Step1: Disconnect the system, release pressure and ensure unit is stable on the surface.
Step2: Remove housing cover and note spring orientation safely for correct reassembly.
Step3: Detach worn old spring from anchor points carefully, avoiding sudden recoil.
Step4: Install new spring onto hooks, ensuring correct alignment, tension, and secure seating.
Step5: Reassemble unit, check smooth plunger movement and ensure no binding.
Step6: Test dispensing function before returning to service; check consistent operation.