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1、Klass.-Nr./Class No. 8J B0 0 April 2005 Hydraulic Brakes Requirements TL 901 Konzernnorm Descriptors: brake, hydraulic, leak tightness, storage D Page 1 of 4 Fachverantwortung/Responsibility Normung/Standards (EZTD, 1733) EFBB/3 Krauss Tel:-78716 NE-F/V2 Niediek Tel: -22921 Klemp Tel: +49-5361-9-753
2、57 Sobanski Confidential. All rights reserved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volkswagen Group. Parties to a contract can only obtain this standard via the B2B supplier platform “”. VOLKSWAGEN AG Norm vor Anwendung
3、auf Aktualitt prfen / Check standard for current issue prior to usage. Form FE 41 - 01.05 Changes The following changes have been made as compared to Technical Supply Specification TL 901, 2002-09: Section 2 “As-received condition” changed Standard editorially revised Previous issues 1957-09; 1959-1
4、2; 1960-12; 1962-04; 1963-05; 1963-09; 1964-02; 1965-01; 1966-02; 1966-09; 1968-03; 1969-10; 1971-07; 1972-03; 1972-09; 1973-03; 1974-04; 1976-06; 1977-10; 1978-07; 1980-09; 1981-11; 1983-10; 1989-09; 1991-04; 1991-11; 1993-03; 2000-12; 2002-09. 1 Scope This standard defines the requirements for par
5、ts in the hydraulic brake system. 2 Design According to drawing; deviating requirements called out in drawings take precedence over this TL standard. Deviations in the single part TL standards take precedence over this TL standard. 3 Description Brake according to TL 901 4 Requirements 4.1 As-receiv
6、ed condition Parts shall be free from impurities and damage. Residues/films of auxiliary processing means based on hydrocarbons (mineral oils/synthetic oils) or natural oils and their related derivatives shall not be permitted. Open holes and ports shall be individually sealed. The fitting or remova
7、l of seals must not permit any fluff, chips or other particles to enter into the brake line system. In order to ensure that the system can be filled under vacuum, the parts shall be supplied free from brake fluid, test fluid or mounting fluid. A film of fluid is permissible. Parts subjected to life
8、testing or burst pressure testing shall be scrapped. The English translation is believed to be accurate. In case of discrepancies the German version shall govern. Page 2 TL 901: 2005-04 D 4.2 General requirements Approval of first supply and changes according to Volkswagen standard VW 011 55. Enviro
9、nmental requirements according to VW 911 00 shall be fulfilled. Hydraulic brakes shall fully satisfy the applicable requirements specified in national regulations, in particular FMVSS 106, 116, 135 (USA), D 71/320/EEC (EC), R 13, R 13H (ECE), insofar as these parts are intended for export to countri
10、es in which compliance with these regulations is required by law. 4.3 Mandatory documentation Sections marked with a documentation bar are subject to mandatory documentation. The documents shall be kept on file for 15 years. 4.4 Corrosion resistance of metal parts Surface protection acccording to VW
11、 137 50 (see drawing) 5 Function All individual parts or units shall pass the following tests. 5.1 Leak tightness of parts subject to operating pressure Before and after the endurance test, a pressure drop of 10 bar is permitted after a pressure duration of 2 min. Pressure load 200 bar absolute Dura
12、tion of pressure 2 min 5.2 Vacuum leak tightness (release test) Standard production monitoring shall be carried out when filling the system. All parts and the ASSY must display vacuum resistance. The maximum permitted pressure increase for the entire brake system ASSY shall be 2 mbar after 20 s. Thi
13、s value must be lowered accordingly for individual parts. Test temperature (23 5) C Pressure load (2.5 0.5) mbar absolute Holding time 2 min Test bay According to Test Specification PV 3218 6 Burst pressure (release and first-sample testing) The ASSY and all individual parts of the pressure system s
14、hall withstand a pressure load of 353 bar absolute pressure. Page 3 TL 901: 2005-04 D 7 Strength For light alloy components TL 825 22 For cast-iron (gray cast iron) components TL 825 21 8 Storage of brake units and rubber parts For maximum storage times from date of production to date of installatio
15、n, see Table 1. Table 1 Max. storage times for Components original equipment spare parts Wheel brake cylinder Proportioning valve Brake caliper Pressure regulating switch Vacuum non-return valve Residual pressure valve Brake hose Stop lamp switch Molded rubber parts loose and fitted Brake booster Br
16、ake master cylinder Brake line ASSY acc. to TL 823 74 Brake master cylinder ASSY with brake booster 5 years Electronic stabilization program (ESP) hydraulic unit ASSY Hydraulic brake booster, see TL 820 61 1.5 years 5 years 8.1 Storage requirements Storage area Cool, dry, free of dust Storage temper
17、ature (0 to +25) C Store brake hoses free of stress on even surfaces. Store molded rubber parts in such a way that their normal shape is not changed. Page 4 TL 901: 2005-04 D 9 Referenced standards*) TL 820 61 Brake Booster, Hydraulic TL 823 74 Brake Line ASSY; Functional Requirements TL 825 21 Brak
18、e Caliper ASSY; Requirements and Tests TL 825 22 Light Alloy Brake Caliper ASSY; Requirements and Tests PV 3218 Hydraulische Bremsanlagen (Hydraulic Brake Systems currently only available in German) VW 011 55 Vehicle Supply Parts; Approval of First Supply and Changes VW 137 50 Surface Protection of
19、Metal Parts; Surface Protection Types, Codes VW 911 00 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Policy, Specifications FMVSS 106 Brake Hoses FMVSS 116 Motor Vehicle Brake Fluids FMVSS 135 Light vehicle Brake Systems 71/320/EEC Braking Devices for Certain Categories of Motor Vehicles and their Trailers ECE R 13 Braking System ECE R 13 H Passenger Car Brake Systems *) In this section, terminological inconsistencies may occur as the original titles are used.