Hello,
This is how I do it...
I would overhaul both calipers...
I've just done both front calipers on my V6. It's worth changing the slide pin rubbers if there is any sign of the rubber failing (cracking). Some overhaul kits come with these.
You'll need at least the following:
Land Rover Freelander 1 Front Caliper Repair Kit 01-06 All Models SEE100300 | eBay
This one is for an '01 onwards...
You'll also need brake fluid, a hose clamp (unless you are overhauling everything in the brakes..), a bleeding kit (I use an Easybleed) and possibly new bleed nipples. I personally would also change the flexible pipe sealing washers. I used these:
10 X 10MM COPPER SEALING WASHER WASHERS O.D 15mm KW110 | eBay
If you are looking to renew all of the brake fluid then expect to find the rear bleed nipples to be rusted in solid. If you are doing "everything" and can actually remove the existing ones then I would replace them with new longer ones.. (makes life a lot easier when bleeding).
Anyway, back to the front calipers.
Remove the wheel and the pads. If reusing the existing ones, mark them so you can replace them the same way round.
A little assistance is useful next.. Pump the pedel to push the piston out as far as possible.. I can't remember if this will pop the piston right out as I had removed the disks from mine.. If the piston pops out, clamp off the flexible hose to minimise fluid loss.
Now undo the brake hose union, the caliper bolts and also the slider pins (the smaller bolt head size). Remove unit from car and place on bench.
Clean the crud off... Remove the piston and the dust seal. If the piston is still tight (it probably will be) then **gently** work it out. you can use two screwdrivers in the dust seal slot.. Be very careful.. you don't want to damage the piston.
You could also apply a little pressure with something pushed through the brake union hole... I use a plastic rod. You don't want to damage the thread, union mating surface or the caliper bore. Be careful and take your time.
Now remove the fluid seal. A small hook tool or jewellers screwdriver is fine. Just be gentle. Now clean the bore and examine it closely for any damage. You will probably find it is perfectly OK. Now clean the piston. Slight corrosion can be removed with something like duraglit. Get every trace of crud off.
Clean **everything**, check and check again the the internals are spotless.
Smear the bore with a little clean (new) brake fluid. Smear the new fluid seal as well and place it in its recess in the bore. Check that it is not twisted. Smear the piston with a little brake fluid and place it on the bench with the groove uppermost (like a cup).
Push the dust seal onto the piston and slide it down towards the bottom of the piston. Don't worry about locating it in the piston groove yet...
Pick up the piston and slide the rubber seal further down towards the bottom of the piston. You want the outer lip to be lower than the bottom of the piston.
Hold the caliper in one hand, the piston in the other and bring the piston towards the bore... hold it just above the bore so that outer lip on the dust seal is close to the groove above the bore. Tilt the piston slightly so that a portion of the lip enters the groove.. now while slowly rotating the piston, return it to the upright position.
With a little luck, the outer lip will "pull into" the groove. You will probably have to attempt this several times until you get the "knack". You **WILL** end up swearing at it but you will get there in the end. Now **gently** push the piston into the bore. You will feel resistance but don't force it. If it goes off centre and jams, remove it and start again. Push the piston fully into the bore. The dust seal inner lip should now locate into the groove in the piston.
You are now ready to refit. I use a little copper grease behind the pads and on the pad sliders. The overhaul kit will probably have some silicon grease with it. Lubricate the slider pins with this. I think that the longer pin (with the plastic anti-rattle bit) goes in the lower caliper hole...
If you want any help with the brake bleeding procedure then just ask here...
Hope this helps..
Bodge99