Chuck Section - Makita HK1820 Technical Information

R
epair
[3] DISASSEMBLY/ASSEMBLY

[3] -1. Chuck Section

DISASSEMBLY
Disassemble the Chuck section as described in Figs. 2 and 3.
Fig. 2
1) For easy repairing, separate Handle section and stand the machine on a workbench as illustrated below on right.
Note: Remove Compression spring 14 before standing the machine if it is left on Crank housing complete.
Crank housing complete
Motor housing
Disconnect Connector housing
of Controller from Motor housing.
Fig. 3
2) Remove Cap 38 with
slotted screwdriver.
Cap 38
5) Remove Steel ball 7 (2 pcs)
using screwdriver magnetized
with 1R288 while pressing
down Ring 21.
Screwdriver magnetized
with 1R288
Steel ball 7 (2 pcs)
Ring 21
DISASSEMBLY
Do the reverse of the disassembling steps.
Handle section
M5x20 Pan head screw (2 pcs)
5x25 Tapping screw (2 pcs)
3) Remove Ring spring 19 with 1R212 and
1R003 while pressing down Chuck cover.
1R212 and 1R003
Ring spring 19
Chuck cover
Note:
Be sure to press down
Chuck cover or it will
pop off due to the pressure
of Compression spring 42.
6) The parts inside Change ring can
be removed.
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4) Remove Chuck cover and
Ring 21
Guide washer
Conical compression
spring 21-29
Steel ball guide
P 3/17
Compression spring 42.
Compression spring 42
Chuck cover
7) Change ring can
now be removed.
Change ring