big old Epco trolley-jack (where to start rebuild?)

Thanks for that kevins

Do you know if the sides of the jack need to be taken off to get to the gland-nuts etc?

I will be repainting it but want to make sure it's working first

It's too big for man-cave art. Needs to be functional

NB it's going to be in Violet Hammerite (discontinued colour)

First step should be cleaning it, hydraulics and dirt don't play well together.
Check oil condition and level,
Then test to see where the fault is,
Since it lifts ok, the pump must be working
To creep down under load, the most likely culprits will be the one way valve or the lowering valve, the other alternative is the seal on the lifting ram
Make sure the lowering valve is fully closing
Try to force ang dirt out ove the vaves, by taking it to maximum, then pump some more to open the presure relif valve.
Next place a load on it and let it down rapidly to flush the lowering valve
If it still creeps under load, then is the time to start pulling it apart
Ttfn Glenn

Sounds like sound advice 93fxdl

Thanks