1. Scope

1.1 This standard [P:164] cover test method for evaluating leakage tendencies of wheel bearing greases when tested under prescribed conditions.

1.2 This test method differentiates among wheel bearing greases having distinctly different hightemperature leakage characteristics. It is not the equivalent of long-time service tests.

1.3 This test method has proven to be helpful in screening greases with respect to leakage tendencies for automotive wheel bearing applications.

NOTE - It is possible for skilled operators to observe changes in grease characteristics that can occur during the test, such as grease condition. Leakage is reported as a quantitative value, whereas the evaluation of grease condition is subject to differences in personal judgment among operators and cannot be used effectively for quantitative measurements.

2. References

The standards listed below contain provisions which, through reference in text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

IS No. Title

5319 : 1987 Commercial steel wool (first revision)

10301: 1982 Isopropyl alcohol for cosmetic industry

11686: 1997 Isopropyl alcohol, food grade (first revision)