Makita BBC231U Series Technical Information page 3

R
epair
[3] DISASSEMBLY/ ASSEMBLY
[3]-1. Shaft pipe complete (for BBC231U and AT-3623)
DISASSEMBLING
1) Loosen two M6x30 Hex socket head bolts, and then remove Protector. (Fig. 2)
2) Enlarge the clamp pitch of Protector cover carefully and slide two holes of Protector cover from the bolts-heads of two
M5x14 Hex socket head bolts. (Fig. 3) Protector cover can be removed.
3) Remove two M5x14 Hex socket head bolts and separate Protector clamp from Gear case assembly.
Then loosen M5x25 Hex socket head bolt as the clamp of Gear case assembly. (Fig. 4)
Gear case assembly can be pulled out from Shaft pipe.
4) Remove two M5x25 Hex socket head bolts and Pipe clamp as the clamps for Handle 19.
Handle 19 section can be separated from Shaft pipe. (Fig. 5)
5) Remove M5x20 Pan head screw and M5x20 Hex socket head bolt. And then separate
Pipe bracket cover from Pipe bracket by sliding Pipe bracket cover itself in the direction
designated as illustrated in Fig. 6
6) Pull out Shaft pipe and Shaft from Pipe bracket by hand. Refer to Fig. 7.
Note: When removing Shaft is difficult, pull out Shaft with water pump pliers. (Fig. 8)
7) Remove four M4x12 screws and Battery guard. (Fig. 9)
8) Remove two 5x25 Tapping screws that fastens Gear box and Housing R, and remove
five 4x18 Tapping screws. (Fig. 10) Housing R can be removed.
9) Disconnect Power supply cord unit and Controller complete by removing their
connectors.
Then remove 4x18 Tapping screw and Strain relief from Housing L. (Fig. 11)
Fig. 3
Clamp pitch of
Hole of Protector cover
Protector cover
for M5x14 Hex socket
head bolt-head
Bolt-head of M5x14
Hex socket head bolt
(2pcs.)
Fig. 6
M5x20 Pan head screw
Pipe
bracket cover
M5x20 Hex
socket head screw
Fig. 9
M4x12 screw (4pcs.)
Battery guard
Fig. 4
M5x25 Hex socket
head bolt
Gear case
assembly
M5x14 Hex socket head bolt (2pcs.)
Fig. 7
Pipe bracket Shaft
To
Cushion
side
Fig. 10
Housing R
4x18 Tapping screw (5pcs.)
Shaft pipe
Protector
clamp
Shaft pipe
Pipe bracket
cover
Pipe rubber
Fig. 11
5x25 Tapping
Connector of
screw (2pcs.)
Power supply
cord unit
Strain relief for
Power supply cord unit
Fig. 2
M6x30 Hex
socket head
bolt (2pcs.)
O ring 11
(2pcs.)
Protector
Fig. 5
M5x25 Hex socket
head bolt (2pcs.)
Handle 19
Fig. 8
Water pump pliers
Cushion Shaft
Connector of Controller
4x18 Tapping screw
P 3/ 12
Pipe clamp
Shaft pipe
Power
supply
cord unit