Makita HR4501C Technical Information page 11

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Active Dynamic Vibration Absorber (HR4510C and HR4511C only)
ASSEMBLY
1) Assemble Active dynamic vibration absorber. (Fig. 30)
2) Set Spring guide in place as illustrated in Fig. 31.
3) Mount Active dynamic vibration absorber on the both side of Crank housing complete. (Fig. 32)
4) Do the reverse step of disassembly in Fig. 27.
Fig. 31
Spring guide
[3] -5. Crank Cap Section
DISASSEMBLY
1) Remove Crank cap section as illustrated in Fig. 27.
2) Disassemble Crank cap section as illustrated in Figs. 33 and 34.
Fig. 33
While gripping Crank lever with water pump pliers, unscrew M4x12
Pan head screw using cordlress impact driver with philips bit.
Crank lever
Fig. 34
Torsion spring 15
Link lever
Crank shaft
Spring guide
If Spring guide is
locked inside the
Absorber,
Push the locked
Spring guide to
protrude from Absorber.
Now Spring guide
protrudes.
phillips bit
M4x12 Pan head screw
Link plate
(with threadlocker)
Crank cap
Pull off Torsion
spring 15 with
pliers.
Fig. 32
Mount Active dynamic vibration absorber
while keeping its position parallel to
Crank housing.
Spring guide
Link plate and Change lever
can be disassembled from
Crank cap.
Link plate
Crank cap
Crank lever
Torsion
spring 15
P 11/ 23
Spring guide
Remove Link lever.
Link lever