JCB 3CX-4 Sitemaster 1989 Dipper Ram seal replacement

[cjbjcb]

Hi All
I am currently planning to replace the seals on the dipper Ram on the above JCB 3CX-4 Sitemaster . From the workshop manuals (which I was kindly able to download from the forum, thank you) I have identified the spade parts, (I think) however I am not able to locate A RAM Protection sleeve. I think the Ram is 100mm x 60MM and the sleeve i require is 892/01021.
Would anyone happen to know where I can get one of these or indeed is it possible to do the replacement with out it or lastly potentially fashion something to do th same job. As i dont wish to remove the piston until i am reasonable certain of what i ma doing and advice would be greatly appreciated.
thanks, Conor

[Jeremy Rowland]

Hi Conor, welcome to the forum we have a few resident JCB experts on here that should be able to point you in the right direction.

Jeremy

[cjbjcb]

Much appreciated, thanks Jeremy

[gecko.cx]

Am I correct in thinking this sleeve protects the nut seals from the threads (and acts as a lead-in for the seals)?

Several solutions I have used in the past include:

- A layer of stretchy insulation tape carefully wound on tight so the edges butt up to each other, but don't overlap will protect from the threads.

- A sheet of shim* wrapped around the thread provides a lot of protection. Cut the width of the shim to the circumference of the thread and roll the shim around a form slightly smaller that the thread so it needs to stretched to get it on. That way it'll hold on reasonably well.

* by "shim", if you have some on hand, great, but otherwise a drink can will serve perfectly well.

- A thin walled heatshrink makes a great protection layer. 70diam (110mm when flat) tube is hard to find, but is used by battery pac rebuilders (when your cordless drill etc. needs a new set of cells).