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6 CF65/75/85 series Drum brake construction DIAGNOSTICS 2-3 SYMPTOM: POOR BRAKING DECELERATION Possible cause Remedy Overload due to excessive loading Check vehicle loading condition System pressure too low Check pressure regulator setting Air leaks in the brake system Check the brake system for leaks Insufficient braking power/poor condition of Check trailer vehicle Pinched brake lines Check/replace brake lines Brake cylinder stroke too large Check automatic brake adjuster Frozen brake system Check brake system Brake components affected by road salt Check brake components for fouling Fouled brake cylinders Check brake cylinders for fouling Incorrect brake cylinder diameter Check brake cylinders Brake linings affected by grease or oil Check seals and/or cam rollers for excess Incorrect turning of the brake linings, brake Check brake lining contact pattern Damaged brake lining surface Check brake linings Poor quality of brake linings Check brake linings Glazed brake linings Check brake linings Damaged brake shoes Check brake shoes Seized brake shoe bearing Check brake shoe bearing Loose brake camshaft bearing Check brake camshaft bearing Worn cam rollers/cam roller bearing Check cam rollers/cam roller bearing Incorrect operation/setting of load sensing valve Check operation/setting of load sensing valve Incorrect vehicle combination Check vehicle combination Incorrect ABS operation Check ABS operation 1 ᓻ 200324 |