P 4 / 20
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Chuck Section
R
epair
DISASSEMBLE
ASSEMBLE
Do the reverse step of disassembling. Refer to the illustrations from Fig. 2 to Fig. 9.
[3] -2. Tool Holder Section and Barrel Complete
Pull off Barrel complete, while pushing Impact bolt
with Screwdriver toward Piston in Slide sleeve
so that the Impact bolt remains in the Slide sleeve.
1) In case of HR4002, it is not necessary to disassemble Chuck section, when repairing inside of Tool holder section.
Remove Barrel complete together with Chuck section. (Fig. 10) Now Impact bolt comes into your sight.
2) Check whether Fluoride ring 25 is worn out.
When O ring 20 (orange color) under Fluoro carbon resin ring 25 can be seen, Fluoride ring 25 is worn out. (Fig. 11)
Be sure to replace not only Fluoride ring 25 but also O ring 20 and X ring 18.
3) Check whether there has been dust in the Tool holder. If yes, be sure to clean up Tool holder.
4) For removing Flat washer 45 and Urethane ring 45 from Tool holder, chuck section has to be disassembled as
illustrated in page 3.
5) Disassemble Tool holder from Barrel complete, by striking it with plastic hammer. (Fig. 12)
6) Remove Urethane ring 45 and Flat washer 45 by pushing them toward the Bit installing side of Tool holder. (Fig. 13)
Screwdriver
Hex socket head
bolt M6x30: 4 pcs.
Urethane ring 45
Flat washer 45
Tool holder
Barrel
Impact bolt
Impact bolt
Slide sleeve
Fig. 10
Fig. 11
O ring 20
(orange color)
X ring 18
Worn Fluoride ring 25
Flat washer 45
Flat washer 45
Urethane ring 45
Urethane ring 45
Tool holder
Tool holder
Barrel complete
Fig. 12
Fig. 13
