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Repair Makita HP330D CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”. 1. NECESSARY REPAIRING TOOLS 2. LUBRICATION It is not required to lubricate the gear section because the portion is replaced as a factory-assembled gear unit. 3. DISASSEMBLY/ASSEMBLY 1. Drill chuck DISASSEMBLING Note: It is required to remove Drill chuck when replacing Gear assembly, but you need not when replacing the parts that are independent of Gear assembly. Set the machine and repairing tools. (Figs. 1, 2, 3) 1. Drill Chuck (cont.) ASSEMBLING Remove Drill chuck. (Fig. 4) 1) Set the machine. (Fig. 5 and 6) 2) Set Hex wrench 8 to vise and described in Fig. 3. 1. Drill chuck (cont.) ASSEMBLING Set Drill chuck in place. (Fig. 7) 2. Gear assembly, Motor section DISASSEMBLING 1) Remove Drill chuck. (Figs. 1, 2, 3) Note: It is not required to remove Drill chuck when replacing only DC motor. 2) Remove Housing R from Housing L. (Fig. 8) 3) Separate DC motor from Gear assembly. (Fig. 9) 3. Gear assembly, Motor section (cont.) ASSEMBLING 1) Assemble Gear assembly to DC motor. (Fig. 10) 2) Assemble Speed change lever to Lever of Gear assembly. (Fig. 11) Gear assembly, Motor section (cont.) ASSEMBLING 3) Before setting Gear assembly and DC motor, take the following step in Fig. 12. 4) Setting Gear assembly and DC motor to Housing L, fasten Housing R with six 3x16 Tapping screws. (Fig. 13) 5) Set Drill chuck in place. (Figs. 5, 6, 7) Circuit diagram Wiring diagram Flag connectors have to be connected to the electrical parts as drawn in Fig. D-2. Route LED lead wires in Housing set (L) as drawn in Fig. D-3. Route lead wires except for LED in Housing L. ( Fig. D-4)