H476-USER MANUAL-FULL BOOK-ENGLISH

OPERATION

Braking

DrumBrake System

The thickness of the new discs is 45 mm. Discs shall be replaced when the thickness becomes lower than 39 mm. Check the disc thickness every three months as the service life of the disc shall differ greatly due to causes such as vehicle load, operating conditions etc. Inspect the disc surface against cracks during thickness inspection. Replace the disc if the cracks on the surface has reached air ducts or grown up to 25% of the lining pressure surface. Cracks that have not grown up to 25% of the surface do not affect the performance, you may continue to use the disc. Blue areas on the disc surfaces indicate that they have been subject to excessive heating. We recommend you to machine the disc as the structure of these areas have been deformed. Linings that have been subject to excessive heating shall also be replaced.

4

Z-cam brake system is a lining-drum type braking system. Brake lining wear is inspected from 4 holes on the brake plate. Remove the plugs on the plate for inspection, and replace them after inspection. *Z-cam brake system is optional.

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