Hi, I have just acquired a 4x4 and I need to change all discs and pads. Can anyone tell me if you need a caliper rewind tool for 4x4 and if so is it clockwise or anticlock? Also, does anyone know what size drift pin is required for the pads? I'd prefer to know before I discover for myself and find I have to go and find the tools with the car in bits! Thanks.
General Changing discs, 4x4
- Thread starter gorblimey
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General Changing discs, 4x4
doctorchris
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Piston wind-back tool is required for rear discs, I think it needs to be turned clockwise but it is a couple of years since I did the job.
Since you are replacing all the discs you will need to remove the calipers, in which case you can slip out the old pads and insert the new ones. There are no pad retaining pins on the 4x4 which has floating calipers.
Since you are replacing all the discs you will need to remove the calipers, in which case you can slip out the old pads and insert the new ones. There are no pad retaining pins on the 4x4 which has floating calipers.
Clockwise both sides. I bought a proper wind-back tool. OK, cost £20, but made it so easy. Best not to push the fluid back into the system: better to clamp the brake hose and open the bleed screw while pushing pistons back.
Pads are removed by taking out the lower bolt on the back of the caliper, then hinging upwards to release the pads. 13mm I think. Front ones have a retaining 'flat' section on the rod the bolt goes into that locks into a cut out on the caliper, so easy to undo. Rears: you need to hold the rod in the caliper still by using a spanner on a flat area (revealed by moving the rubber gaiter slightly) while loosening the bolt. A bit more tricky to do than the fronts unless you have the luxury of a car lift/ramp. Even then, did fronts (discs and pads) in under 40mins and under an hour for the rears. Remove both lower and upper bolts to remove the sliding caliper and hang this on the spring using a cable tie to prevent straining the pipes. Then two large bolts secure the fixed part to the hubs. Lower bolt on fronts was a bit tricky to access as suspension tie rod is in the way - need a short extension to clear this, but not too long as the bolts are very tight (longer bar= slips off)
Discs are easy to remove, but some people have found the disc retaining bolts (2 off, which double as the locating studs to line up the wheels) can be tricky to loosen. Best to use a deep socket over them (12mm I think) and go gently. A dab of Copperslip on the threads when putting them back makes it easier for next time too.
Rears discs are 240mm, solid and 11mm which is same as 100HP and also some Alfa models so easier to obtain at motor factors - my local place had them in stock. Front discs can be more difficult to obtain -- they are 240mm diameter and 20mm thick, and ventilated too, which is different from all the other Pandas. These took a couple of days to come in on special order.
Pads are removed by taking out the lower bolt on the back of the caliper, then hinging upwards to release the pads. 13mm I think. Front ones have a retaining 'flat' section on the rod the bolt goes into that locks into a cut out on the caliper, so easy to undo. Rears: you need to hold the rod in the caliper still by using a spanner on a flat area (revealed by moving the rubber gaiter slightly) while loosening the bolt. A bit more tricky to do than the fronts unless you have the luxury of a car lift/ramp. Even then, did fronts (discs and pads) in under 40mins and under an hour for the rears. Remove both lower and upper bolts to remove the sliding caliper and hang this on the spring using a cable tie to prevent straining the pipes. Then two large bolts secure the fixed part to the hubs. Lower bolt on fronts was a bit tricky to access as suspension tie rod is in the way - need a short extension to clear this, but not too long as the bolts are very tight (longer bar= slips off)
Discs are easy to remove, but some people have found the disc retaining bolts (2 off, which double as the locating studs to line up the wheels) can be tricky to loosen. Best to use a deep socket over them (12mm I think) and go gently. A dab of Copperslip on the threads when putting them back makes it easier for next time too.
Rears discs are 240mm, solid and 11mm which is same as 100HP and also some Alfa models so easier to obtain at motor factors - my local place had them in stock. Front discs can be more difficult to obtain -- they are 240mm diameter and 20mm thick, and ventilated too, which is different from all the other Pandas. These took a couple of days to come in on special order.
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Good quality ones can be had fairly cheaply (IMHO for brembo discs)
Here for fronts -> http://www.bremboshop.co.uk/brembo-...4-12i--2004-front-discs-09861610_p4132554.htm
Here for rears -> http://www.bremboshop.co.uk/brembo-original-fiat-500-12i--2007-front-discs-08508514_p4132388.htm
They have stock too
Here for fronts -> http://www.bremboshop.co.uk/brembo-...4-12i--2004-front-discs-09861610_p4132554.htm
Here for rears -> http://www.bremboshop.co.uk/brembo-original-fiat-500-12i--2007-front-discs-08508514_p4132388.htm
They have stock too
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