Makita HR4013C Technical Information page 5

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Impact bolt, Striker
DISASSEMBLING
(1) Impact bolt, Striker Piston can be disassembled without removing Chuck section. See Fig. 6.
(2) Striker is removed from Crank housing side as drawn in Fig. 7.
Fig. 6
1. Remove Housing cap by levering it up with
a slotted screwdriver. And then, remove four
M6x30 Hex socket head bolts.
Housing cap M6x30 Hex socket head bolt (4 pcs.)
Long bar
Fig. 7
1. Remove the parts from the Crank housing side.
Crank housing
3. Insert a long bar into Chuck and then push out Impact bolt.
Note: All the Rings on Impact bolt have to be replaced
when O ring 20 (orange) shows through the worn
Fluoride ring 25.
O ring 20
(orange)
Impact bolt
2. Remove Striker by tapping Cylinder
carefully with a plastic hammer
Ring 17
Rubber ring 18
Slide sleeve
Compression spring 33
Note: Replace old/ worn O ring 22 with a new one.
2. Remove Barrel section and Housing cover complete
together from Crank housing complete by grabbing
and lifting up the chuck by hand.
Fluoride ring 25
(the worn one)
Cylinder
O ring 22
Striker
P 5/ 19