1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2016 SAE International All rights reserved. No part of this
3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J371_201605 SURFACE VEHICLE RECOMMENDED PRACTICE J371 MAY2016 Issued 1968-11 Rev
5、ised 2010-05Reaffirmed 2016-05 Superseding J371 MY2010 Drain, Fill, and Level Plugs for Off-Road, Self-Propelled Work Machines RATIONALE J371 has been reaffirmed to comply with the SAE five-year review policy. FOREWORD Plugs are extensively used in off-road, self-propelled work machines as defined i
6、n SAE J1116. Loss of these plugs, stripping of the threads, or failure to tighten because of difficulty in finding the right tool can result in serious damage and/or increased down time. All the plugs listed are nominal inch sizes pending the development of metric plug standards. 1. SCOPE This SAE R
7、ecommended Practice applies to off-road, self-propelled work machine categories of earthmoving, forestry, road building and maintenance, and specialized mining machinery as defined in SAE J1116., 1.1 Purpose The purpose of this document is to standardize and, therefore, minimize the number of sizes
8、and types of drain, fill, and level plugs required. It also establishes types and sizes of pipe thread and straight thread plugs requiring commercially available hand tools for removal and installation. It is not intended to establish dimensions and materials. 2. REFERENCES 2.1 Applicable Publicatio
9、ns The following publications form a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323
10、 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J48 Guidelines for Liquid Level Indicators SAE J476 Dryseal Pipe Threads SAE INTERNATIONAL J371 MAY2016 Page 2 of 4 SAE J531 Automotive Pipe, Filler, and Drain Plugs SAE J1116 Categories of Off-Road, Self-Propelled Work Machine
11、s 2.1.2 ISO Publication Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ISO 6302 Earth-moving machineryDrain, fill, and level plugs 3. APPLICATION It is recommended that the plugs listed in Table 1, Types A, B, C, and D be used as follows: 3.1 Tabl
12、es 2 and 3 and Figures 1 to 4 list the type and principal dimensions of the recommended plugs which are suggested to ease maintenance. Common tools can be used, a minimum number of tools are needed and the plugs are easily distinguished. All plugs and tools herein are nominal inch sizes. TABLE 1 - P
13、LUG TYPE APPLICATIONS Application Use TypePhysical Damage Likely A, C (C Preferred) Clearance Problems A, C (C Preferred) Frequent Removal and Reassembly D Minimal Removal and Reassembly B TABLE 2 - PIPE THREAD PLUGS DIMENSIONS MM (IN) Taper Pipe Thread d Type A Socket Drive Size s1 Type A Socket De
14、pth t1 (min) Type B Wrench Size s2 Type B Head Height k1 1/8-27 NPTF 7/16 5 (0.19)1/4-18 NPTF 9/16 5 (0.19) 3/8-18 NPTF 11/16 6 (0.22)1/2-14 NPTF 7/8 6 (0.22) 3/4-14 NPTF 1/2 8 (0.31) 1-1/8 8 (0.31) 1-11 1/2 NPTF 1/2 10 (0.38) 1-5/16 8 (0.31) 1 1/4-11 1/2 NPTF 3/4 12 (0.50) 1-7/8 10 (0.38) 1 1/2-11
15、1/2 NPTF 3/4 12 (0.50) 1-7/8 10 (0.38) Hand Tools To Use Socket Wrench Handles Socket Wrench Handles Commercially Available Hand Tools Commercially Available Hand Tools SAE INTERNATIONAL J371 MAY2016 Page 3 of 4 TABLE 3 - STRAIGHT THREAD PLUGS DIMENSIONS MM (IN) Thread d Type C Socket Drive Size s3
16、Type C Socket Depth t2 (min) Type D Wrench Size s4 Type D Head Height k2 5/1624 UNF 9/16 5 (0.19) 3/824 UNF 5/8 5 (0.19) 1/220 UNF 3/4 5 (0.19) 5/818 UNF 7/8 7 (0.25) 3/416 UNF 11/8 7 (0.25) 114 UNF 1/2 8 (0.31) 15/16 7 (0.25) 1 1/1612 UN 1/2 8 (0.31) 15/16 8 (0.31) 1 1/412 UNF 3/4 12 (0.50) 11/2 8
17、(0.31) 1 5/1612 UN 3/4 12 (0.50) 11/2 10 (0.38) 1 1/212 UNF 3/4 12 (0.50) 17/8 10 (0.38) 1 5/812 UN 3/4 12 (0.50) 17/8 10 (0.38) 1 3/412 UNF 3/4 12 (0.50) 21/16 10 (0.38) 1 7/812 UN 3/4 12 (0.50) 21/4 10 (0.38) 212 UNF 3/4 12 (0.50) 2-1/4 10 (0.38) Hand Tools To Use Socket Wrench Handles Socket Wren
18、ch Handles Commercially Available Hand Tools Commercially Available Hand Tools NOTE: The figures given in s1, s2, s3, and s4 columns are nominal tool sizes and not plug dimensions. Pipe threads are US standards dry seal pipe thread-B2.2. References: SAE J531, SAE J476, SAE J48, and ISO J6302. FIGURE
19、 1 - TYPE A SQUARE COUNTERSUNK HEADLESS PLUGS FIGURE 2 - TYPE B HEXAGON OUTSIDE HEAD PLUGS SAE INTERNATIONAL J371 MAY2016 Page 4 of 4 FIGURE 3 - TYPE C SQUARE SOCKET HEAD PLUGS FIGURE 4 - TYPE D HEXAGON OUTSIDE HEAD PLUGS 4. NOTES 4.1 Marginal Indicia A change bar (l) located in the left margin is f
20、or the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE MACHINE TECHNICAL STEERING COMMITTEE
