Makita HM1317C Technical Information page 11

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears (cont.)
DISASSEMBLING
(4) Disassemble Armature as illustrated in Fig. 20.
Fig. 20
Detach Spiral spring
from Carbon brush.
(HM1307C, HM1307CB without AVT mechanism)
DISASSEMBLING
(5A) Disassemble Crank section as illustrated in Figs. 21A and 22A.
Fig. 21A
1. Disassemble Crank cap.
Crank cap
Fig. 22A
4. Putting Crank housing complete on 1R217, press Crank shaft with Arbor
press. Crank shaft can be removed from Helical gear 47.
Ball bearing 6204LLB still remains in Crank housing complete.
Helical gear 47
Crank housing
complete
By pulling Carbon brush,
disconnect its contact with
Armature's commutator.
2. Set Crank shaft and Connecting
rod of Piston to the position
illustrated below.
Connecting rod of Piston
Crank shaft
Helical gear 47
Ball bearing
1R246
6204LLB
Crank shaft
1R217
Disassemble Motor section (Motor housing, Armature,
Field, Brush holder unit etc.) using 1R045 with 1R346.
1R045
1R346
3. Piston can be pulled off from
Connecting rod.
O rings on Piston can be replaced.
See Fig. 19.
Crank shaft
5 Inserting 1R252 from the Crank
shaft side, press the 1R252 with
Arbor press.
Ball bearing 6204LLB can be
disassembled from Crank housing
complete.
Ball bearing
6204LLB
P 11/ 19
Motor section
Connecting
rod
Piston
1R252