Makita HR4001C Technical Information page 13

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Active Dynamic Vibration Absorber of HR4010C and HR4011C
DISASSEMBLING
1) Remove Crank housing cover and Handle. (Fig. 38)
2) See Fig. 39.
Through the hole on the Absorber holder of Crank
housing complete, insert Phillips screwdriver into the hole
on one end of the Active dynamic vibration absorber,
and push Spring guide (inner part of the Absorber) with
the screwdriver.
The Spring guide will tilt to be locked inside the Absorber,
and this end of the Absorber is now released from Crank
housing complete.
Then do the same on the other end of the Absorber.
3) Now the Absorber can be levered off from Crank housing
complete using a slotted screwdriver (Fig. 40)
Fig. 39
Phillips screwdriver
Absorber
holder
4) As illustrated in Fig. 41, Pipe holders can now be separated by turning
Pipe holders while pushing strong toward each other.
5) Now Active dynamic vibration absorber can be disassembled as illustrated
in Fig. 42.
An Active dynamic vibration absorber uses two each except for the
following parts: Pipe 16/ 1pc, Counter weight/ 1pc, O ring 8/ 4pcs.
Fig. 42
Pipe holder
O ring 8
ASSEMBLING
Do the reverse of the disassembling steps.
Note:
Do not forget to lock the Absorber in the Absorber holder of crank housing complete. (Fig. 39)
Compression spring 11
Pipe holder Spring guide
Compression spring 11
Spring guide Rubber pin 6
Fig. 38
Crank housing cover
Active dynamic
vibration absorber
Absorber holder of
Crank housing complete
Pipe 16 Counter weight
O ring 18
Handle
Fig. 40
Slotted screwdriver
Fig. 41
Pipe holder
P 13 /20