l Remove the top cover and clean it.
l Remove the spring.
l Take the piston assembly out by pushing the stem machined AD1113 from bottom side
l Remove and clean the stem indicator AD1057, hex nut M8 and piston machined
l Discard the O-rings (47.2 mm × 3.53 mm and 7.6 mm × 2.4 mm) and remove the spacer machined
l Take out the stem machined AD1113
l Rotate and remove the guide bush using the two holes.
l Discard the O-ring (12.3 mm × 2.4 mm) that is exposed.
l Discard the O- ring (37.9 mm × 3.53 mm) and U-ring.
l Reassemble the guide bush assembly with new components and place it in the valve housing.
l Grease the stem machined AD1113 and fit it inside the Housing valve AD1535
l Reassemble the stem indicator AD1057 and spacer machined with new O-rings and a new poppet moulded
l Replace the spring and reassemble the top cover
l Reassemble the spacer machined AD1055
l Fix the new poppet moulded in the stem machined AD1113
l Tighten the nut and reassemble the bottom cover
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