Makita HR2021 Technical Information page 7

R
epair
4. Insert "No.1R236 Round bar for arbor" and push ring spring 28 as deep as possible to the inner housing side
by striking the round bar for arbor as illustrated in Fig. 5D.
5. Pick up ring spring 28 with plier and take off it from tool holder as illustrated in Fig. 5E.
6. Disassemble the following parts from tool holder as illustrated in Fig. 5F.
* O ring case equipped with O ring 9
* O ring 15
* Ring 9
* Impact bolt equipped with O ring 12
7. Clean the inside of tool holder completely.
< 10 > Assembling impact bolt
1. Apply grease to the O rings referring to < 1 > Lubrication at page 2
* O ring 9 for O ring case
* O ring 15
* O ring 12 for impact bolt
2. Insert impact bolt, ring 9, O ring 15 and O ring case with O ring 9 into tool holder as illustrated in Fig. 5F.
3. Assemble ring spring 28 to the inner groove of tool holder by pushing it with screwdriver. Ring spring 28 has to be
assembled as illustrated in Fig. 6.
Impact bolt
Fig. 5D.
O ring 15
Ring 9
O ring 12
Fig. 6
Fig. 5E
Impact bolt equipped
with O ring 12
Fig. 5F
Ring spring 28
O ring case
O ring 9
< Note >
Do not install the used ring spring 28.
Always assemble the fresh one.
P 7 / 18
Ring spring 28
O ring case equipped
Ring 9
with O ring 9
O ring 15