i need pad shims in front brakes on a pathfinder 1995
between the starter and what it is bolted to
YEP!
Brake squeal or whistle is Vibration, from forcing the fixed pad against the rotating rotor. Metal shims and lubrication on the backing of the pads allow for this vibration greatly reducing noise. A tight fit between pads and their mountings is also important as is the material of which the pad is made. Most annoying brake noise may be traced to lack of shims, lubrication, loose fit or brake pads not meeting the OEM standards.
'Shims' are more often called anti-rattle clips when used with automotive disc brakes. This is because as the brakes are used the clearance behind the brake pad increases and allows the brake pad to vibrate and cause a squealing, sqeaking , etc. If clips or shims where used, or are included with your replacement brake pads, do use them.
Put the car on jack stands and remove the wheels. Locate the calipers and brake pads and remove the pins and clips from the calipers. Slide out the old brake pads and push the piston back to make room for the new pads and shims. Slide in the new pads and shims and put the pins, clips and cotter pins back in. The front and rear replacement process are very similar, but have different pads and shims.
Shims are flat pieces of metal or wood that are used to adjust for any height differences between the piers and their contact with the desired height of the beam.
Check for bent brake backing plate or anti-rattle clips, abutment clips, or pad shims that are broken, bent, missing, or slightly out of position.
Usually they are just used to prevent brake noise (squeaking etc.) I was told that the shims should be used to set space tolerances between pads and rotor, if so, at what measurement? I have no idea!
It may be the brake pads moving slightly inside the calipers. If the noise also happens when going over bumps, check the shims.
It is the same as any disk brake pad replacement. You will need a set of key wrenches to remove the brake cylinder that holds the pads. These keys are available in most hardware stores for like $10 - I use the tyupe that fits into a 1/4" socket wrench. Everything is the same - one thing i would recommend is to get a brake part grease to put on the moving parts (NOT ON THE BRAKE ROTORS OR THE BRAKE PADS) but on the metal moving parts and moving metal shims perpendicular to the rotor. Brake pads are available in most auto parts stores......you can get Bendix or toher better brand.
Put the car on jack stands and remove the wheels. Locate the calipers and brake pads and remove the pins and clips from the calipers. Slide out the old brake pads and push the piston back to make room for the new pads and shims. Slide in the new pads and shims and put the pins, clips and cotter pins back in. The front and rear replacement process are very similar, but have different pads and shims.
There are several shims that could be used such as starter shims (for adjusting drive gear to ring gear), caster/camber shims (for front end alignment), body shims (for aligning body panels),