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1. REPAIR GUIDE
Be sure to remove the batteries from the main body before servicing. Inadvertent triggering of the switch
with the battery connected will result in a danger of accidental turning of the motor.
1-1. Precautions in Disassembly and Reassembly
The [Bold] numbers in the description below correspond to the item numbers in the parts list and exploded
assembly diagram for the Model DS 9DVA.
1-1-1. Disassembly
(1) Remove the Housing (B) [33].
Remove the seven Tapping Screws (W/Flange) D3 x 16 [28] secured to the driver unit. Gently open
the Housings (A) and (B) [33] while holding their battery loading sections.
(2) With the Housing (B) [33] removed, all the internal parts, assembled or separate, can be taken out as
they are.
Lift the entire contents from the Housing (A) [33] while holding the Motor [27] and Cap [6].
(3) Remove the Drill Chuck [2]. (See Fig. 4.)
(a) Turn the Motor [27] counterclockwise (when viewed from the rear) and remove it from the Rear Case
[17]. Remove the Shift Knob [39] from the Shift Arm [18]. Take care not to remove the Shift Arm
[18] from the Rear Case [17] in this operation.
(b) Mount the motor spacer (an accessory of the Special Repair Tool J-292) to the assembly of the Drill
Chuck [2], Cap [6], Front Case [11] and Rear Case [17] and then mount it to the Special Repair Tool
J-292 clamped in the vise as illustrated in Fig.4. In this operation, check that the pinion press-fitted
in the Special Repair Tool J-292 and the Planet Gear (A) [23] are engaged properly.
(c) Turn the Cap [6] clockwise (when viewed from the front) until it can turn no further. In this position
the drill mark "
Gear [19] to the Front Case [11] side with the Shift Arm [18].
(d) Turn the sleeve of the Drill Chuck [2] counterclockwise (when viewed from the front) to fully open the
jaws of the Drill Chuck [2]. Turn the Special Screw M6 x 23 [1] clockwise and remove it. (Note that
the Special Screw is left-hand threaded.)
(e) Fit the hexagonal bar wrench for M10 into the Drill Chuck [2] as illustrated in Fig. 4 and remove the
Chuck by turning the bar wrench counterclockwise.
MODEL
" on the Cap [6] is positioned to the Shift Arm [18] side. Secure the Slide Ring
DS 9DVA
− 1 −
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Summary of Contents for Hitachi DS 9DVA
- Page 1 1-1. Precautions in Disassembly and Reassembly The [Bold] numbers in the description below correspond to the item numbers in the parts list and exploded assembly diagram for the Model DS 9DVA. 1-1-1. Disassembly (1) Remove the Housing (B) [33].
- Page 2 Drill Chuck [2] Special Screw Hexagonal bar wrench M6 x 23 [1] Cap [6] Front Case [11] Slide Ring Gear [19] Shift Arm [18] Rear Case [17] Vise Special Repair Tool (J-292) Fig. 4 (4) Disassembly of the gear unit. Remove the Shift Arm [18] from the Rear Case [17], then remove the four Screw Sets D3 x 12 [4] connecting the Front Case [11] and the Rear Case [17].
- Page 3 Motor [27] with the marking on the Motor Spacer [26] and tighten with the Machine Screw M4 x 6 [30] and the Spring Washer M4 [31]. (c) Apply grease (Hitachi Motor Grease No.29) to the pinion pressed into the Motor [27]. [26]...
- Page 4 (2) Reassembly of the clutch unit (a) Apply grease (Hitachi Motor Grease No.29) to the sliding portion of the Front Case [11] and Clutch Plate [7] and the stepped portion of the Cap [6]. (b) Reassemble the Screw [4] through the Front Case [11] as follows.
- Page 5 [18] [11] [12] [13] [14] [15] [16] [17] [19] [20] [21] [22] [23] [24] [25] Groove Fig. 9 (iii) Install the Washer (B) [25] in the Rear Case [17] with the projection of the Washer (B) [25] engaged with the recess in the Rear Case [17], and turn the Washer (B) [25] clockwise until it can turn no further.
- Page 6 [18] Hole [18] Ridge Recess Marking Fig. 11 (d) Install the Drill Chuck [2] . Instal the Drill Chuck [2] with the Special Repair Toll (J-292) and secure it with the Special Screw M6 x 23 [1]. (e) Install the Shift Knob [39] into the assembly reassembled in step (d). When installing the Shift Knob [39] into the Shift Arm [18], note that the ”LOW”...
- Page 7 (4) Installation of the assembly reassembled in step (3) into the Housing (A) and (B) [33]. (a) Install the Pushing Button [37] into the Housing (B) [33]. (See Fig.13.) (b) Install the assembly reassembled in step (3) into the Housing (A) [33]. Note that the projections on the Front Case [11] and the Motor Spacer [26] are engaged in the recess in the Housing (A) [33].
- Page 8 (5) Other precautions in reassembly (a) When the assembly procedure is completed, make sure that the turning direction of the Drill Chuck [2] corresponds to the position of the Pushing Button [37]. When the Pushing Button [37] is pressed from the (R)-marked side, the Drill Chuck [2] should turn clockwise when viewed from the rear (opposite side of the Chuck [2]).
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Page 9: Standard Repair Time (Unit) Schedules
2. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL 60 min. Fixed Work Flow DS 9DVA General Assembly Spring Housing Keyless Chuck (A),(B) Set Motor DC-Speed Control Switch Shift Arm (Gear Box Ass’y) Front Case Ring Gear Carrier First Ring Gear...