Hitachi H 45ME, Service Manual

-5- 

(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}

. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
(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}

. 

Adequate cradle 

Hand press 

[42]{39} 

[86]{83} 

[41]{38} 

[96]{93} 

[91]{88} 

[86]{83} 

[91]{88} 

[86]{83} 

Crank cover 
fixing surface

[87]{84} 

Crank cover 
fixing surface