Mazda MX-5 1990 Workshop Manual page 796

TO
TECHNICAL DATA
Item Specifications
Type Disc
Thickness of pad mm (in)
Standard 9.5 (0.37)
Limit 1.0 (0.04)
Front brake
Thickness of disc plate
Standard 18.0 (0.71)
(Disc)
mm (in)
Limit 16.0 (0.63)
Disc plate runout mm (in)
0.1 (0.004) max.
Wheel cylinder bore mm (in) 51.1 (2.01)
Type DISC
Thickness of pad
mm (in)
Standard 8.0 (0.31)
Rear brake
Limit
1.0 (0.04)
(Disc)
Thickness of disc plate
Standard
9 (0.35)
mm (in)
Limit 7 (0.28)
Wheel cylinder bore
4
mm (in) 31.75 (1.25)
Parking brake
Lever notches
5-7
[Pulled at 98 N (10 kg, 22 Ib)]
Type Single diaphragm
Diameter mm (in)
214 (8.0)
When vacuum applied to the unit is
Power brake
Push rod-to-piston clearance mm (in) approx. 500 mmHg (19.7 inHg)
unit
0.1-0.3mm (0.004-0.012 in)
1,079-1,177 (11-12,156-171)/196 (20,44)
Fluid pressure per treading force at 0 mmHg (0 inHg) min.
kPa (kg/cm
2
,
psi)/N (kg, Ib)
5,199-5,494 (53-56, 754-796)/196 (20,44)
at 500 mmHg (19.7 inHg) min.
Rear wheel
Type PBV
hydraulic
Bend portion (Rear brake pressure)
2,943 (30, 427)
control system
kPa (kg/cm
2
,
psi)
Q.
WHEELS AND TIRES
-
Type
Item
Standard
Temporary spare
--
Size 14 x 5
1/2-JJ 14 x 4T
Wheel
Offset mm (in) 45 (1.77)
Pitch circle diameter mm (in)
100 (3.94)
Material
Aluminum alloy
Steel
Tire
Size P185/60R14 82H
T115/70D14
Air pressure kPa (kg/cm
2
,
psi) 177 (1.8, 26) 412 (4.2, 60)
Runout limit
I
Horizontal 2.0 (0.079)
Wheel and tire
mm (in)
I
Vertical
1.5 (0.059)
Maximum unbalance
10 (0.35)
(at rim edge) g (oz)
R.
SUSPENSION
Item Specifications
Front suspension
Type
Dou ble-wish bone
Stabilizer
Type
Torsion bar
Diameter
mm (in) 19 (0.75)
Shock absorbers Cylindrical double-acting, low-pressure gas charged
Identification color
Red
Wire diameter mm (in)
10.8 (0.43)
Coil springs
Coil inner diameter mm (in)
83 (3.27)
Free length mm (in) 282.5 (11.12)
Coil number
5.91
TO-10