How to maintain the double spring slack adjuster during daily use?

1. Daily inspection and maintenance
Regularly measure the free height of the spring in the double spring slack adjuster. If it is reduced by more than 10mm compared with the original shape or there are cracks or deformations, it needs to be replaced. Check whether the compression state of the double springs is consistent to ensure that the load of each support point is balanced. Use a measuring tool to measure the extension/shortening of the adjustment screw throughout the stroke to ensure that it meets the standard accuracy. Check the thickness of the brake shoe. If it is worn to a residual amount below the standard, it needs to be replaced. When lubricating the spring, use molybdenum disulfide or lithium-based grease and apply it to the spring guide surface, screw thread and seal contact area. The coating thickness is about 0.05mm. The grease must meet the physical and chemical performance indicators to avoid mixing different types of grease.

2. Maintenance process
Wear labor protection shoes, goggles and work hats, turn off the power of the equipment and fix the load to prevent accessories from slipping or misoperation.

After disassembling the adjuster, use a wire brush to remove rust and check the wear of the seals, springs and threads.
Clean the carbide on the brake surface and use sandpaper to polish it smooth to avoid the reduction of friction performance due to carbonization.

3. Special maintenance precautions
Dual spring clearance adjusters should
Avoid using in strong acid, strong alkali or high humidity environments to prevent corrosion of springs and seals.
In high temperature environments, the frequency of lubrication needs to be increased to prevent dry friction caused by grease evaporation. Perform comprehensive maintenance every 6-8 months, including disassembly inspection, grease replacement and performance testing. Replace the buffer pad and sealing components every 1-2 years, and anti-rust treatment is required for long-term disuse. After maintenance, mark the inspection date and record key parameters (such as spring compression and clearance value) to facilitate fault tracing.