-2-
WARNING: Always remove the battery from the main body before starting repair or maintenance
work. Because the tool is cordless, inadvertently activating the switch with the battery
left in the main body will start the motor rotating unexpectedly, and could cause serious
injury.
1. Precautions on disassembly and reassembly
[Bold] numbers in the description below correspond to the item numbers in the parts lists and exploded
assembly diagrams for the Models DS 18DE and DS 18DEX.
1. Removal of the hook ass’y
Remove the Truss Hd. Screw M4 (Black) [42] and the Hook Ass’y [41]. The Hook Ass’y [41] need not be
removed, but is removed here to facilitate disassembly work.
2. Removal of the tail cover and housing (A).(B) set
(1) Remove the two Tapping Screws (W/Flange) D3 x 16 (Black) [34] from the Tail Cover [35] and then
remove the Tail Cover [35].
(2) Remove the nine Tapping Screws (W/Flange) D3 x 16 (Black) [34] from the tool body. Hold Housing
(A).(B) Set [38] at its battery mount portion, and then gently open it.
(3) After opening Housing (A).(B) Set [38], lift up Clutch Dial (S) [4] to take out the built-in parts together
from the inside of Housing (A).(B) Set [38]. The built-in parts are the Gear Box Ass'y [3], Rotor Pinion
Ass’y [30], Pushing Button [37], Stator Controller Ass’y [29], Shift Knob [32], and Strap (Black) [44]
(Model DS 18DE only). Pull out the Gear Box Ass'y [3] from the Rotor Pinion Ass’y [30] attached to the
Stator Controller Ass’y [29].
NOTE: The Rotor Pinion Ass’y [30] is removed together with the stator because the rotor has
strong magnetic force.
3. Disassembly of the gear unit
• Disassembly of the gear box ass'y and hand-clamping mechanism
(1) Turn the Motor Spacer [28] counterclockwise and remove it from the Gear Box Ass'y [3]. Remove the
Shift Arm [10].
NOTE: Be careful not to deform the Shift Arm [10] by applying excessive force to it.
(2) Turn Washer (B) [27] mounted in the Gear Case [11] counterclockwise and remove it. Then, take out
the First Ring Gear [26], Planet Gear (A) Set (4 pcs.) [25], Pinion (B) [24], Planet Gear (B) Set (4 pcs.)
[23], Pinion (C) [22], and Slide Ring Gear [21] in this order.
(3) Push Needle Roller (A) Set D2.2 (2 pcs.) [12] with a thin pin and pull it out from the other side of the
Gear Case [11]. Then, take out the Shift Dog [20], Planet Gear (C) Set (5 pcs.) [19], Carrier [18], Ring
Gear [17], six Steel Balls D5 [16], four Rollers [15], Lock Ring [14], and Washer (B) [13] in this order
from the inside of the Gear Case [11].
NOTE: Because the parts are very small, be careful not to lose them. Pay particular attention to
the four Rollers [15] and six Steel Balls D5 [16] that may easily roll away.
Disassembly
REPAIR GUIDE
