Key Steps for Replacing a Hydraulic Press Filter

The key to replacing a hydraulic press filter lies in safety, cleanliness, and correct operation. The following are the most critical steps and key points summarized by the Jianlong Hydraulic Technology editors to ensure you grasp the essentials and use them as a reference during replacement.

1. Safety Preparation (Prerequisite)

1.1 Energy Isolation: The main power supply must be disconnected and locked out! This is the first priority to prevent accidental equipment startup and ensure personal safety.

1.2 Complete Pressure Relief: Operate the handle to move the slider up and down several times to relieve the main system pressure.

1.3 Open the air filter or pressure relief valve on top of the fuel tank to release any residual pressure inside the tank.

2. Replacement Procedure (Critical for Preventing Contamination)

2.1 Clean the Work Area: Before disassembly, thoroughly clean the filter housing and surrounding area with a lint-free cloth.

2.2 Remove the Old Filter Element: Use a belt wrench (avoiding damage to the filter housing) to unscrew the old filter element counterclockwise.

2.3 Use an oil pan to catch the drained oil. 2.4 Clean the Filter Housing Interior (This is the most critical step, easily overlooked and a major risk of contamination!)

2.5 Remove the Old Filter Element: After removal, be sure to reach into the filter housing with a lint-free cloth and thoroughly wipe away all sludge and debris, ensuring that no debris falls into the center oil port.

2.6 Install the New Filter Element:

2.6.1 Lubricate the Seal: Apply a thin layer of fresh hydraulic oil to the seal on the new filter element.

2.6.2 Manual Alignment: First, manually rotate clockwise until you feel the seal contact the seat.

2.6.3 Tighten to Requirement: After hand-tightening, tighten only 3/4 turn with a wrench! Overtightening can damage the seal and cause oil leaks.

3. Final Verification (Ensure Successful Loop Closure)

3.1 Refill and Vent: Check the oil level in the reservoir and refill with new oil of the same type to the specified range. 3.2 For the oil suction filter, loosen the bleed plug on the hydraulic pump head until bubble-free oil flows out before tightening.

3.3 Inching Bleeding and Test Run:

3.3.1 Inch-start the motor 2-3 times (1 second each time) to allow the pump to fill with oil.

3.3.2 Run the pump for 5-10 minutes without load.

3.4 Final Inspection:

3.4.1 Leak Check: Carefully inspect the new filter element for leaks.

3.4.2 Reset Indicator: Be sure to press the reset button on the filter element clogging indicator to clear the alarm.

Remember these three key points: Safety is the bottom line, Cleanliness is the core, and Standard operation is the guarantee. By grasping these key points, you can complete the replacement work efficiently and with high quality. For more information/advice on hydraulic filter replacement or to purchase other high-quality hydraulic presses, please contact us (or scan the WhatsApp QR code below). Jianlong Hydraulic Technology will provide you with personalized, customized professional solutions and dedicated service.