Hitachi H 65SD Technical Data And Service Manual page 16

Final Gear [41]
Inner Cover [43]
Crank Shaft [48]
Disassembly of remaining parts from the Inner Cover [43]
Loosen the three M5 x 16 Seal Lock Hex. Socket Hd. Bolts [47], and take out Bearing Cover (A) [70] and the
6203DDCM Ball Bearing [71].
Disassembly of the Mouth [14] and related parts
First, remove the six M8 x 30 Nylock Hex. Socket Hd. Bolts [4], and separate the Front Cover [5] from the
Cylinder Case [18]. The Second Hammer [7], Shank Sleeve [13], Damper (A) [12], Mouth [14], Mouth Cover
[15], Mouth Washer [16], and Urethane Ring [17] can then be taken out.
Removal of O-Ring (E) [10]
As O-Ring (E) [10] is installed in the inner portion of the Shank Sleeve [13], it may be difficult to remove. As
illustrated in Fig. 15, pry O-Ring (E) upward gently with a slender flat-blade screwdriver, being very careful not
to damage the surface of the O-ring.
Removal of the Striker [22] and related parts
Remove the four M8 x 35 Nylock Hex. Socket Hd. Bolts
[25], and separate the Cylinder Case [18] from the Housing
Ass'y [50]. From the Cylinder Case [18], take out the
Striker [22], Piston [28], and Connecting Rod Ass'y [29] in a
single body. Holding the Striker [22] firmly in one hand,
grasp the Connecting Rod Ass'y [29] in the other hand and
pull it forcefully to separate it from the Striker. Finally,
extract the Piston Pin [27] from the Piston [28], and
separate the Piston from the Connecting Rod Ass'y [29].
Disassembly of the Retainer [1] section
Remove the two D6 x 55 Roll Pins [11] from the 6 mm dia. holes of the Retainer [1] and remove the Lever Pin
[2]. The Retainer [1] and two Retainer Dampers [3] can then be removed from the Front Cover [5] (Fig. 16).
Retainer [1]
Retainer dampers [3]
(2 pcs.)
Press the end surface of the Crank Shaft
by fitting a steel rod with a hand press.
Fig. 14
Lever Pin [2]
Fig. 16
--- 13 ---
Ball Bearing [40]
Tubular jig
O-Ring [10]
Shank
Sleeve [13]
Fig. 15
D6 x 55 Roll Pins [11]
(2 pcs.)
Front Cover [5]
Slender
flat-blade
screwdriver