JB/T 7158-2010Construction machinery - Test methods for cleanliness of parts and components (English PDF)

1 Scope

This standard specifies a method of detecting the cleanliness of construction machinery parts by weighting method, including detection objects, preparations, impurity collection, impurity detection, impurity analysis and test report.

This standard is applicable to the detection of cleanliness of construction machinery parts.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB 1922-2006 Petroleum solvents for paints and cleaning (ASTM D 3735:1996 (2001), etc., NEQ)

GB/T 6003.1 Test sieves of metal wire cloth (GB/T 6003.1-1997, eqv ISO 3310-1:1990)

QC/T 571 Work guideline for cleanliness of automobile - Nouns and terms

QC/T 573 Work guideline for cleanliness of automobile - Operators, facilities and environment

3 Terms and definitions

For the purposes of this standard, the terms and definitions given in QC/T 571 apply.

4 Detection objects

Detection shall be conducted at the lubrication positions of specific parts before final assembly.

Specific parts to be detected include torque converter, transfer case, transmission, drive axle and rear axle housing in transmission system, as well as supporting wheel, guide wheel and sprocket wheel in traveling system.

Positions to be detected include all surfaces in contact with the working medium.

5 Preparations