R
epair
P 3 / 11
< 2 > Removing armature
< 3 > Disassembling mechanical section
( 1 ) After removing brush holder cap and carbon brushes, remove bumper with a slotted head screwdriver. See Fig. 1.
( 2 ) Unscrew 4 pcs. of hex socket head bolts M5x50 together with urethane rings and cup washers each 4 pcs.
Then, hammer case section can be removed from motor housing together with armature. See Fig. 2.
( 3 ) Do not separate internal gear cover from hammer case, because the grease leaks out, or inner parts can fall off
the hammer case. Then, holding hammer case together with internal gear cover, pull off the armature
as illustrated in Fig. 3.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Bumper
Carbon brush
Brush holder cap
Carbon brush
Brush holder cap
Hammer case
Internal gear cover
Armature
Hammer case
section
Cup washers 5
Urethane rings 5
Hex socket head bolts M5x50 5
Motor housing
Internal gear cover
Hammer case
Armature
( 1 ) Separate internal gear cover from hammer case. Take off the following parts from hammer case. See Fig. 4.
* Internal gear 71
* O ring 58
* Flat washer 19
* Anvil
* Hammer section
Flat washer 19
Anvil
Hammer section
Internal gear 71
O ring 58
Internal gear cover
Anvil
Hammer case
O ring 12
Remove O ring 12 from internal gear case.
<Note >
* Flat washer 19 can remain in hammer case.
* Inner parts can be removed from hammer case
by hand. However, if it is difficult to remove by
hand, strike anvil with plastic hammer. See Fig. 4A.
Fig. 4A
