How can I tell if my Shim is off?
How can I tell if my Shim is off?
To shim well, one must look at the FID and/or the spectrum, not just the lock level. Getting an idea what these indicators look like when certain shims are off is very helpful.
Why are lower order shims easier to Shim?
Although each shim produces several harmonics, making life miserable for the shimmer, each shim is contaminated by lower order shims of the same parity (z3is mostly contaminated by z, and z4by z2, etc). This makes it easier to find effective shimming strategies. To shim well, one must look at the FID and/or the spectrum, not just the lock level.
How much compression does a shim need to have?
You can calculate approximately from a quarter to half a thousandths of an inch (0.00025-0.0005″) compression for each airspace under the foot. If you have three shims, you will have four air spaces: Between the underside of the foot and the first shim; between the first and second shim; second and third shim; and third shim and mounting surface.
Why are shim coils so difficult to use?
Design or manufacturing flaws in the shim coils, shim coils not perfectly positioned, etc, all contribute to mixing of shims. If you extrapolated this example to three dimensions and 28 shims (on our systems), you can see why shimming is so difficult. Manual Shimming
Why do you need an alignment Shim for your car?
An alignment shim can help you correctly align certain parts of your vehicle’s suspension. Alignment shims allow you to put a solid metal spacer between two parts, or a part and the frame of your vehicle. This creates more separation and can help with the alignment of wheels or other suspension parts.
What happens if you remove a brake Shim?
They go in between the middle of the brake calipers and brake pads. If a brake shim were to become damaged or removed, then too many imperfections would exist between the rotors and pads. This would cause them to clang together and make strange noises.
Where do the shims go between the brake pads?
These anti-squeal shims are either adhesive or non-adhesive pads made of either rubber or metal. They go in between the middle of the brake calipers and brake pads. If a brake shim were to become damaged or removed, then too many imperfections would exist between the rotors and pads.
