P 6 /20
R
epair
[3] DISASSEMBLY/ASSEMBLY
5) Separate Tool holder from Barrel complete.
Then remove Urethane ring 45 and
Flat washer 45 from Tool holder. (Fig. 10)
6) From Crank housing complete, remove Ring 17,
Rubber ring 17, Slide sleeve, Ring 33,
Compression spring 37 and Striker.
Remove O ring 22 from Striker. (Fig. 11)
Fig. 11
ASSEMBLING
Do the reverse of the disassembling steps. Be sure to remember the following notes.
Note 1) When assembling Fluoride ring to Impact bolt;
After installing Fluoride ring 25 on the groove of Impact bolt, the Ring is stretched and its edges are protruding from
the groove. In order to correct the deformation, insert the Ring into the repairing tool, Taper Sleeve (Tool No.1R214),
and leave it in the tool about one minute. (Fig. 12)
Note 3) Be sure that the following parts are not reversible when assembled;
Impact bolt (See Fig. 13.)
Ring 17, Rubber ring 17, Slide sleeve, Ring 33, Striker
(See Fig. 11.)
Note 2) The installations are not exchangeable between Urethane washer 45 and Flat washer 45 when they are
assembled to Tool holder. (See Fig. 10.)
Taper Sleeve
(No.1R214)
Correction
Insert Impact bolt from
the HR4000C side of
the Taper Sleeve.
Impact Bolt
Fig. 12
Fig. 10
Tool holder
Urethane ring 45 Flat washer 45
Barrel complete
Crank housing complete
Compression
spring 37
Striker
Rubber ring 17
Ring 17
Ring 33
O Ring 22
Slide sleeve
Note:
When inserting Impact bolt into Tool holder, be careful not to push
the rings out of the groove on Impact bolt.
Before Correction :
Rings' edges are protruding from
the top edge of the groove on
Impact bolt.
groove on Impact bolt
Fluoride Ring 25
X ring 18
O ring 20
After Correction :
Rings' edges are positioned
under the top edge of the
groove on Impact bolt.
corrected
chamfered end
flanged end
flanged end
steel plate
O Ring
installation end
Impact Bolt
Tool holder
[Crank housing side]
Fig. 13
