Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHYUNDAI1990EXCEL BASE, 2D HATCHBACK, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESMECHANICAL - HYDRAULICDISC & DRUMDISC BRAKE SPECIFICATIONS
1990 Hyundai Excel Base, 2D Hatchback, Standard
Disc Brake Specifications
1990 Hyundai Excel Base, 2D Hatchback, StandardSECTION Disc Brake Specifications
DISC BRAKE SPECIFICATIONS
| Application | In. (mm) | ||
|---|---|---|---|
| Front | |||
| Caliper Diameter | |||
| Excel | 2.126 (54) | ||
| Sonata | 2.252 (57.2) | ||
| Sonata w/4-Wheel Disc | 2.244 (57) | ||
| Disc Diameter | |||
| Excel | 9.53 (242) | ||
| Sonata | 10.118 (257) | ||
| Lateral Runout | |||
| Excel | .006 (.15) | ||
| Sonata | .004 (.10) | ||
| Parallelism | |||
| All Models | .0006 (.015) | ||
| Original Thickness | |||
| Excel | .75 (19) | ||
| Sonata | .866 (22) | ||
| Minimum Refinish Thickness | |||
| Excel | .67 (17) | ||
| Sonata | .787 (20) | ||
| Disc Pad Thickness | |||
| Excel | .394 (9.0) | ||
| Sonata | .433 (11) | ||
| Sonata w/4-Wheel Disc | .368 (9.35) | ||
| Minimum Pad Thickness | |||
| Excel | 039 (1.0) | ||
| Sonata | .08 (2.0) | ||
| Sonata w/4-Wheel Disc | .03 (.8) | ||
| Rear | |||
| Caliper Diameter | 1.496 (38) | ||
| Disc Diameter | 10.354 (263) | ||
| Lateral Runout | .005 (.13) | ||
| Parallelism | .0006 (.015) | ||
| Original Thickness | 472 (12) | ||
| Minimum Refinish Thickness | .413 (10.5) | ||
| Disc Pad Thickness | .335 (8.5) | ||
| Minimum Pad Thickness | .03 (.8) | ||
| Master Cylinder Diameter | |||
| Excel | .875 (22.22) | ||
| Sonata | 1.0 (25.4) | ||
| Sonata w/4-Wheel Disc | 1.024 (26) | ||
| Parking Brake Disc Drum | |||
| Maximum Refinish Diameter | |||
| Sonata w/4-Wheel Disc | 7.283 (185) | ||
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.