Makita HM1810 Manual page 5

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/Assembling Motor Section (cont.)
INSTALLING FIELD
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.
Fig. 7
[Correct]
Field
Motor housing A
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)
Fig. 9
Assembly of
Helical gear 50
and Spur gear 22
Bearing chamber
of Gear housing
Motor housing B side
Lead wire side
Field lead wires
No.1R045
Armature shaft
[Wrong]
Motor housing B side
Field lead wires
Lead wire side
Fig. 8
Gear housing cover
Armature
P 5 / 20
Gear housing