Repair Guide; Precautions In Disassembly And Reassembly - Hitachi G 14DSL Technical Data And Service Manual

Be sure to remove the storage battery from the main body before servicing. Inadvertent triggering of the
switch with the storage battery connected will result in danger of accidental turning of the motor.

1. Precautions in disassembly and reassembly

The [Bold] numbers in the description below correspond to the item numbers in the Parts List and the
exploded assembly diagrams for the Model G 14DSL.
1. Removal of the gear
(1) Loosen the two Machine Screws (W/Sp. Washer) M5 x 16 (Black) [18] of the Wheel Guard Ass'y [20]
and remove the Wheel Guard Ass'y [20] from the Packing Gland [14].
(2) Loosen the four Seal Lock Screws (W/Sp. Washer) M4 x 12 [15] and remove the Packing Gland [14]
from the Gear Cover Ass'y [3].
(3) Remove the Retaining Ring for D11 Shaft [8] from the Spindle [16] with a retaining ring puller and pull
out the Gear [10]. Then the Gear [10] can be removed together with the Wave Washer [9] from the
Spindle [16].
2. Removal of the spindle
(1) After removal of the Gear [10], remove the Woodruff Key [24] from the Spindle [16].
(2) Loosen the three Slotted Hd. Screws (Seal Lock) M4 x 10 [13] securing the Packing Gland [14] and
remove the Spindle [16] together with the Ball Bearing 6001VVCMPS2L [11]. Pull out the Ball Bearing
6001VVCMPS2L [11] with a bearing puller or push the Spindle [16] with a hand press using a proper
sleeve to disassemble.
3. Removal of the armature and pinion set and the magnet
(1) Remove the two Brush Caps [25] then remove the two Carbon Brushes 5 x 6 x 11.5 [26] on both sides.
(2) Loosen the four Tapping Screws (W/Flange) D4 x 23 (Black) [1] and remove the Gear Cover Ass'y [3].
(3) Remove the five Tapping Screws (W/Flange) D4 x 20 (Black) [29]. Insert a flat-blade screwdriver into
the semicircular groove in the inner cover of the Armature and Pinion Set [4] at the bottom of the main
body and give the screwdriver one turn. Then the Armature and Pinion Set [4] slightly moves forward
and the spigot joint between the inner cover and the housing is released.
(4) After removal of Housing (B) [28], raise the commutator side of the Armature and Pinion Set [4] (at the
rear of the main body) a little and remove the Rubber Bushing [6].
(5) Raise the commutator side of the Armature and Pinion Set [4] (at the rear of the main body) a little.
Pressing the Brush Block [27] against Housing (A) [28], pull up the Armature and Pinion Set [4]. Then
the Armature and Pinion Set [4] can be removed together with the Magnet [5] from the Brush Block
[27].
(6) Pull out the Armature and Pinion Set [4] from the Magnet [5].
4. Removal of the brush block
(1) After removal of the Armature and Pinion Set [4], pull out the receptacle of the Brush Block [27] from the
Pushing Button Switch [36]. Remove the Brush Block [27] from Housing (A) [28].

REPAIR GUIDE

Disassembly
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