Makita HR4002 Technical Information page 17

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -9. Field and Brush Holder Unit
ASSEMBLE
1) First assemble Field to Motor housing and then assemble Brush holder unit to Motor housing. Refer to Figs. 53, 54,
55, 56, 57 and 58.
Note: 1) The wrong order will causes Breakage or Deform of the Terminals of Field to assemble Brush holder
unit. Be sure to follow the above assembling step.
2) Use 1R063 or a pair of Bar to assemble Field exactly to Motor housing. (Fig. 53) It is easy to connect
the Receptacles of Brush holder unit to the Terminals of Field without their Deform or Breakage.
2) After mounting of Baffle plate, assemble Motor housing to Gear housing complete.
(Refer to Fig. 36 and Fig. 35.)
3) Connect Carbon brush to the commutator of Armature. And mount Rear cover to the Motor housing.
(Refer to Fig. 34.)
Fig. 53
Insert a pair of Bar into the
Screw hole for Tapping screw
bind 5x55.
Fig. 56
After taking off 1R063 or a pair of Bar,
tighten Field with Tapping screw bind
5x55.
Fig. 58
Bottom View of the Assembled
Brush Holder Unit
Guiding line on the inside surface of Motor housing
Fig. 54
1R063
Along the Bar, push Field
halfway into Motor housing.
Tapping screw
bind 5x55: 2 pcs.
Field
1) Align the top surface line of the base portion of Brush holder unit with
the guiding line on the inside surface of Motor housing.
2) Keeping the base portion of Brush holder unit parallel to the guiding
line, push straight into Motor housing.
Now Brush holder unit is connected to Field exactly.
3) Tighten Tapping screw bind 4x18.
Tapping screw bind 4x18: 4 pcs.
Fig. 55
Field
Fig. 57
With these four Receptacles,
connect to terminals of Field.
P 17 / 20
Assemble Field, by
striking the bottom of
Motor housing.
Brush holder unit
Face the Connector
portion to the Handle
assembling side.