Hitachi HAMMER H 65SC Technical Data And Service Manual page 14

Inner Cover [45]
Crank Shaft [37]
Disassembly of the Crank Shaft [37] section
First, remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 16 [33] which fix the Bearing Cover [32]. Then, as
illustrated in Fig. 7, support the lower surface of the Inner Cover [45] with an appropriate tubular jig, align an
appropriate steel rod with the end surface of the Crank Shaft [37], and press down on the steel rod with a hand
press. The Ball Bearing 6205DDCMPS2L [31], Distance Ring (B) [43], Final Gear [42], two Woodruff Keys 4 x 16
[36], and Crank Shaft [37] can then be disassembled from the Inner Cover [45].
Inner Cover [45]
Crank Shaft [37]
Disassembly of remaining parts from the Inner Cover [45]
Loosen the three Seal Lock Hex. Socket Hd. Bolts M5 x 16 [33], and take out Bearing Cover (A) [48] and the
Ball Bearing 6203DDCMPS2L [49].
Disassembly of the Mouth [17] and related parts
First, remove the six Nylock Hex. Socket Hd. Bolts M8 x 30 [3], and separate the Front Cover [7] from the
Cylinder Case [20]. The Shank Sleeve [15], Damper [13], Mouth [17], Mouth Cover [16], Mouth Washer [18],
and Urethane Ring [19] can then be taken out.
Removal of the O-Ring [14]
As the O-Ring [14] is installed in the inner portion of the Shank Sleeve [15], it may be difficult to remove. As
illustrated in Fig. 8, pry the O-Ring [14] upward gently with a slender flat-blade screwdriver, being very careful
not to damage the surface of the O-Ring.
Armature Ass'y [61]
Final Gear [42]
Press the end surface of the armature
with a hand press.
Fig. 6
Press the end surface of the crank shaft
by fitting a steel rod with a hand press.
Ball Bearing [41]
Fig. 7
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Tubular jig
Tubular Jig