[Peter Milnes]

Your best bet is the Green Book which will cost you £30 from your dealer. Perusing the archives should turn up several messages on how to obtain the Green Book with the correct part number. Careful investigation should give you a pointer as to how to do this. Basically undoing the busbar nut (loosening but not removing) should enable the correct spanner to be fitted to the body nut. With spanner in place slip a noose of string over the plug insulator. This should stop it falling when fully loosened from the head. It should then be easy to remove the glow plug. It should then be possible to (using spanner and pressure from a finger to fit the new glow plug. No 5 is removed/replaced in a similar way but using the busbar (with loosened top nut) to hold the plug as it is removed. Transferring the busbar to the new plug will facilitate replacing it.

It would, of course be better to test the plug's resistance before attempting to remove it. It should read about 1.3 Ohms if good and will nearly always read quite high when knackered. Obviously a good Ohmmeter is essential.

My 5 & 6 are due for replacement which will be done when the Cam and Pump belt are changed which gives a little more room to reach them.

All the best, Peter