HDS Middle Range / HDS Premium Range Technical specificationsService Manual 04.2008 Page 119 / 1276 Technical specificationsUnit typeHDS 7/12-4 MUnit No.1.077-401Circuit dia-gram0.089-021Operating in-structions5.962-127Spare parts list5.970-808HDS 7/12-4 MX 1.077-451 0.089-021 5.962-127 5.970-808HDS 8/17-4 M 1.077-601 0.089-025 5.962-127 5.970-796HDS 8/17-4 MX 1.077-651 0.089-025 5.962-127 5.970-796HDS 9/18-4 M 1.077-801 0.089-025 5.962-127 5.970-799HDS 9/18-4 MX 1.077-851 0.089-025 5.962-127 5.970-799HDS 10/20-4 M 1.071-401 0.088-952 5.962-127 5.970-711HDS 10/20-4 MX 1.071-451 0.088-952 5.962-127 5.970-711HDS 12/18-4 S 1.071-601 0.088-952 5.962-127 5.970-802HDS 12/18-4 SX 1.071-651 0.088-952 5.962-127 5.970-802HDS 13/20-4 S 1.071-801 0.089-026 5.962-127 5.970-812HDS 13/20-4 SX 1.071-851 0.089-026 5.962-127 5.970-812The technical data sheets and the current circuit diagrams will be included in the next issue of thespare parts CD-ROM (DISIS) and are available in kaercher-inside (https://kaercher-inside.com).If required, the operating instructions and the spare parts lists can be ordered as a paper copy fromthe spare parts service by quoting the relevant part number.7 Special ToolsMultimeter 6.803-022Exhaust analyser insert 2.900-001Shut-off valve with thermometer 2.901-030Extraction tool for impeller 6.816-069Dismantling pliers for pressure / suction valves and fine water filter 4.901-062Mounting mandrel and sleeve Ø 18 mm 2.901.033Mounting mandrel and sleeve Ø 20 mm 2.901-037Mounting mandrel for high-pressure seal and oil seal Ø 22 mm 5.901-064Sleeve for installation of high-pressure seal Ø 22 mm 5.901-136Assembly mandrel for O-ring / support ring, overflow piston 5.901-163Installation tool for overflow valve seat 5.901-162Dismantling tool for overflow valve seat 5.901-161Extraction tool for swash plate 4.901-038Pressure gauge for fuel pressure 4.901-060Testing pressure gauge for operating pressure 4.742-025Mounting screws for piston guide housing (M8 x 75) 7.304-403Mounting screws for piston guide housing (M6 x 110) 7.304-467