-10-
Fig.9 • Reassembly of the impact mechanism
2. Mounting the mechanical parts
(1-1) Model WH 14DBDL / WH 18DBDL
Load 28 Steel Balls D3.175
[11]<8>
in the Hammer
[10A]<7A>
and then reassemble Washer (J)
[12]<9>
, Hammer Spring (H)
[13A]
/Hammer Spring (F)
<10>
, Washer (S)
[14]<11>
, and the Spindle
[16]<13>
in this order.
(1-2) Model WR 14DBDL type / WR 18DBDL
Load 28 Steel Balls D3.175
[11]<8>
in the Hammer
[10A]<7A>
and then reassemble Washer (J)
[12]<9>
, Hammer Spring (H)
[13A]
/Hammer Spring (F)
<10>
, Washer (J)
[12]<9>
, Washer (S)
[14]<11>
, and the Spindle
[16]<13>
in this order.
(2) Match the top of the cam groove in the Spindle
[16]<13>
with the steel ball insertion groove in the
Hammer
[10A]<7A>
, push down the end tub of the Hammer
[10A]<7A>
with a hand press or similar tool,
compress Hammer Spring (H)
[13A]
/Hammer Spring (F)
<10>
until it hits Spindle
[16]<13>
, and then
support it.
(3) Put two Steel Balls D5.556
[9]<6>
in the steel ball insertion groove. Make sure the Steel Balls D5.556
[9]<6>
are in the cam groove, and then release the hand press.
(4) Settle the hammer assembly on the dedicated tool washer (S) rest (Model J
-
297), push down the end
of the Spindle
[16]<13>
, compress Hammer Spring (H)
[13A]
/Hammer Spring (F)
<10>
, fit the Stopper
(B)
[15A]<12A>
to the spindle shaft, and then release the hand press.
(5) Mount the two Idle Gear Sets
[17]<14>
and two Needle Rollers
[18]<15>
on the Spindle
[16]<13>
, and
then insert Washer (E)
[21]<18>
.
(6) Press-fit the Ball Bearing 6901VVCMPS2L
[22]<19>
to the Inner Cover
[24]<21>
, insert two Dampers (A)
[23]<20>
according to the shape of the Inner Cover
[24]<21>
, and then fit the O-Ring (S-42)
[20]<17>
to
Ring Gear (E)
[19A]<16>
. Match the detent rib of Ring Gear (E)
[19A]<16>
with the depressed portion
of Damper (A)
[23]<20>
.
(7) Make sure Washer (E)
[21]<18>
is inserted into the Spindle
[16]<13>
. Mount the Inner Cover
[24]<21>
and Hammer Case
[6A]<2>
with their ribs perpendicular to each other, while making sure the
Idle Gear Set
[17]<14>
of the hammer assembly is engaged with Ring Gear (E)
[19A]<16>
.
(8) Insert Anvil (D)
[8A]
/Anvil (D) Ass’y
<4>
to the end of the Spindle
[16]<13>
of the hammer assembly
and then set the Hammer Case
[6A]<2>
in place.
Make sure the rib of the Inner Cover
[24]<21>
is perpendicular to the rib of the Hammer Case
[6A]<2>
.
(9) Mount the Rotor Pinion
[25]<22>
on the assembled Inner Cover
[24]<21>
.
After remounting, make sure the Rotor Pinion
[25]<22>
rotates smoothly. If it does not rotate smoothly,
the gears are not properly engaged. In such case, correctly remount the Rotor Pinion
[25]<22>
.
Inner cover rib
90°
Hammer case rib