Hitachi H 45MEY Service Manual page 6

(2) Removal of the piston
Move the Connecting Rod Ass'y [42]{39} as shown below and remove the Piston [41]{38} from the
Crank Shaft [86]{83}.
[41]{38}
(3) Removal of the first gear and crank shaft
(a) Remove the Bolt M5 x 16 [65]{62}, and then remove the Crank Cover [84]{81} from the Crank
Case [91]{88}.
(b) Remove the Bolt M5 x 16 [65]{62}, Bolt M5 x 12 [56]{53}, and Screw D5 x 25 [70]{67}, and then
remove handle (A), handle (B), and Back Cover [64]{61}.
(c) Disconnect the connector of the Panel [98]{95} from the Controller [53]{50}. Remove the Bolt M6 x
45 [49]{46}, and then remove the Crank Case [91]{88} from the Housing [52]{49}.
(d) Wipe off grease from the Piston [41]{38} side and the First Gear [96]{93} side in the Crank Case
[91]{88}, and then use a retaining ring puller to remove the Retaining Ring for D40 Hole [87]{84}
that retains the Ball Bearing 6203DD [88]{85}, while turning the Crank Shaft [86]{83} so that you
can see the Retaining Ring for D40 Hole [87]{84} hole.
(e) Place the Crank Case [91]{88} on an adequate cradle with its Crank Cover [84]{81} fixing surface
facing down, and then use a hand press to press down on the end surface of the Crank Shaft
[86]{83}. Then remove the First Gear [96]{93} and Crank Shaft [86]{83} from the Crank Case
[91]{88}.
[91]{88}
[42]{39}
[86]{83}
[91]{88}
[86]{83}
Crank cover
fixing surface
[87]{84}
[86]{83}
-5-
Hand press
[96]{93}
Adequate cradle
Crank cover
fixing surface