which doesn't allow me to do this. Unless anyone can explain how I do this?