Disassembly and Drainage of Old Oil
Disassembly: Remove the actuator from the brake frame and move it to the maintenance area.
Drain oil: Unscrew the oil filler plug, invert the actuator, and completely drain the old oil. If the oil is emulsified or heavily contaminated, it is recommended to flush the interior with a small amount of clean oil of the same type or kerosene until clear fluid flows out.
Inspection: When disassembled, check the impeller, piston, and seals for wear or aging, and replace them if necessary.
Add new oil and bleed the system (critical step)
Position: Place the dispenser vertically (with the fuel inlet facing straight up).
Add: Slowly pour in new oil to the specified level (usually the flat opening of the oil filler or the oil level mark).
Exhaust: During oiling and after filling, slowly pull the pushrod head up and down several times. This step helps expel air from the cylinder to prevent sluggish operation or abnormal noises. If the oil level drops, top it up to the specified height.
Tighten: After confirming that no air bubbles are escaping and the oil level is stable, tighten the oil filler plug (ensure the sealing gasket is intact).
Reassembly and Trial Operation
Reinstall: Reattach the actuator to the brake frame, restore the mechanical connection, and ensure the pushrod travel and brake shoe clearance are properly adjusted (typically 0.5–1 mm).
Test run: Power on and perform a brief start-up to check whether the push rod moves up and down smoothly and for any leakage; run without load for several cycles to confirm normal operation before applying load.
One-stop Brakes Factory in China
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