Makita HM1810 User Manual

P 5 / 20
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/Assembling Motor Section (cont.)
INSTALLING FIELD
Fig. 7
Motor housing A
Field
Motor housing B side
Field lead wires
Field lead wires
Fig. 9
[Correct] [Wrong]
Motor housing B side
Lead wire side
Lead wire side
Do the reverse of the disassembling steps.
Important:
Field is not reversible when assembled into Motor housing A. Be sure to assemble so that the Lead wire side of the Field
is placed on the Motor housing B side as illustrated to left in Fig. 7.
It will be impossible to route the lead wires to Motor housing B if assembled as illustrated to right in Fig. 7.
REMOVING ARMATURE
If Armature is not removed in removal of Field as described in 5)
of "Removing Field", remove by following the steps described below:
1) Remove the parts of Fan 100 side (Fan 100, Bearing box and
Motor housing B). (See Figs. 3, 4, 5)
Note: It is not necessary to remove Motor housing A and Field.
Remove four M8x75 Hex socket head bolts with 1R231.
2) Remove Gear housing cover by raising with Slotted screwdriver and
Bearing extractor (No.1R263) as in Fig. 8.
Note: The two tools are necessary because Gear housing cover is
securely fastened to Gear housing using adhesive.
3) After removing the assembly of Helical gear 50 and Spur gear 22,
insert the arms of 1R045 through the opening of Gear housing.
Then grip the bearing chamber of Gear housing with the jaws of 1R045.
Now, by turning the handle of 1R045 clockwise, Armature can be
removed form Gear housing. (Fig. 9)
Assembly of
Helical gear 50
and Spur gear 22
Fig. 8
Gear housing cover
Gear housing
Armature shaft
Bearing chamber
of Gear housing
No.1R045
Armature

Makita HM1810 Specifications

General

Input power	2000 W
Impact energy (max)	44.9 J
Vibration level (chiseling)	9 m/s²
Toolholder	6 mm
Impact rate	1100 bpm
Product color	Black, Blue

Weight and Dimensions

Weight	32000 g