Troubleshooting drawworks auxiliary brakes involves checking various components and systems. This includes inspecting brake bands, linkage, blocks, and the cooling system, as well as ensuring proper water flow and lubrication. Also, it’s important to check for air leaks in the pneumatic control system and ensure the clutch mechanism is functioning correctly.
Detailed Troubleshooting Steps:
- Visual Inspection:
- Look for cracked brake bands, worn linkage, loose brake blocks, or blocks that are dangerously thin.
- Check for proper adjustment of the equalizer bar.
- Ensure all connecting parts (screws, nuts, cotter pins) are tight and in good condition.
- Cooling System Check:
- Verify that the water supply system is delivering adequate water to the auxiliary brake and brake rims.
- Ensure nozzles are not clogged on the spray system.
- Check for leaks in the water lines and connections.
- Ensure the water pump is functioning properly and the packing is lubricated.
- Pneumatic System Check:
- Look for air leaks in the pneumatic control system.
- Check the status of all pipelines, valves, and pressure gauge actuators.
- Clutch Mechanism:
- Check the clutch mechanism for wear and tear.
- Ensure the clutch is operating smoothly and engaging properly.
- Bearing Inspection:
- Check the main bearings on all shafts for wear and lubrication.
- Replace excessively worn bearings.
- Brake Pad Inspection:
- Check the wear of the brake pads.
- Water Level Adjustment (Hydromatic Brake):
- If using a hydromatic brake, ensure the water level is adjusted properly to achieve the desired braking power.
- Lubrication:
- Ensure all lubrication points (bearings, pipelines, etc.) are properly lubricated.
- Pressure Gauges and Actuators:
- Check the status of all pipelines, valves, and pressure gauge actuators in the pneumatic control system.
- Oil Seals:
- Check all oil seals for leaks.
Additional Notes:
- Regular inspection and maintenance are crucial for ensuring the reliability and safety of the auxiliary brake system.
- Consult the manufacturer’s manual for specific troubleshooting procedures for your drawworks model.
- In some cases, it may be necessary to replace worn or damaged components to restore proper braking performance.