Hitachi WH 14DMR Technical Data And Service Manual page 34

Magnet (F) Ass'y
[28] <25>
Brush Block [30] <27>
(11) Removal of the Armature and Pinion Set [26] <23>
Support Inner Cover (B) [25] <22> so that it does not contact the
fan of the Armature and Pinion Set [26] <23>. With a hand
press, push down the tip portion of the Armature and Pinion Set
[26] <23> (pinion) to remove it.
(12) Removal of Ring Gear (C) [21] <18> and Damper (A) [24] <21>
Remove Ring Gear (C) [21] <18> from Inner Cover (B) [25]
<22> and remove Damper (A) [24] <21> with a small flat-blade
screwdriver. Ring Gear (C) [21] <18> is firmly inserted in Inner
Cover (B) [25] <22>. Insert a small flat-blade screwdriver
between Ring Gear (C) [21] <18> and Inner Cover (B) [25] <22>
to remove Ring Gear (C) [21] <18>. Remove Damper (A) [24]
<21> with a small flat-blade screwdriver.
Armature and
Inner Cover (B) [25] <22>
Pinion Set
[26] <23>
Armature and Pinion Set
[26] <23> (pinion)
Side Yoke (A) [27] <24>
Dust Guard Fin (B) [29] <26>
Adjust the convex of dust guard fin (B)
to the concave of the brush block.
Damper (A) [24] <21>
Ring Gear (C)
[21] <18>
Fig. 10
--- 31 ---
Inner Cover (B) [25] <22>
Armature and
Pinion Set [26]
<23> (pinion)
[21] <18>
[22] <19>
[23] <20>
[24] <21>
Fig. 11
[25] <22>