ENGLISH SERVICE MANUAL50 909 6510 000(3)2007-12 Razor Blade 26D / 28D / 28CDRIVE SYSTEMDRIVING WHEEL COVER DISASSEMBLY/ASSEMBLY (Machines after January 2007)DisassemblyDrive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).Empty the solution tank (59) with the tap (36).Place the machine on a hoisting system (if available).Otherwise, drive the machine on a level floor.Turn the ignition key (12) to "0".Remove the brush/pad-holder deck (16) or the cylindrical brush deck (17) (see the procedure in the relevant paragraph).Turn the front wheel (R) completely to the left.Apply proper wedges to right and left rear wheels (43), so that the machine cannot move when the front wheel (R) is lifted.With the help of an assistant, slightly lift the front part of the machine and apply to the frame brackets (S) two proper woodenshims (T) high enough to keep the front wheel (R) lifted for about 1.18 in (3 cm) from the floor.Lift the tank assembly (60) and disconnect the battery connector (63).Remove the wiring harness fastening clamp (A).Cut the fastening clamps (B) of the connector (C).Disconnect the electromagnetic brake connector (C).Remove the screws (D), then remove the cover (E).Disconnect the electrical connections (F).Remove the screws (G), then remove the driving wheel assembly (H).At the workbench, remove the electromagnetic brake (see the procedure in the relevant paragraph).Remove the screws (I), then remove the plate (J).With a puller (K) remove the brush side bracket (L).Remove the mounting screws (M) of the driving wheel cover (N). Recover the nuts (P) and washers (O).Remove the cover (N) from the reduction unit (Q).AssemblyAssemble the components in the reverse order of disassembly, and note the following:If necessary, use a rubber mallet to install the cover (N).Tighten the screws (M) at 141.61 lbf·in (16 N·m; 1.63 kgf·m).Tighten the screws (I) at 194.71 lbf·in (22 N·m; 2.24 kgf·m).FDE CABBS3016431.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.•••