Makita HP1640F Quick Start Manual page 3

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-1. Drill chuck
DISASSEMBLING
1) Hold 1R298 with Drill chuck.
2) Clamp 1R139 in vise so that flats of Spindle can be fit into 14mm width groove of 1R139.
3) Turn Drill chuck counterclockwise using 1R223, 1R224 and 1R298. (Fig. 2)
Note: If Drill chuck does not work, insert the hook of 781024-2 to a hole of Drill chuck,
then turn Drill chuck counterclockwise. (Fig. 3)
Fig. 2
1R224
1R223
1R298
ASSEMBLING
Take the disassembling step in reverse.
Note: Pre-set the fastening torque of 1R223 to 34.3 up to 44.1N.m.
[3]-2. Carbon brush, Helical gear 45, Ball bearing 6002LLB
DISASSEMBLING
1) Shift Change lever to Drill mode. (Fig. 4) Then separate Housing R from Housing L by removing 4x18 Tapping screws.
Carbon brushes can be removed from Brush holder unit.
2) Shift Change lever to hammer drill mode. Pick up Spindle and Change lever then pivot the Spindle section along
the arc illustrated in Fig. 5.
Fig. 4
Change lever Hammer drill mode
Drill mode
Housing L
3) Remove Cam holder complete from Spindle section by pulling Spindle. (Fig. 6)
4) Applying 1R165 to Helical gear 45, press Spindle to remove Helical gear 45. (Fig. 7)
5) Remove Retaining ring S-15 with 1R291. Ball bearing 6002LLB and Compression
spring 15 can be removed.
Fig. 6
Ball bearing 6002LLB
Cam
holder
complete
14mm
1R139
Drill chuck
vise
Fig. 5
4x18 Tapping
screw (7pcs.)
Housing R
Compression spring 15
Spindle
Fig. 3
781014-2
hole of Drill chuck
(Spindle, Compression spring 15,
Ball bearing 6002LLB, Retaining ring S-15,
Helical gear 45, Change lever, Steel ball 5.0,
Plate 19, Cam holder complete)
Spindle section except
Cam holder complete
Retaining
ring S-15
P 3/ 7
Change lever
(shifted to hammer
drill mode)
Spindle section
Fig. 7
1R165