1. Precautions on disassembly and reassembly [Bold] numbers in the description below correspond to the item numbers in the parts list and exploded assembly diagram for the Model DH 18DPA and {Bold} numbers to those for the Model DH 12DD. Disassembly 1.
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2. Disassembly of the hammering mechanism (1) Removal of the gear cover Set the Change Lever [11]{11} to the "Rotation + Hammering" ( mark) position. Remove the four Tapping Screws (W/Flange) D4 x 30 (Black) [8]{8} to remove the Gear Cover [9]{9}. (2) Disassembly of inner cover (B) ass’y Remove the two Seal Lock Hex.
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3. Disassembly of the cylinder assembly (1) Disassembly of the slip clutch ass’y Remove the Machine Screw M4 x 5 [14]{14} that fixes the Change Lever [11]{11} and Stopper [13]{13} in the Gear Cover [9]{9}. Pull out the Change Lever [11]{11} and Stopper [13]{13} from the Gear Cover [9]{9}.
Reassembly Reassembly can generally be conducted by reversing the disassembly procedure. However, special attention should be given to the following items. 1. Reassembly of the cylinder ass’y NOTE: Use the special repair tool specified in the Special repair tool Code No. table for mounting the parts to the inside J-407 Stopper ring jig...
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2. Reassembly of the gear cover and cylinder ass’y (1) Mount the Second Gear [18]{18}, Spring (A) [17]{17}, and Washer [16]{16} on the Cylinder [20]{20} ass’y and fix them with the Retaining Ring for D25 Shaft [15]{15}. Mount the Damper [26]{26}, Thrust Washer (A) [27]{27}, and Thrust Washer (B) [28]{28} from the rear end of the Cylinder [20]{20}.
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3. Reassembly of the second shaft ass’y NOTE: Use the special repair tool specified in the Special repair tool Code No. table for reassembly of the second shaft J-408 Bevel gear jig 376748 ass’y. (1) Mount the Clutch [44]{44}, Reciprocating Bearing [45]{45}, Needle Cage [46]{46}, and Thrust Washer (C) [47]{47} on Second Shaft (A) [43]{43}.
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4. Reassembly of the hammering mechanism NOTE: Degrease the M5 screw hole on Inner Cover (A) Ass’y [49]{49} using the parts cleaner before reassembly of the hammering mechanism. Otherwise, the screw may be loosened and it may cause troubles. (1) Mount O-ring (A) [30]{30} to the Striker [29]{29} and push it in the Piston [31]{31} as shown in Fig. 9. Mount the two Washers [42]{42} to the Piston [31]{31} and insert the Piston Pin [41]{41} into the Piston [31]{31}.
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5. Reassembly of the gear cover ass’y (1) After mounting the hammering mechanism to Inner Cover (A) Ass’y [49]{49}, insert Spring (B) [33]{33} into the tip of Inner Cover (B) [35]{35}. Mount the Thrust Plate [32]{32} to the Piston [31]{31} fitting its bottom in the outside groove on the Clutch [44]{44}.
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Do not apply any grease other than the grease for rotary hammer to the battery terminals. Otherwise, it may cause a malfunction or accident. Fig. 12 Outside of the cable sleeve (2 places) Battery terminal (Model DH 18DPA: 3 places) Battery terminal (Model DH 12DD: 4 places) Model DH 18DPA Model DH 12DD (3) Put the panel ass’y in housing (A) so that the internal wires between the panel ass’y and the main PCB...
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Fig. 15 Stator FET PCB ass’y Cable sleeve Cable sleeve Stator FET PCB ass’y Red and black internal wires Red and black internal wires Battery terminal Battery terminal Main PCB ass’y Main PCB ass’y Model DH 18DPA Model DH 12DD -10-...
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Ribs Ribs Model DH 18DPA Model DH 12DD : Be careful not to get the internal wires and cables caught between housings (A) and (B) (3 places). : Do not put any internal wire or cable in this space (1 place).
• Tapping Screw (W/Flange) D4 x 20 (Black) [40]{40} ·························· 2.0±0.5 N•m (20±5 kgf•cm) No-load current No-load current should be as follows using a fully charged battery after no-load operation for five minutes in "Rotation + Hammering" mode. • DH 18DPA: 5.6±1.0 A • DH 12DD: 11.1±2.0 A -12-...
CAUTION: The viscosity and consistency of this grease are optimized for our rotary hammers in order to prolong the service life. Therefore, applying other grease to the Models DH 18DPA and DH 12DD may significantly shorten the service life. -13-...
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* Apply grease for rotary hammer unless otherwise specified. Fig. 19 [20]{20} Fig. 18 [18]{18} [21]{21} [22]{22} Apply to the entire periphery. Apply to the claws. Fig. 21 Fig. 20 [20]{20} [45]{45} Apply to the bore surface. Apply to the arm. Apply to the bore surface Put 2 grams of grease in the ball portion.
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Fig. 26 Fig. 27 [49]{49} Put 6 grams of grease in the rear of the piston. Apply grease to the tooth plane of the rotor ass’y pinion. Put 15 grams of grease in the Gear Cover [9]{9}. -15-...
Fig. 30 • Connecting diagram LED light Battery terminal ass’y Controller ass’y 18-pin ribbon 6-pin connector cable ass’y cable (F) FET PCB ass’y Panel ass’y 2. Precautions on disassembly and reassembly of the charger Please refer to the service manuals for precautions on disassembly and reassembly of the charger Models UC 18YFSL and UC 12SL.