-3-
1. Precautions on disassembly and reassembly
WARNING: Be sure to disconnect the power cord plug from the wall outlet before conducting repair.
Otherwise, the motor may run suddenly and you could get injured.
1. Disassembly of the tool retainer
Remove the Front Cap
<1>
while pulling the Grip
<5>
in the arrow direction. Note that the Front Cap
<1>
is
firmly fitted to the Retainer Sleeve
<32>
. Insert the edge of a flat-blade screwdriver or similar tool into the
gap between the Front Cap
<1>
and Grip
<5>
, and then pry up the Front Cap
<1>
by placing the fulcrum on
the Grip
<5>
as shown below. Then remove the Grip
<5>
from the Retainer Sleeve
<32>
.
Remove the Stopper Ring
<2>
by using a retaining ring puller. Then remove the Retainer Washer
<3>
,
Retainer Damper (A)
<4>
, Bit Lock Holder
<6>
, two Bit Locks
<31>
, Thrust Plate
<7>
, Retainer Spring
<8>
, Spring Holder (A)
<9>
, and O-ring (S-26)
<16>
from the Retainer Sleeve
<32>
.
2. Disassembly of the hammering mechanism
(1) Removal of the second hammer and striker
(a) Remove the Bolt M5 x 18
<96>
and then detach the Crank Cover
<95>
and lever holder ass'y from
the Crank Case
[121]{111}
. Then take out the Change Plate
<104>
and Slider
<49>
from the Crank
Case
[121]{111}
.
(b) Remove the Bolt M5 x 12
<18>
from the Cylinder Case Cover
<17>
and then detach the Cylinder
Case Cover
<17>
from the Cylinder Case
<24>
.
(c) Remove the Bolt M8 x 35
<25>
and detach the Cylinder Case
<24>
from the Crank Case
[121]{111}
.
(d) Remove the Retaining Ring D40
<19>
and pull out the Roll Pin D2 x 10
<10>
from the Cylinder Case
<24>
. Then pull out the Retainer Sleeve
<32>
, Second Hammer
<35>
, Cylinder
<39>
, Striker
<40>
,
and other parts from the Cylinder Case
<24>
as a single assembly unit.
(e) Remove Metal (A)
<50>
, Slider
<49>
, Sleeve
<48>
, Clutch
<47>
, Clutch Spring
<46>
, Lock Spring
<44>
, Lock Spring Washer
<43>
, Lock Sleeve
<45>
, and Spring Holder (B)
<42>
from the assembly
unit.
(f) Turn the Retainer Sleeve
<32>
and pull out the eight Needle Pins D8
<33>
from the Retainer Sleeve
<32>
to separate the Retainer Sleeve
<32>
from the Cylinder
<39>
.
Disassembly
REPAIR GUIDE
Flat-blade screwdriver
<9>
<32>
<2>
<3>
<31>
<8>
<5>
<7>
<16>
<4>
<6>
<1>
