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Sorry I can't answer your question directly but it is worth noting the sizes of nuts and bolt heads exposed to the weather or extreme heat for a while usually do not stay the original size indefinitely but reduce in increments requiring a variety of different sizes of wrench in order to obtain a sufficiently good fit. Corrosion over 15 years could reduce the size of a ball joint nut by a couple of millimetres.
When tackling such jobs it is wise to be prepared...
a 7 mm hex head wrench for the caliper bolts. the nut that holds the bearings in place is usually a 1 inch or 1 1/16 inch, but a pair of pliers should be enough to take the nut off after the cotter pin is removed. when you put the nut back on DO NOT over tighten it or you will damage the wheel bearings.
It requires a special size that comes as a socket type from the parts store. I believe is is a TORX 45. But, usually you can fit and allen wrench into the torx hole to remove them. I have used 5/16",3/8",8mm and 9mm allens to do the job on various vehicles and it worked out great.
Hope that helps!...Mike
The caliper guide pins will usually have either a 3/8 inch or a 5/16 inch allen head bolt. If the brake calipers are found to have phenolic pistons then it would be advisable to change them with calipers that have metal pistons.
they should be 3/16" but if you want to be sure, take a quarter inch wrench and put the open end over the line if it is sloppy on the line it is 3/16" , if it fits nicely, it is 1/4" . that is the only two sizes they could of used.
You will also need 5" clamp, screw type to compress calipers, be careful to slightly loosen the bleed screw while doing so or ABS system could be adversly affected. Allen wrench should be a 5/16 but the sell just a single wrench to do the job if it a bigger size. You will also need to figure out how to remove the allen head bolt, I use box end wrench on the allen wrench to torque long end down.