Front Brake Disc; Disc Runout Inspection; Disc Thickness And Parallelism - Honda Civic 1998 Service Manual

Front Brake Disc
Disc Runout Inspection
t .
4 ,
Loosen the front wheel nuts slightly, then raise the
vehicle, and support it on safety stands. Remove
the front wheels.
Remove the brake pads (see page 19-8).
I n s p e c t t h e d i s c s u r f a c e f o r d a m a g e a n d c r a c k s .
Clean the disc thoroughly and remove all rust.
Use wheel nuts and suitable plain washers to hold
the disc securely against the hub, then mount a dial
i n d i c a t o r a s s h o w n , a n d m e a s u r e t h e r u n o u t a t
'10 mm (0.4 in) from the outer edge of the disc.
Brake Disc Runout:
Service Limit 0.10 mm {0.00,1 in)
W{EEL NUT AND
PLAIN WASHER
108 N.m
(11 kgf.m,80lbtft)
lf the disc is beyond the service limit, refinish the
brake disc 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 approved for this operation.
M8x. Retinish Limit 19.0 mm (0.75 inl
NOTE: A new disc should be refinished if its runout
is greater than 0.10 mm (0.004 in)
1 9 - 12
Disc Thickness and Parallelism
Inspection
1 . Loosen the front wheel nuts slightly. then rsise the
vehicle. and support it on safety stands, Remove
the front wheels.
Remove the brake pads (see page 19-8).
U s i n g a m i c r o m e t e r , m e a s u r e d i s c t h i c k n e s s a t
eight points, approximately 45" apart and 10 mm
(0.4 in) in from the outer edge of the disc.
Brake Disc Thicknsss:
Standard: 20.9 - 21.8 mm {0.82 - 0.86 in)
Max. Refinishing Limil: 19.0 mm (0.75 in)
NOTE: ReDlace the brake disc if the smallest mea-
surement is less than the max. refinishing limit.
Erake Di3c Parallelism: 0.015 mm 10.0006 inl max.
NOTE: This is the maximum allowable difference
between the thickness measurements.
lf the disc is beyond the service limit for parallelism,
refinish the brake disc with an on-car brake lathe.
The Kwik-Lathe produced by Kwik-Way Manufac-
turing Co. and the
"Front Erake Disc Lathe" offered
by Snap-on Tools Co. are approved for this opera-
t r o n .
NOTE: See section 18 for brake disc replacement.