Hitachi DH 28PC Technical Data And Service Manual page 27

Damper Washer (B) [12]
Oil Seal [10]
O-Ring (1AS-50) [9]
Damper (A) [11]
Cylinder [21]
Clutch [33]
Felt Packing (A) [13]
Clutch Spring [32] Bevel Gear [34]
Cylinder Case [8]
Crank Case [104]
Connecting Rod [37]
Piston [36]
Crank Shaft [106]
(e) Change Lever
Fit O-Ring [62] to Crank Case [104] and insert Lever Shaft [61] as shown in the figure. Use the stopper ring
puller to remount Retaining Ring for D35 Hole [60], then rotate Lever Shaft [61] by 90 degrees as shown in
the figure ("Rotation + hammering" position). Use Change Lever [58] for easy rotation of Lever Shaft [61].
Reassemble Lever Holder [59] and then insert Change Lever [58] along with Lever Spring [64], Pushing
Button [65], and Pin D2 x 10 [63] at the "Rotation + hammering" position. Press Pushing Button [65] of
Change Lever [58] and confirm that Pin D2 x 10 [63] of Change Lever [58] is firmly seated in the groove of
Lever Holder [59]. Then tighten Seal Lock Hex. Socket Hd. Bolt M4 x 12 [57].
Crank Case [104] Lever Shaft [61]
Retaining Ring for D35 Hole [60]
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