Makita HK0500 Technical Information page 6

Assembly
1) After attaching Flat washer27 to Clunk housing,
install Oil seal 30. ( See Fig.12)
2) After attaching Piston to Clunk shaft, install Tool
holder. ( Fig.10)
NOTE: Check that Flat washer 27 is not inclining and
is in a position shown in
Fig. 12 .
3) Using Jig (1R 232), install Ring27, Polyurethane
washer28 and Ring27 in this
order. ( See Fig. 13)
4) Check if O Ring 53 is attached to Clunk cap or not. (
See Fig.10)
Flat washer 27
Oil seal 30
Clunk housing
Fig. 12
Jig (1R232)
Ring 27
Polyurethane washer 28
Ring 27
Fig. 13