Hitachi DH 24PC3, Технические данные и руководство по обслуживанию

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Damper (A) [33]
Stopper Ring [36]
Damper Holder [35]
5-mm diameter hole (2 pcs.)
O-ring (C) [34]
Fig. 19
O-ring (B) [32]
O-ring (1AP-20) [30]
Second Hammer [29]
Hammer Holder [31]
Tap with a hammer.
Punch (C) (J-341)
(4) Removal of the cylinder and the second gear (slip mechanism section)
Remove the Gear Cover Ass'y [10] from the Inner Cover Ass'y [41] and remove the entire tool retainer.
Remove the Retaining Ring for D20 Shaft [8] with a retaining ring puller. Stand the Gear Cover Ass'y [10] in
this state and pull out the Cylinder [24] from the Gear Cover Ass'y [10] with a hand press. Then the Sleeve
[13] can be removed from the Cylinder [24] . Remove the Retaining Ring D30 [28] from the Cylinder [24] with
a retaining ring puller. Then the Second Gear [25] , Spring (A) [26] and Washer (A) [27] can be removed from
the Cylinder [24] .
(5) Removal of the cylinder and the second hammer
Remove the Stopper Ring [36] from the inside diameter portion of the Cylinder [24] . Then the Second
Hammer [29] , O-ring (1AP-20) [30] , Hammer Holder [31] , O-ring (B) [32] , Damper (A) [33] , O-ring (C) [34]
and Damper Holder [35] can be removed from the Cylinder [24] . As shown in Fig. 19, insert the no-hole side
of stopper ring jig (A) (J-341) into the Cylinder [24] until it contacts the end surface of the Damper Holder [35] .
Hold the Cylinder [24] and the end surface of stopper ring jig (A) (J-341) with a vise, and compress Damper
(A) [33] (it moves a little when the Stopper Ring [36] is pressed with punch (C) (J-341)). Insert punch (C)
(J-341) into the 5-mm diameter hole (2 places) in the Cylinder [24] and tap the outside of the Stopper Ring
[36] until the Stopper Ring [36] cannot be seen from the 5-mm diameter hole (2 places) to remove the Stopper
Ring [36] from the groove of the inside diameter portion of the Cylinder [24] . Then remove the Cylinder [24]
from the vise and pull out the Stopper Ring [36] from the inside diameter portion of the Cylinder [24] with ring
puller jig (B) (J-341) being careful not to pop out the Stopper Ring [36] . At reassembly, replace the Stopper
Ring [36] with new one as the removed Stopper Ring [36] is deformed. To prevent idle hammering, also
replace O-ring (C) [34] with new one at reassembly.
Stopper ring jig (A) (J-341)
Vise