INHALT

Regulation No 90 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of replacement brake lining assemblies and drum brake linings for power-driven vehicles and their trailers

Regulation No 90 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of replacement brake lining assemblies and drum brake linings for power-driven vehicles and their trailers
1. SCOPE
2. DEFINITIONS
3. APPLICATION FOR APPROVAL
4. APPROVAL
5. SPECIFICATIONS AND TESTS
5.1. General
5.2. Performance requirements
5.2.1. Replacement brake lining assemblies for vehicles of categories M
1
, M
2
and N
1
5.2.2. Replacement brake lining assemblies and replacement drum brake linings for vehicles of categories M
3
, N
2
and N
3
5.2.3. Replacement brake lining assemblies for vehicles of categories O
1
and O
2
5.2.4. Replacement brake lining assemblies and replacement drum brake linings for vehicles of categories O
3
and O
4
5.2.5. Replacement brake lining assemblies for vehicles of category L
5.3. Mechanical characteristics
5.3.1. Replacement brake lining assemblies for vehicles of categories M
1
, M
2
, N
1
, O
1
,O
2
, and L
5.3.2. Replacement brake lining assemblies and replacement drum brake linings for vehicles of categories M
3
, N
2
, N
3
, O
3
, and O
4
5.3.2.1. Shear strength
5.3.2.2. Compressibility
5.3.2.3. Material hardness(6)
6. PACKAGING AND MARKING
7. MODIFICATIONS AND EXTENSION OF APPROVAL OF THE REPLACEMENT BRAKE LINING ASSEMBLY OR THE REPLACEMENT DRUM BRAKE LINING
8. CONFORMITY OF PRODUCTION
9. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
10. PRODUCTION DEFINITELY DISCONTINUED
11. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS
12. TRANSITIONAL PROVISIONS
ANNEX 1
COMMUNICATION
(Maximum format: A4 (210 × 297 mm))
ANNEX 2
ARRANGEMENTS OF THE APPROVAL MARK AND APPROVAL DATA
(See paragraph 4.7 of this Regulation)
Example of pad assembly marking
Example of shoe assembly marking
Example of drum brake lining marking
ANNEX 3
Requirements for replacement brake lining assemblies for vehicles of categories M
1
, M
2
and N
1
1. Conformance with Regulation No 13
1.1. Vehicle preparation
1.1.1. Test Vehicle
1.1.2. Bedding (burnishing) procedure
1.1.2.1. General conditions
1.1.2.2. Procedure
1.1.2.3. Performance check
1.2.1. Service braking system
1.2.1.1. Type-0 test with engine disconnected, vehicle laden
1.2.1.2. Type-0 test with engine connected, vehicle unladen and laden, according to Regulation No 13, Annex 4, paragraphs 1.4.3.1 (stability test) and 1.4.3.2 (only the test with initial speed v = 0,8 v
max
)
1.2.1.3. Type-I test
1.2.2. Secondary braking system
1.2.2.1. Type-0 test with engine disconnected, vehicle laden (this test may be omitted in cases where it is obvious that the requirements are met, e.g. diagonal split braking system)
1.2.3. Parking braking system
1.2.3.1. Downhill test at 18 per cent gradient, vehicle laden
2. Additional requirements
2.1. Vehicle test (split axle test)
2.1.1. Cold performance equivalence test
2.1.2. Speed sensitivity test
2.2. Inertia dynamometer test
2.2.1. Test equipment
2.2.2. Test conditions
2.2.3. Cold performance equivalence test
2.2.4. Speed sensitivity test
ANNEX 4
Requirements for replacement brake lining assemblies and drum brake linings for vehicles of categories M
3
, N
2
and N
3
1. Vehicle test
1.1. Test vehicle
1.2. Tests and requirements
1.2.1. Conformance with Regulation No 13
1.2.2. Additional requirements (split axle test)
1.2.2.1. Cold performance equivalence test
1.2.2.2. Speed sensitivity test
2. Inertia dynamometer test
2.1. Test equipment
2.1.1. Test conditions
2.2. Tests and requirements
2.2.1. Tests derived from Regulation No 13
2.2.1.1. Type-0 test
2.2.1.2. Type-0 test, high speed performance
2.2.1.3. Type-I test
2.2.1.3.1. Heating procedure
2.2.1.3.2. Hot performance
2.2.1.3.3. Recovery
2.2.1.4. Type-II test
2.2.1.4.1. Heating procedure
2.2.1.4.2. Hot performance
2.2.1.5. Static test for parking performance
2.2.2. Cold performance equivalence test
2.2.3. Speed sensitivity test
ANNEX 5
Requirements for replacement brake lining assemblies for vehicles of categories O
1
and O
2
1. General
2. Test equipment
2.1. Test conditions
3. Tests and requirements
3.1. Type-0 test
3.2. Type-I test
3.2.1. Heating procedure
3.2.2. Hot performance
3.3. Cold performance equivalence test
ANNEX 6
Requirements for replacement brake lining assemblies and drum brake linings for vehicles of categories O
3
and O
4
1. Test conditions
2. Tests and requirements
2.1. Conformance with Regulation No 13, Annex 11
2.2. Cold performance equivalence test (Type-0)
ANNEX 7
Requirements for replacement brake lining assemblies for vehicles of category L
1. Test conditions
2. Tests and requirements
2.1. Conformance with Regulation No 78
2.1.1.1. Type-0 test with engine disconnected
2.1.1.2. Type-0 test with engine connected
2.1.1.3. Type-0 test with wet brakes
2.1.1.4. Type-I test
2.2. Additional requirements
2.2.1. Cold performance equivalence test
2.2.2. Speed sensitivity test
ANNEX 8
Technical prescriptions for replacement brake lining assemblies intended for the use in separate parking brake systems being independent of the vehicle service brake system
1. COMPLIANCE WITH REGULATION No 13
1.1. Vehicle test
ANNEX 9
DETERMINATION OF FRICTION BEHAVIOUR BY MACHINE TESTING
1. INTRODUCTION
2. REPLACEMENT BRAKE LINING ASSEMBLIES FOR VEHICLES OF CATEGORIES M
1
, M
2
, N
1
, O
1
, O
2
, AND L
2.1. Equipment
2.2. Test procedure
2.2.1. Sample preparation
2.2.2. Test schedule
2.2.2.1. Test schedule with constant pressure
2.2.2.1.1. Pad assemblies
2.2.2.1.2. Shoe assemblies
2.2.2.2. Test schedule with constant torque
2.3. Evaluation of test results
2.3.1. Pad assemblies
2.3.2. Shoe assemblies
2.4. Acceptance criteria
3. BRAKE LINING ASSEMBLIES AND DRUM BRAKE LININGS FOR VEHICLES OF CATEGORIES M
3
, N
2
, N
3
, O
3
, AND O
4
3.1. Equipment
3.2. Test procedure
3.2.1. Sample preparation
3.2.2. Test schedule
3.3. Evaluation of test results
3.4. Acceptance criteria