Makita HR4013C Technical Information page 6

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Impact bolt, Striker (cont.)
ASSEMBLING
(1) Assemble O rings and Fluoride rings to Impact bolt as drawn in Fig. 8.
Fig. 8
Before Correction:
Rings' edges are protruding from
the top edge of the groove on
Impact bolt.
Fluoride ring 25
O ring 20 O ring 20
groove on Impact bolt
Be careful about the assembly direction
of Impact bolt when inserting it into
Tool holder.
(2) Assemble Striker section as drawn in Fig. 9.
Fig. 9
1. Insert Striker into Cylinder so that
the O ring 22 side faces to Piston
in Crank housing.
Cylinder
(3) Assemble Barrel section to Cylinder. Refer to Fig. 6.
Assembly of Rings to Impact Bolt
Wrong
2. Assemble the parts drawn below to Cylinder. Be careful
about the assembly directions of Ring 17 and Slide sleeve.
Striker Cylinder
O ring 22
1R312
Correction
Impact bolt
1R214
Insert Impact bolt from
the HR4000C side of
1R214. And keep
Impact bolt approx.
60 seconds in 1R214.
Correct
Rubber ring 18
Compression spring 33
After Correction:
Rings' edges are positioned under
the top edge of the groove on
Impact bolt.
Corrected
Correct
Ring 17
Slide
sleeve
P 6/ 19
Wrong