Hitachi H 45MRY Technical Data And Service Manual page 21

Removal of hammer holder (A), damper (A) and retainer sleeve
Remove the Seal Lock Hex. Socket Hd. Bolt M6 x 25 [11] from the Front Cover [12]. Then the Front Cover
[12] and the Retainer Sleeve [16] can be removed from the Cylinder Crank Case [47]. Insert a small flat-blade
screwdriver into the groove of the Front Cover [12] and remove Ring (B) [20]. Then Hammer Holder (A) [18]
and Damper (A) [17] can be removed from the Front Cover [12]. Remove the Ring [3] to remove the Retainer
Sleeve [16] from the Front Cover [12] (Fig. 14).
Ring (B)
Front cover
Front cover
Ring
Groove
Retainer sleeve
Hammer holder (A)
Damper (A)
Fig. 14 Fig. 15
Removal of the piston and the striker
Remove the Seal Lock Hex. Socket Hd. Bolt M6 x 25 [11] from the Front Cover [12]. Then the Front Cover
[12], Retainer Sleeve [16], Second Hammer [21], Hammer Holder (B) [24], Damper (B) [25], Hammer Holder
(C) [27], Damper (C) [22] and Sleeve (A) [23] can be removed from the Cylinder Crank Case [47].
The Cylinder [30], Striker [28], Slide Sleeve [31] and Spring (B) [32] are remained in the Cylinder Crank Case
[47]. Lightly tap the Front Cover [12] side of the Cylinder Crank Case [47] with a plastic hammer to remove
the Cylinder [30]. Then the Slide Sleeve [31] and Spring (B) [32] can be removed from the Cylinder Crank
Case [47]. The Striker [28] can be removed by tapping the Cylinder [30] lightly with a plastic hammer.
The Piston [35] is remained in the Cylinder Crank Case [47]. Remove the Seal Lock Hex. Socket Hd. Bolt
M5 x 16 [39] from the Crank Cover [40] to remove the Crank Cover [40] from the Cylinder Crank Case [47].
Remove the Retaining Ring for D10 Shaft [37] using a retaining ring puller and remove the Connecting Rod
[36] from the Crank Shaft [42].
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