Haulotte Group 3522A, Operator'S Maintenance Manual

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HAULOTTE GROUP 9 AXLE AND RELATED COMPONENTS
133
TROUBLE SHOOTING (CONTINUED)
TABLE 9-7. TROUBLESHOOTING – HYDRAULIC BRAKING SYSTEM
Symptom Causes Remedies
Broken or Kinked Brake Line Repair or Replace
Severe Under Adjustment Adjust Brakes
No Brakes
Malfunctioning Actuation System Troubleshoot System
Brake Adjustment Not Correct Manual - Adjust Brakes
Automatic - Make Several Reverse Stops
Excessively Worn Brake Linings Replace Shoe and Lining
Incorrect Lining Install Correct Shoe and Lining
Grease or Fluid Soaked Lining
Repair Grease Seal or Wheel Cylinder.
Install New Shoe and Lining.
Frozen Master Cylinder or Wheel Cylinder
Pistons
Recondition or Replace All Cylinders,
Brake Fluid
Glazed Lining Re-burnish or Replace
Excessive Drum Wear Replace
Trapped Air in Lines Bleed System
Overloaded Trailer Correct
Weak Brakes
Malfunctioning Actuation System Troubleshoot System
Brake Adjustment Not Correct Manual - Adjust Brakes
Automatic - Make Several Reverse Stops Harsh Brakes
Grease or Fluid on Linings Replace Shoes and Lining
Grease or Oil on Linings Clean or Replace
Surging Brakes
Out of Round Drums or Cracked Drums
Machine or Replace
Under Adjustment Adjust
Lack of Lubrication Lubricate
Broken Brake Components Replace Components
Noisy Brakes
Incorrect Brake Components Correct
Loose, Bent or Broken Brake Components Replace Components
Under Adjustment Adjust
Locking Brakes
Out of Round Drums Machine or Replace
Incorrect Tire Pressure Inflate Evenly on Both Sides to Required
Pressures
Unmatched Tires on Same Axle Match Tires on Axle
Restricted Brake Lines or Hoses Repair or Replace
Malfunctioning Cylinder Assembly Check for Stuck or Sluggish Pistons
Defective or Damaged Shoe and Lining
Install New Shoe and Lining - Complete
Axle
Pulls to One Side
One Side Out of Adjustment Adjust
Improper Fluid Replace Rubber Parts - Fill with DOT4
Fluid
Blocked Master Cylinder Open with Compressed Air or Replace
Cylinder
Parking Brake Cable Frozen Free Cable and Lubricate
Dragging
Improper Lining Thickness or Location Install New Shoe and Lining