Hitachi DH 22PB, Технические данные и руководство по обслуживанию, Страница: 24 / 38

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Front Cap [1]
Stopper Ring [2]
Ball Holder [4]
Holder Plate [5]
Holder Spring [6]
Washer (B) [7]
Grip [3]
Fig. 10
Steel Ball 7.0 [21]
Grip [3]
Fig. 9
(2) Disassembly of the tool retainer
Slide the Grip [3] fully in the arrow direction as shown in Fig. 9 and remove the Front Cap [1]. Pulling the Grip
[3] as shown in Fig. 10, remove the Stopper Ring [2] with a retaining ring puller. Then the Grip [3], Ball Holder
[4], Steel Ball D7.0 [21], Holder Plate [5], Holder Spring [6] and Washer (B) [7] can be removed from the
Cylinder [22].
(3) Disassembly of the cylinder and the second gear (slip mechanism section)
Remove the Gear Cover [10] from the Inner Cover [39] and remove the entire tool retainer. Remove the
Retaining Ring for D20 Shaft [8] with a retaining ring puller. Stand the Gear Cover [10] in this state and pull
out the Cylinder [22] from the Gear Cover [10] with a hand press. Then the Sleeve [17] can be removed from
the Cylinder [22]. Remove the Retaining Ring for D30 Shaft [26] from the Cylinder [22] with a retaining ring
puller. Then the Second Gear [23], Spring (A) [24] and Washer (A) [25] can be removed from the Cylinder
[22].
(4) Disassembly of the cylinder and the second hammer
Remove the Stopper Ring [34] from the inside diameter portion of the Cylinder [22]. Then the Second
Hammer [27], O-ring (1AP-20) [28], Hammer Holder [29], O-ring (B) [30], Damper (A) [31], O-ring (C) [32]
and Damper Holder [33] can be removed from the Cylinder [22]. Remove the Stopper Ring [34] from the
groove of the inside diameter portion of the Cylinder [22] by tapping the Stopper Ring [34] through the 5-mm
diameter hole of the Cylinder [22] with a hammer and a punch as shown in Fig. 11. At reassembly, replace the
Stopper Ring [34] with new one as the removed Stopper Ring [34] is deformed. To prevent idle hammering,
also replace O-ring (C) [32] with new one at reassembly.