Hitachi DH 24PM Technical And Service Manual page 30

(4) Removal of the Cylinder [38] from the Gear Cover Ass'y [18]
To remove the Cylinder [38] from the Gear
Hand press
Cover Ass'y [18], remove the Retaining
Ring [17] from the Cylinder [38] first. Then
support the end face of the gear cover on Cylinder [38]
the gear cover jig (J-344) and press the tip
of the Cylinder [38] by tapping with a hand
press as shown in Fig. 21. If the Cylinder
[38] is pressed excessively, the gear cover
will be deformed and the Cylinder [38]
cannot be removed. Be sure to tap with a
Gear Cover Ass'y [18]
hand press in order to remove the
Cylinder [38].
Gear cover jig (J-344)
Fig. 21
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