-2-
5. Removal of the drill chuck and drive unit
(1) Attach the spindle lock jig (an accessory of special repair tool J-355) to the spindle of Front Case
[10]
,
and then mount it in special repair tool J-355 clamped in the vise as illustrated in Fig. 1.
(2) Turn the sleeve of Drill Chuck 13VLRL-N
[2]
counterclockwise (as viewed from the front) to fully open
the jaws of Drill Chuck 13VLRL-N
[2]
. Turn the Flat Hd. Screw (A) (Left Hand) M6 x 25
[1]
clockwise
and remove it. (Note that this screw is left-hand threaded.)
(3) Fit the hexagonal bar wrench (M10) into Drill Chuck 13VLRL-N
[2]
as illustrated in Fig. 1, and then
remove Drill Chuck 13VLRL-N
[2]
by turning the hexagonal bar wrench counterclockwise.
(4) Remove Dial Holder (B)
[6]
and the Click Spring
[11]
from the Front Case
[10]
.
(5) Disassembly of the clutch mechanism
Turn the Nut
[7]
counterclockwise to remove it from the Front Case
[10]
. Take out the Spring
[8]
,
Stopper (A)
[28]
, and Stopper Spring
[29]
in this order.
NOTE: Do not disassemble the Front Case [10].
6. Disassembly of the armature unit
(1) Remove the Magnet
[37]
from the Armature and Pinion Set
[36]
.
Note that the Magnet
[37]
has strong magnetic force. Hold the Motor Spacer
[35]
securely and pull it
toward the back of the Armature and Pinion Set
[36]
to remove.
NOTE: When removing the Magnet [37], note that the ball bearing and washer behind the
Armature and Pinion Set [36] may be attracted to the Magnet [37] and come off the
Armature and Pinion Set [36]
.
(2) Remove the Motor Spacer
[35]
.
Remove the Motor Spacer
[35]
from the Armature and Pinion Set
[36]
. If the Motor Spacer
[35]
is too
tight to remove, push up the head of the armature shaft in the Armature and Pinion Set
[36]
while
holding the Motor Spacer
[35]
.
7. Disassembly of the power supply unit
Disconnect the two soldered internal wires (red and black) coming from the Brush Block
[38]
, and the
three soldered internal wires (red, black and white) coming from the Controller Terminal Set
[46]
from
the DC-Speed Control Switch
[50]
. The power supply unit can now be disassembled.
Drill Chuck 13VLRL-N
[2]
Dial Holder (B)
[6]
Front Case
[10]
Hexagonal bar wrench
Vise
Special repair tool (J-355)
Spindle
Fig. 1
