Makita HM1317C Technical Information page 14

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-5. Crank section, Gears
ASSEMBLING
(1) Assemble Crank shaft as illustrated in Fig. 26.
Fig. 26
Assemble Ball bearing
6205LLU to Crank shaft.
Ball bearing
6205LLU
Crank shaft
Crank housing
complete
Ball bearing
6204LLB
(HM1307C, HM1307CB without AVT mechanism)
(2A) Assemble Piston to Crank shaft. and assemble Crank cap section. Refer to Fig. 21A.
(HM1317C, HM1317CB with AVT mechanism)
(2B) Assemble Bearing box complete by taking the disassembling step in reverse. Refer to Figs. 24B,23B, 22B and 21B.
When mounting Bearing box complete to Crank housing, pay attention to Fig. 27.
Fig. 27
Note: Impossible to properly assemble Bearing box complete
to Crank housing complete without engaging Counter
shaft with Crank shaft.
Find out the engaging point that Bearing box complete
plunks down by turning Counter shaft with small wrench.
Assemble Ball bearing 6204LLB to Crank housing
complete with Arbor press.
Ball bearing
6204LLB
Supporting the assembled Crank shaft with 1R252,
mount Helical gear 47 to the Crank shaft by pressing
it with Arbor press.
1R031
Helical gear 47
Crank shaft
1R252
for supporting
Crank shaft
small wrench
Assemble the Crank shaft to
Crank housing complete with
Arbor press by passing it
through Ball bearing 6204LLB.
Ball bearing
6204LLB
Ball bearing
6204LLB
Note: Ball bearing 6204LLB protrudes from
the original position in Crank housing
complete slightly when pressing Crank
shaft with arbor press as illustrated above.
This protrusion is disappeared by
pressing Helical gear 47 as illustrated
left.
P 14/ 19
Crank shaft