1.1 This engine lubricant test method is commonly referred to as the Roller Follower Wear Test. Its primary result, roller follower shaft wear in the hydraulic valve lifter assembly, has been correlated with vehicles used in stop-and-go delivery service prior to 1993. It is one of the test methods required to evaluate lubricants intended to satisfy the API CG-4 performance category. This test has also been referred to as the 6.2 L Test.
1.2 The values of units used in this test method are stated in either inch-pound units or SI units and are to be regarded separately as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.3 Table of Contents:
| Section | |
| Scope | 1 |
| Referenced Documents | 2 |
| Terminology | 3 |
| Summary of Test Method | 4 |
| Significance and Use | 5 |
| Reagents | 7 |
| Guidelines on Substitution | 7.1 |
| Apparatus | 6 |
| Preparation of Apparatus | 8 |
| New Engine Preparation | 8.1 |
| Installation of Auxiliary Systems | 8.2 |
| Test Procedure | 9 |
| Description of Test Segments and Organization | 9.1 |
| Engine Parts Replacement | 9.2 |
| Engine Starting Procedure | 9.3 |
| Normal Engine Shutdown Procedure | 9.4 |
| Emergency Shutdown Procedure | 9.5 |
| Unscheduled Shutdown and Downtime | 9.6 |
| New Engine Break-In | 9.7 |
| Pretest Procedure | 9.8 |
| Fifty-Hour Steady State Test | 9.9 |
| Periodic Measurements | 9.10 |
| Oil Sampling and Oil Addition Procedures | 9.11 |
| End of Test Procedure | 9.12 |
| Calculation and Interpretation of Test Results | 10 |
| Environment of Parts Measurement Area | 10.1 |
| Roller Follower Shaft Wear Measurements | 10.2 |
| Oil Analysis | 10.3 |
| Assessment of Test Validity | 10.4 |
| Final Test Report | 11 |
| Reporting Calibration Test Results | 11.1 |
| Report Forms | 11.2 |
| Interim Non-Valid Calibration Test Summary | 11.3 |
| Severity Adjustments | 11.4 |
| Precision and Bias | 12 |
| Reference Oil Precision | 12.1 |
| Bias | 12.3 |
| Keywords | 13 |
| ANNEXES | |
| Guidelines for Test Part Substitution or Modifications | A1 |
| Guidelines for Units and Specification Formats | A2 |
| Detailed Specifications of Apparatus | A3 |
| Calibration | A4 |
| Final Report Forms | A5 |
| Illustrations | A6 |
| Kinematic Viscosity @ 100C Procedure for Test Samples | A7 |
| Enhanced Gravimetric Analysis TGA Procedure | A8 |
| Sources of Materials and Information | A9 |
| Roller Follower Wear Test (RFWT) Data Dictionary | A10 |
| APPENDIXES | |
| Ranges for Howell LSRD-4 Reference Fuel | X1 |
| Diagnostic Data Review | X2 |
Product Details
- Published:
- 11/10/2002
- Number of Pages:
- 47
- File Size:
- 1 file , 960 KB
- Redline File Size:
- 2 files , 1.2 MB
