2) 2) DISASSEMBLY DISASSEMBLY (1) Removal of relief valve assembly Remove cap of relief valve assembly (17) with 14 mm hexagonal wrench. Assemble removed relief valve assembly (17) to original state when reassembling. (2) Removal of make up valve and bypass valve assembly Loosen plug (37) with 14 mm hexagonal wrench, and remove check valve (35) and spring (36). (3) Marking at swing motor Before disassembling motor, make a matching mark between cover (12) and housing (1) for easy reassembling. (4) Remove mounting bolts of cover Loosen hexagon socket bolt (18) with 12 mm hexagonal wrench. 7-9