Disassembly / Reassembly operation
43
Upper valve
Unscrew the nut (23) and the shovel rod (31),
Unscrew the piston valve (22),
Unscrew the piston bush (20) and remove the piston nut (16),
the male washer (17), the piston seals (18) and the female
washer (19),
Reinstall the parts in the reverse order of the disassembly
sequence.