1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 1 of 7 NAVISTAR, INC. TMS (TRUCK MATERIAL SPECIFICATION) NUMBER:
2、TMS-6037 TITLE: Hydraulic Brake Hose CURRENT REV No: 0908 DATE: August 2009 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: Rev. H - June 2007 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous materi
3、als, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Replaced “I
4、nternational Truck and Engine Corporation” with “Navistar, Inc.” per corporate Directive; added Section 4.6.5 Extractables test; revised Section 5.0 on Quality; editorial changes. Reference: File 20-3 Keywords: Hose, brake hose, rubber hose 1.0 APPLICATION This specification covers two sizes (1/8“ a
5、nd 3/16“) of hydraulic brake hose and hose assemblies for use with non-petroleum based brake fluids as per SAE J1703/J1705. 2.0 SCOPE This specification covers general requirements, dimensional tolerances, property and performance requirements, designation on drawings, source approval and quality co
6、ntrol, and approved sources. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified the latest issue of all refer
7、enced standards shall apply. The following Specifications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CEMS A-37 ASTM D 380 NAVISTAR Manufacturing Std. MS-D-13 CEMS C-3 SAE J1402 CFR Title 29, Part 1910 FMVSS 106 SAE J1703 NAVISTAR CE
8、MS A-0, Pt. I ASTM D 3395 SAE J1705 NAVISTAR CEMS A-0, Pt. II ASTM D 622 SAE J1873 NAVISTAR CEMS B-50 CEMS A-40, Sect. A SAE J1401 NAVISTAR Engineering Design Standard A-16 TMS-9543 4.0 GENERAL REQUIREMENTS Product supplied to the requirements of this specification shall meet all requirements of FMV
9、SS 106 and SAE J1401. 4.1 Hose Construction 4.1.1 1/8 Inch ID Hose: The tube shall consist of a ethylene-propylene-diene terpolymer (EPDM) or a suitable blend of butyl and EPDM, suitably reinforced with 2 braids of polyvinyl alcohol yarn separated by a butyl or chloroprene friction layer and covered
10、 by an EPDM elastomer. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6037 TITLE: Hydraulic Brake Hose REVISION: 0908 This document is restricted and may not be sent
11、outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 2 of 7 4.1.2 3/16 Inch ID Hose: The tube shall consist of a chloroprene elastomer suitably reinforced with 2 brai
12、ds of rayon yarn separated by a chloroprene friction layer and covered by a chloroprene elastomer. 4.2 Fittings The fittings shall be permanently attached with brass or steel fluid connectors. 4.2.1 Brass Fittings: Unless otherwise specified, brass fittings will be made from Bar Stock, C36000, half
13、hard, or from C37700 per CEMS C-3. 4.2.2 Steel Fittings: Steel, Code 0-115, CEMS A-0, Part II. Flareless type ferrules will be steel, 1008, 1012, 1112, or 12L14 per CEMS A-0, Part I, case hardened Class 3 or Class 3A as per CEMS A-40, Section A. Stainless steel fittings shall be made from 18-8 stain
14、less steel per CEMS A-37. Crimp hose fittings do not require case hardening. 4.3 Dimensions And Tolerances - Hose shall conform to the following dimensions. Nominal ID 1/8 3/16 Inside Diameter 3.20-3.61 mm (.126-.142 in) 4.65-4.90 mm (.183 - .193 in) Outside Diameter 9.98-11.0 mm (.393-.433 in) 12.2
15、-12.7 mm (.480 - .500 in) Concentricity .50 mm (.020 in) max .635 mm (.025 in) max 4.4 Property And Performance Requirements Hose and hose assemblies shall meet the requirements of FMVSS 106 and SAE J1401, and additional requirements of this specification. All tests shall be in accordance with ASTM
16、D 380 and ASTM D 622 unless otherwise indicated. 4.4.1 3/16 Inch ID Hose - Original Properties - Shall meet all requirements indicated in Table 1. Table 1 Original Properties 3/16 dia. Hose PROPERTY TUBE COVER Tensile Strength, MPa (psi), min 10.3 (1500) 10.3 (1500) Elongation, % 225 200 Hardness, p
17、ts. 65-80 65-80 Cold Flexibility (Tube and Cover): -40 C (-40 F) Shall not crack, check, or break. Compression Set (Tube and Cover): 22 hours at 250 F 65 max 40 max Adhesion 1.4 N/mm (8 lbf/in) minimum Burst 62.0 MPa (9000 psi) min Heat Age Resistance: 70 hrs 121 C (250 F) Shall not crack, check, or
18、 break. Tensile Retention, % 80 80 Elongation Retention, % 35 60 Hardness Change, pts 25 20 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6037 TITLE: Hydraulic Brake
19、 Hose REVISION: 0908 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 3 of 7 4.4.2 1/8 Inch ID Hose - Original Pro
20、perties - Shall meet all requirements indicated in Table 2. Table 2 Original Properties 1/8 dia. Hose PROPERTY TUBE COVER Tensile Strength, MPa (psi), min 10.3 (1500) 10.3 (1500) Elongation, % 200 225 Hardness, pts. 72-87 70-87 Cold Flexibility (Tube and Cover): -40 C (-40 F) Shall not crack, check,
21、 or break. Compression Set (Tube and Cover): 22 hours at 250 F 80% max 80% max Adhesion 1.4 N/mm (8 lbf/in) minimum Burst 68.9 MPa (10,000 psi) min Heat Age Resistance: 70 hrs 121C (250F) Shall not crack, check, or break. Tensile Retention, % 90 90 Elongation Retention, % 35 50 Hardness Change, pts
22、10 15 4.5. Moisture Ingression - SAE J1873 (Using DOT 3 Fluid) 4.5.1. Required: 3/16” ID - 5.0 % maximum 4.5.2 Required: 1/8” ID - 5.0 % maximum 4.6 Impulse/Temperature Cycling 4.6.1 Equipment 4.6.1.1 Pressure Cycling Apparatus The pressure cycling apparatus shall be capable of applying a pressure o
23、f 14.7 MPa (2130 psi). It shall have automatic control of the time for the pressure apply/release cycle. 4.6.1.2 Circulating Air Temperature Chamber A circulating air environmental chamber with a suitable thermostatically controlled heating/cooling system is required to maintain temperatures of -29
24、to 80C (-20 to 175F). This chamber should be computer controlled for time and temperature. 4.6.1.3 Burst Strength Test Apparatus An apparatus conforming to the requirements described in SAE J1401 4.6.2 Test Method A The brake hose assemblies are to be subjected to pressure and temperature cycling fo
25、r a specific duration, then leak tested via a hole drilled through the coupling area. 4.6.2.1 Pressure - SAE RM 66-04 Brake Fluid - Pressure media: One pressure cycle consists of: 4.6.2.1.1 15 seconds 0-.7 MPa (0-100 psi) 4.6.2.1.2 15 seconds 14.7 MPa (2130 psi) .5 MPa (75 psi) 4.6.2.1.3 Pressure to
26、 be attained within 2 seconds 4.6.2.2 Temperature - Air circulating environmental cabinet; one temperature cycle consists of: 4.6.2.2.1 12 hours 80C 2C 4.6.2.2.2 12 hours -30C 2C 4.6.2.2.3 Temperature to be attained within 30 minutes 4.6.2.3 Test Duration Copyright Navistar International Corporation
27、 Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6037 TITLE: Hydraulic Brake Hose REVISION: 0908 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corpor
28、ate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 4 of 7 Hose assemblies are to be removed and inspected for weepage, leaks, or failure at the indicated test durations. 4.6.2.3.1 72 hours 4.6.2.3.2 144 hours 4.6.2.3.3 288 hours 4.
29、6.2.4 Leak Test Condition hose assemblies for 1 hour at room temperature prior to leak test. Drill a 2 mm (0.079“) hole through the coupling area on one end (between the crimped portion and the hex or stock area). 4.6.2.4.1 Use a burst type cabinet as outlined in SAE J 1401. 4.6.2.4.2 Use water as p
30、ressure media. 4.6.2.4.3 Apply pressure at a rate of 172.5 MPa/min. (25000 psi/minute) until assembly leaks or bursts. 4.6.3 Method B Drill a 2 mm (.079“) weep hole in each end fitting. This hole should be drilled through the cup wall at the end of the hose contacting the bottom of the cup. The hole
31、 allows the lab personnel to view leakage at an earlier time than waiting for leaking fluid to produce blisters or external signs of leakage. 4.6.3.1 Connection: Connect the hose assemblies to a pressure cycling apparatus. Place the assemblies into the temperature chamber. 4.6.3.2 Test Fluid: Fill t
32、he pressure cycling apparatus and the hose assemblies with brake fluid and bleed free of air. 4.6.3.3 Pressure: Subject assemblies to a cycling internal pressure to be obtained within 15 seconds. 4.6.3.4 Temperature: Temperature is to be changed every hour, except for the last 7 hours of the 24 hour
33、 cycle. The temperature should be changed as rapidly as possible. Temperature cycling for one days testing is shown in Table 3. Table 3 Temperature Cycle - 24 hours Cool Down Steps -12 C -18 C -23 C -29 C Heat Rise Steps -4 C 24 C Cool Down Steps -12 C -18 C -23 C -29 C Heat Rise Steps 24 C 52 C 80
34、C Ambient Temperature Temperature is allowed to return to ambient (16 C to 32 C) and pressure cycling is stopped for the remainder of the 24 hour cycle. Complete 4 Test Cycles 4.6.3.5 Inspection: The weep hole in each fitting should be inspected at 2 hour max. intervals. This will allow the time and
35、 temperature to be noted when any failure occurs. Failure is evident by weeping or leaking of brake fluid from the weep hole. Care should be taken not to confuse normal condensation with brake fluid. If the leakage is dampness or a few drops per hour, the assembly should be left on test. Normally ho
36、ses will seal up at the next cycle. A record should be kept of times and temperatures when any leakage is noted. Hoses leaking in a steady stream should be removed from the test. 4.6.3.6 End of Test: Upon failure or end of test, remove assemblies from the chamber, disconnect from the pressure cyclin
37、g apparatus, and drain the brake fluid. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6037 TITLE: Hydraulic Brake Hose REVISION: 0908 This document is restricted and
38、 may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 5 of 7 4.6.3.7 Stabilization: Stabilize the assemblies in air at room temperature for 45 minutes
39、 minimum. 4.6.3.8 Construction Test: Subject the assemblies to the construction test per SAE J1401. 4.6.3.9 Burst Test: Subject the assemblies to the burst test per SAE J1401 4.6.4 Required - Both A and B Test Methods Upon completion of Section 4.6 the hose assemblies will have passed requirements i
40、ndicated below. 4.6.4.1 Leakage: No leakage or failure after aging 4.6.4.2 Pressure: 4000 psi minimum pressure hold without any leakage. 4.6.4.3 Burst: Shall not burst at a pressure less than 5000 psi. 4.6.5 Extractables 4.6.5.1 Method Plug one end of three 12 inch hose sections (plugs shall be clea
41、n steel), fill with DOT 3 brake fluid, plug the other ends and place in a recirculating oven at 70C for 168 hours. Remove from oven and shake each sample vigorously for 30 seconds. Repeat oven exposure and shaking cycle twice. After the third cycle, remove hose sections from the oven and shake vigor
42、ously for 30 seconds and let hose sections cool to room temp. Analyze the brake fluid from each section using GC/MS and compare to fresh brake fluid. 4.6.5.2 Required Report observable changes (color, clarity, etc.). Perform analysis to determine the presence of oils and plasticizers. Contact Materi
43、als Engineering for appropriate methods and labs for this work. 5.0 QUALITY All hose supplied to this specification shall be clean and free of dirt, grease, and contamination. All rubber debris from cutting and processing will be removed. Internal release agents will be flushed from the hose. There
44、shall be no fabric or flash exposed on the ID of the hose. All hose assemblies shall be capped after final cleaning and caps retained on hose until installation on the vehicle. 5.1 Qualification Materials submitted for approval to this specification shall include the following: 5.1.1 A detailed, sig
45、ned test report documenting testing to this specification per TMS-9543. 5.1.2 The complete procedure used for preparing and curing materials for test, especially surface preparation (when appropriate) and condition of the test materials. 5.1.3 A complete description, including engineering prints and
46、 pictures of any non-standard test fixtures used. 5.1.4 Adhesive, substrate and any chemicals used for bonding where appropriate. 5.2 Submission The material test report shall be submitted to: Manager of Materials Engineering NAVISTAR, Inc. PO Box 1109 Fort Wayne, IN 46801 5.3 Approval A report from
47、 Navistar will be issued approving new materials to this specification. Formal approval is not granted until this report has been published and the new material is listed in this specification. However, the approval report may be used as authorization for usage of that approved material/process prior to a change to this specification. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6037 TITLE: Hydraulic Brake Ho
