Front Brake Disc; Thickness And Parallelism - Honda Prelude 1993 Service Manual

Front Brake Disc
Runout lnspection
Loosen the front wheel lug nuts slightly, then raise
the car and support on safety stands.
Remove the front wheels.
2.
Remove the brake pads (see page 19-7).
3. Inspect the disc surface for cracks, and rust. Clean
the disc thoroughly and remove all rust.
4. Use lug nuts and suitable plain washefs to hold the
disc secu.ely against the hub, then mount a dial in-
dicator as shown and measure the runout at IO mm
(O.4 inl from the outer edge oJ the disc,
Brak6 Disc Runout:
Scrvlc. Limlt: O.10 mm (0.004 in)
5. lf the disc is beyond the service limit, refinish the
rotor with an on-car brake lathe. The Kwik-Lathe
produced by Kwik-Way Manufacturing Co. and the
"Front Brake Disc Lathe" offered by Snap-on Tools
Co. are appfoved for this operation.
MEx. Refinishing Limit: 21.0 mm (0.83 in)
NOTE: A new disc should be retinished if its
runout is greater that O. l O mm {O.OO4 in}.
Thickness and Parallelism
2 .
Inspection
Loosen the front wheel lug nuts slightly, then raise
the car and support on safety stands.
Remove the front wheels.
Remove the brake pads (see page 19-7).
Using a micrometer, measure disc thickness at
eight points, approximately 45o apart and 1O mm
(O.4 in) in trom the outer edge of the disc.
Brako disc thickness:
Standard: 23.O mm {0.91 inl
Brako Disc Parallelism: O.O15 mm (0.00OO in) mar.
NOTE; This is the maximum allowable difference
between any thickness measurements.
lf the disc is beyond the service limit for parallelism,
refinish the rgtor with an on-car brake lathe. The
Kwik-Larhe produced by Kwik-Way Manufacturing
Co. and the "Front Brake Disc Lathe" offered by
Snap-on Tools Co. are approved for this operation.
Max. R€finishing Limit: 21.O mm (0.83 in)
4 .
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