Makita AN450H Technical Information - Page 4
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[4] DISASSEMBLY/ASSEMBLY
[4]-1. Head valve section
DISASSEMBLING
Disassemble Head valve section as illustrated in Figs. 3 and 4.
Fig. 3
Fig. 4
While holding Head valve by hand,
blow the air into Top cap with air duster.
Head valve and Rear cushion can be lifted
from Top cap.
air duster
Top cap
ASSEMBLING
(1) Assemble Head valve section as illustrated in Fig. 5.
(2) Mount the Head valve section to Housing set. Refer to Fig. 3.
Fig. 5
Assemble Head valve to Top cap carefully
so that Compression spring 4 (8pcs.) does
not fall.
Head valve
Compression
spring 4 (8pcs.)
M5 Hex socket button head bolt
Exhaust cover cap
Exhaust cover
Filter
Top cap
M5x35 Hex socket
head bolt (4pcs.)
Rear housing
guard (2pcs.)
Top cap gasket
Housing set
Rear cushion can be completely
removed by pushing with 1R308
through the hole of Top cap.
Head valve
Rear cushion
Mount Flat washer 26 to
Rear cushion.
And put Rear cushion on
the center of Top cap.
Head valve section
Disassemble Head valve section from Housing set
by removing M5 Hex socket button head bolt and
M5x35 Hex socket head bolt (4pcs.).
Head valve and Rear cushion remain in Top cap in
this step.
1R308
Top cap
Flat washer 26
Rear cushion
Flat washer 26
Remove Head valve by
turning by hand.
If removing is difficult,
lever up Head valve with
slotted screwdriver.
Head valve
slotted screwdriver
Finally set Rear cushion in
place in Top cap with 1R247
and arbor press.
1R247
P 4/ 16
arbor
press