P 5/ 17
Repair
[3]DISASSEMBLY/ASSEMBLY
[3]-2 Tool holder section (cont.)
ASSEMBLING
(2)Assemble Tool holder section by taking the reverse step of Fig. 5. Insert Impact bolt into Tool holder.
Note: Face the short end of Impact bolt to Hammer bit insertion side. See Fig. 8.
(3)Assemble Chuck section by taking reverse step of disassembly. Refer to Figs. 4, 3 and 2.
Fig. 8
Short end Long end
Hammer bit
insertion side 
Impact bolt
Tool holder
[3]-3 Active dynamic vibration absorber (exclusively for HM0871C)
DISASSEMBLING
(1)First, disassemble Chuck section as illustrated in Fig. 2, 3 and 4.
(2)Remove Housing cover as illustrated in Fig. 9.
Fig. 9
Housing cover
M5x25 Hex socket head bolt
Active dynamic vibration absorber
Remove Housing cover by unscrewing M5x25 Hex socket Head bolt.
Active dynamic vibration absorber comes into sight.
(3) Remove Active dynamic vibration absorbers from the both side of the machine as illustrated in Fig. 10.
Fig. 10
Insert Screwdriver into the hole of Handle side, and push Spring guide in Active dynamic vibration absorber to be stuck as follows:
Spring guide | Spring guide tilted and stuck | |||||||
in Pipe holder A | ||||||||
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Insert two slotted screwdrivers between Crank housing and Active dynamic vibration absorber, and then lever up Active dynamic vibration absorber from Crank housing.
Pipe holder A | Crank housing |
Spring guide has to be removed from Crank housing prior to the next step.