4)Disassembling the chuck(See the figure 9.)
a. As mentioned in 3)-a How to replace the armature, remove the tool holder cap, the chuck cover and
the crank housing cover.
b. Remove the ring spring 25.
c. Remove the reaf spring 25 for the step pin 8 .
d. Remove the step pin 8 from the tool hplder and chuck ring .
Ring spring 25
Circle clip(shaft) WR-45
Tool holder
Leaf spring
Step pin 8
Cup washer 45
Chuck ring
Use care in direction.
Dent portion
Figure 9
Figure 10
Figure 11
6)Disassembling the tool holder and crank housing
a. Insert the minus driver into the dent portion on the external place of the seal case and slightly strike
it to remove the seal case.(See the figure 10.)
b. Disconnect the circle clip(hole) R-56 and then pull out the tool holder.
Tool holder
Seal case
Circle clip(hole) R-56
Tool holder
5) Assembling the chuck
Set up the leaf spring and step pin 8 cerfimly.(See the figure 9.)
7)How to take out the cylinder 28.5
a. The cylinder 28.5 is slightly pressed into the crank housing.
To disconnect the cylinder 28.5,
slightly hit the crank housing against the firm
table several times in a straight line to disconnect it.
(See the figure 12.)
firm table
Figure 12
