l Using an Allen key, remove the screws M10 *20 at the bottom cover assembly
l Remove the bottom cover and clean it
l Discard the O- ring (65 mm * 3.0 mm)
l Remove the M8 hex nut and take out the spacer machined. Clean the spacer machined
l Remove and discard the poppet moulded AD1090
l Discard the O-ring (7.6 mm * 2.4 mm)
l Remove the spacer machined and clean it
l Using an Allen key, remove the screws at the top of the assembly.
l Remove the top cover and clean it
l Remove the spring
l Take the piston assembly out by pushing the stem machined AD1089 from bottom side
l Remove and clean the stem indicator AD1092, hex nut M8 and piston machined
l Discard the O-rings (69.4 mm * 5.33 mm and 7.6 mm * 2.4 mm) and remove the spacer machined
l Take out the stem machined AD1089
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 AD1089 and fit it inside the Inlet Housing valve AD1559
l Reassemble the stem indicator AD1092 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 AD1089
l Tighten the nut and reassemble the bottom cover
For servicing the Exhaust valve in dryspell plus models 200 & 250 refer section 8.5.4.4
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