Hitachi HAMMER H 65SC Technical Data And Service Manual page 15

Removal of the Striker [8] and related parts
Remove the four Nylock Hex. Socket Hd. Bolts M8 x
35 [22], and separate the Cylinder Case [20] from the
Housing Ass'y [59]. From the Cylinder Case [20],
take out the Striker [8], Piston [11], and Connecting
Rod Ass'y [38] in a single body. Holding the Striker
[8] firmly in one hand, grasp the Connecting Rod
Ass'y [38] in the other hand and pull it forcefully to
separate it from the Striker. Finally, extract the Piston
Pin [10] from the Piston [11], and separate the Piston
from the Connecting Rod Ass'y [38].
Disassembly of the Stop Lever [1]
Push Damper (B) [6]
with two flat-blade screwdrivers.
Disassembly procedures are illustrated in Fig. 9. Pull the Stop Lever [1] outward in the direction indicated by the
arrow, and turn it slightly so that its end surface comes to rest on the flange portion of the Front Cover [7]. Next,
turn the Spring Case [4] so that the holes of the Spring Case are aligned with the Needle Roller [2]. Then, push
in Damper (B) [6] with flat-blade screwdrivers to compress the Lever Spring [5]. Finally, while keeping the Lever
Spring compressed, fit a 3 mm or less dia. steel rod into the hole of the Spring Case [4], and push out the Needle
Roller [2]. The Stop Lever [1], the Damper (B) [6], and the Lever Spring [5] can then be taken out.
How to remove the L-Ring [9]
The L-Ring [9] can be removed by prying it with a flat-blade screwdriver or manually, as shown in the following
figure. (Fig. 10)
Lever Spring [5]
Damper (B) [6]
Needle Roller [2]
Spring
Case [4]
3 mm dia. hole
Steel rod
(3 mm or less dia.)
Fig. 9
Fig. 10
--- 12 ---
O-Ring [14]
Shank
Sleeve [15]
Stop Lever [1]
Overlap the end surface of the
Stop Lever [1] on the flange
portion of the Front Cover [7].
Slender screwdriver
Fig. 8