Makita HR4501C Technical Information page 15

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Crank section, Cylinder, Piston
ASSEMBLY
1) Passing Connecting rod through Ring 38, connect Connecting rod to Crank shaft. Refer to Fig. 43.
2) Mount Ring spring 37 and O ring 35 (2 pcs.) on Cylinder 34 before assembling Cylinder 34 to Crank housing complete.
(Fig. 44)
3) Mount Ring 38 and Ring spring 36 to the Cylinder end which protrudes into Crank room.
Refer to Fig. 39 (right).
4) Regarding HR4510C and HR4511C, Seal plates have to be assembled to the position illustrated in Fig. 45.
5) Do the reverse step of disassembling.
Fig. 44
Ring spring 37 functions
as a stopper to stop the
assembled Cylinder 34 at
the position as it was.
[3] -7. Switches, Controller, Power Supply Cord
DISASSEMBLY
1) Main switch and Slide switch (for HR4501C and HR4510C only) can be disassembled as illustrated in Figs. 46 and 47.
Fig. 46
Disassemble Handle
cover by unscrewing
4x18 Tapping screw.
Handle
Handle cover
4X18 Tapping screw
slotted screwdriver
Fig. 47 (HR4510C and HR4511C only)
4X14 Tapping
Screw (2 pcs.)
Disconnect Connector from Controller.
Unscrew 4x14 Tapping screw to remove Controller
in the next step.
Ring spring 37
O ring 35
Main switch can be
replaced.
Main
switch
Controller
Slide lever complete
Handle
Connector
Fig. 45 (HR4510C and HR4511C only)
Seal plate
Disassemble Handle section by
unscrewing 5x25 Tapping screws.
Handle section
Slide lever
complete
Handle
Unscrew 4x14 Tapping screw and
separate Switch box from Handle.
Now Slide switch can be replaced.
P 15/ 23
5x25 Tapping
screw (6 pcs.)
Slide switch Switch box
4x14 Tapping
screw
Leaf spring