NAVISTAR MPAPS F-6042-2016 Brake Hose Low Pressure Hydraulic.pdf
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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. 2016 by Navistar, Inc. APRIL 2016 Page 1 of 7 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS- F-6042 Former Designation: TMS-6042) TITLE: Brake Hose, Low Pressure, Hydraulic CURRENT REV No.: 1604 DATE: April 2016 WRITTEN/EDITED BY: G. Svidron APPROVED BY: R. Goluch SUPERSEDES: Rev. 1012 Dec. 2010 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION Thi
3、s specification may involve hazardous materials, 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 lim
4、its prior to use. Change Notice: Replacement for TMS 6042, Editorial changes 1.0 APPLICATION This specification covers low-pressure hydraulic brake hose suitable for use with DOT 3 brake fluid using clamped or fitted connections. 2.0 SCOPE This specification covers the general requirements, identifi
5、cation, property and performance requirements, and source approval and quality control. 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 MPAPS B-50 specification. 3.0 REFERENCE DOCUME
6、NTS Unless otherwise specified the latest issue of all referenced standards shall apply. The following specifications, standards, and regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 NAVISTAR MPAPS F-2 ASTM B 117 NAVISTAR Manufacturing Std. MS-D-13 NAVIS
7、TAR MPAPS P-9543 ASTM D 380 NAVISTAR MPAPS C-3 CFR Title 29, Part 1910 ASTM D 471 NAVISTAR MPAPS A-0, Part I and II SAE J30 ASTM D 622 NAVISTAR MPAPS G-20 SAE J526 ASTM D 3884 MPAPS B-50 SAE J1019 ASTM G 154 SAE J1873 4.0 GENERAL REQUIREMENTS 4.1 Hose Construction This hose shall consist of a smooth
8、-bore tube of non-plasticized EPDM reinforced with one ply of braided, knit, or woven rayon yarn or two-ply counter directional helically wound rayon yarn and covered by an outside layer of non-plasticized EPDM. This hose is available as either bulk, straight hose or as formed (curved) hose and may
9、be assembled with either clamps or with crimped fittings. NUMBER: MPAPS F-6042 TITLE: Brake Hose, Low Pressure, Hydraulic REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required
10、to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 2 of 7 4.2 Fittings The hose fittings shall be permanently attached ends of brass or coated steel. 4.2.1 Brass: Shall be C36000 (half hard), C34500, C35000 for bar or extruded stock or C37700 for forgings as per MPAPS C-3. 4.2.2
11、Steel: Shall meet the requirements of Code 0-115 per MPAPS A-0, Part II. Flareless type ferrules shall be made from steel meeting the requirements of Code 0-100 or Code 0-115 as per MPAPS A-0, Part II and will be zinc plated per MPAPS G-20, Class 6A. Tubing shall be per SAE J526 and will have a corr
12、osion resistant coating viable for 500 hours salt spray per ASTM B117. 4.3 Dimensions and Tolerances Unless otherwise specified, hose shall meet the dimension and tolerance requirements shown in Table 1. TABLE 1. DIMENSIONS AND TOLERANCES Nominal ID Inside Diameter Outside Diameter Inches in. (mm) i
13、n. (mm) 9/32 .281 .020 (7.16 .5) .480 .020 (12.2 .5) 5/16 .315 .020 (8.0 .5) .630 .020 (16.0 .5) 3/8 .394 .020 (10.0 .5) .709 .024 (18.0 .6) 5/8 .594 .024 (15.1 .6) .909 .024 (23.1 .6) 4.4 Property and Performance Requirements All tests shall be in accordance with ASTM D380 or ASTM D622 as appropria
14、te unless otherwise specified. 4.4.1 Original Properties Tensile Tube and Cover 8.0 MPa (1160 psi) minimum Elongation Tube and Cover 250% minimum Adhesion All Plies 2.0N/mm (11.4 lbf/in) width minimum Burst Strength All Sizes 2.0 MPa (290 psi) minimum Assembly Tensile Strength All Sizes 1.45 kN (325
15、 LB) minimum crimp only 4.4.2 Cold Flexibility 4.4.2.1 Method Perform test on unaged hose, and on brake fluid aged hose 70 hours 125 2C (257 5F); perform Cold Flexibility test per SAE J30 method for SAE30R7 hose. 4.4.2.2 Required The hose shall not show any cracks, checks, or breaks in the tube or c
16、over. Shall pass a proof test hold 1.0 MPa (145 psi) pressure for 30 seconds without leakage or failure. 4.4.3 Vacuum Collapse 4.4.3.1 Method 4.4.3.1.1 Install a 45 cm (18 in) length of hose on a test fixture. The test fixture shall hold both ends rigidly with the hose suspended between the ends. 4.
17、4.3.1.2 Measure the OD at several locations and mark these locations. 4.4.3.1.3 Heat soak hose and fixture in a forced convection oven for 4 hours at 125 2C (257 5F). NUMBER: MPAPS F-6042 TITLE: Brake Hose, Low Pressure, Hydraulic REVISION: 1604 This document is restricted and may not be sent outsid
18、e Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 3 of 7 4.4.3.1.4. While still at temperature in the oven, apply a vacuum to an absolute pressure of 3 millibars (maximum
19、 pressure) all sizes. 4.4.3.1.5 Measure the OD at the marked locations while under vacuum. 4.4.3.2 Required: Diameter shall not decrease by more than 20% during application of a vacuum. 4.4.4 Aged Properties 4.4.4.1 Method - 1 Expose hose sample for 600 hours at 125 2C (255 5F), while wrapped 180 ov
20、er a mandrel with a diameter of 10X the nominal OD. After exposure, remove and slowly straighten (taking 4 to 8 seconds). 4.4.4.1.1 Required: Sample shall show no cracks, charring or disintegration externally or internally. 4.4.4.2 Method - 2 Expose samples for 70 hours at 1252C (2555F) 4.4.4.2.1 Re
21、quired 4.4.4.2.1.1 Tube and cover: Tensile change = -20% max 4.4.4.2.1.2 Tube and cover: Elongation change = -60% max 4.4.4.2.1.3 Tube and cover: Hardness change = -5, +20 pts 4.4.5 Kink Resistance - Bulk Hose Only Same as SAE J30 for SAE30R7 hose, except as indicated in Table 2. TABLE 2 Nominal Hos
22、e ID. In. (mm) Hose Inside Diameter In. Hole Center Distance In. (mm) Hole Diameter In. (mm) Hose Length (per D-30) 9/32 (7.2) .280 0.50 (12.7) 0.50 (12.7) 11.8 (300 5/16 (8.0) .312 1.00 (25.4) .625 (15.9) 11.8 (300) 3/8 (10.0) .375 3.00 (76.2) .750 (19.0) 11.8 (300) 5/8 (15.1) .625 5.90 (150) 1.14
23、(29.0) 12.0 (304.8) 4.4.6 Fluid Resistance 4.4.6.1 Method Per ASTM D471 except immerse samples 168 hours in DOT 3 brake fluid at 125 2C (255 5F). 4.4.6.2 Required 4.4.6.2.1 Tube & Cover: Hardness Change = 15 pts 4.4.6.2.2 Tube & Cover: Tensile strength reduction = 30% maximum 4.4.6.2.3 Tube & Cover:
24、 Elongation reduction = 45% maximum 4.4.6.2.4 Tube & Cover: Volume change = -5 to +15% 4.4.7 Ozone Resistance 4.4.7.1 Method Three test specimens will be mounted on a mandrel 7X OD. After mounting, the specimens will be aged 168 hours 125C then exposed in the ozone chamber for 168 hours 100 pphm. 4.
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