Makita HM1205C Technical Information page 12

R
epair
[3] ASSEMBLY/ DISASSEMBLY
[3] -4. Crank section (cont.)
ASSEMBLING
(1) Assemble Ball bearing 6206LLU and Helical gear 57 to Crank shaft as drawn in Fig. 22.
Fig. 22
1. Set Helical gear 57 with the high stepped rim of Helical gear 57 facing to Ball bearing side.
And assemble Helical gear 57 with the bearing to Crank shaft as drawn in Fig. 23,
or an incomplete engaging with Armature's Gear may occur as drawn in Fig. 24.
Arbor press
High stepped
rim of
Helical gear 57
Ball bearing
6206LLU
(2) Assemble Crank shaft section to Crank housing as drawn in Figs. 25 and 26.
Fig. 25
1. Insert Piston into Cylinder 40.
Cylinder 40
Piston
Fig. 26
1. Move Connecting rod of piston to the upper dead point
on Handle assembling side. And then, align the pin of
Crank shaft with the hole of Connecting rod, and tap
Helical gear 57 with a plastic hammer.
The pin of Crank shaft
Connecting rod
of Piston
The hole of Connecting rod
(3) Assemble components by reversing the disassembly steps (6) to (1). (Refer to Figs. 18, 17, 16 and 15.)
Fig. 23
Armature's gear
1R029
Helical gear 57
Crank shaft
1R258
2. Assemble Cylinder 40 to Crank housing.
Helical gear 57
Fig. 24
Correct
Armature's gear
Cylinder 40
2. Crank shaft is fitted into Connecting rod.
Note: Do not forget to assemble Flat washer 12
to Crank shaft.
Connecting rod
Crank shaft
P 12/ 17
Wrong
Helical gear 57
Crank
Housing
Flat washer 12