Makita HR4501C Technical Information page 12

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Crank Cap Section
ASSEMBLY
1) Assemble Link lever and Torsion spring 15 to Crank lever. (Fig. 35)
Fig. 35
Assemble Torsion spring 15 while hooking each tail to each wings of Link lever as follows.
Hook one tail of Torsion spring 15
to the lower wing edge of Link lever.
Link Lever
with Crank lever
2) Assemble Link plate to the Crank lever with M4x12 Pan head screw. Refer to Fig. 33.
Note: Apply adhesive (ThreeBond 1342 or Loctite 242) to the thread of M4x12 Pan head screw.
3) Slide Link plate fully to Handle installation side by hand so that Link lever's Pin portion can be moved within the frame
of Link plate after assembling Crank cap. (Fig. 36)
Fig. 36
Link plate
Slide Link plate fully to Handle installation side by hand.
If sliding Link plate by hand is impossible, Driving sleeve
does not engage with Straight bevel gear 35 when assembling
Tool holder section.
Push Driving sleeve to engaging it with Straight bevel gear 35
as illustrated in Fig. 20, and Link plate will come to the position
as shown in the center illustration in Fig. 36.
4) Mode change mechanism has to be assembled in Rotation with hammering mode as illustrated in Fig. 37,
and Fig. 38 (for HR4511C) / 38A (for HR4501C and HR4510C) in the next page.
Fig. 37
Circle marker on Crank cap
Note: Set Crank lever to
Rotation with
hammering mode.
Keeping its position of Crank lever's protrusion as illustrated above,
assemble Crank cap section to Crank housing complete.
Link plate
Crank lever
Hook the other tail to
the upper wing edge of
Link lever by pulling
with pliers.
Link lever's pin portion can be positioned
inside the frame of Link plate when Crank
cap section is assembled to Crank housing
complete.
Link plate can be slidden when Crank lever
turns.
Crank cap
Protrusion
Crank housing complete
Torsion spring 15
Link lever
Crank lever
Crank lever
Link
lever's Pin
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