Makita BTW074 Impact Driver User Manual


 
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Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Armature (cont.)
(1) Insert Armature into Yoke unit so as not to damage the wiring of Armature and not to be pinched your fingers
between yoke unit and Armature fan. And insert the drive end of Armature into Internal gear case as drawn in Fig. 6.
(2) Assemble Motor section (Armature, Yoke unit ), Internal gear case and Brush holder as drawn in Fig. 7.
Fig. 6
Fig. 7
ASSEMBLING
DISASSEMBLING
1. Hold Yoke unit on workbench and
slowly insert Armature into Yoke unit
until the drive end reaches workbench.
2. When the drive end
of Armature reaches
worktable, lift up Yoke
unit slowly.
Notch
3. Insert the drive end of Armature
into Internal gear case. And insert
the commutator end of Armature
into Brush holder.
Internal gear case
Yoke unit
Brush holder
Fig. 5
Armature
Yoke unit
Internal gear case
Motor section
Notch of
Yoke unit
Housing set (L)
Brush holder
Assemble Internal gear case, Yoke unit, Armature and Brush holder to Housing set (L) by the following points.
* setting the slip stopper of Internal gear case to the box portion of Housing set (L)
* setting the notch of Yoke unit to the projection of Housing set
(1) Remove Armature as drawn in Fig. 5.
1. Remove Internal gear case
from Motor section.
2. Remove Armature
from Yoke unit.
Note: Set Yoke unit with its Notch
facing to the workbench side.
Motor section
Projection for
Notch of Yoke unit
Box portion for Slip
stopper of Internal gear case
Slip stopper of
Internal gear case