Hitachi DH 18DPA Service Manual page 7

3. Reassembly of the second shaft ass'y
NOTE: Use the special repair tool specified in the
table for reassembly of the second shaft
ass'y.
(1) Mount the Clutch [44]{44}, Reciprocating Bearing [45]{45}, Needle Cage [46]{46}, and Thrust Washer
(C) [47]{47} on Second Shaft (A) [43]{43}. Then, mount the Bevel Gear [48]{48} and the J-408 bevel
gear jig on Second Shaft (A) [43]{43} as shown in Fig. 7. Push Second Shaft (A) [43]{43} with a hand
press until the end of Second Shaft (A) [43]{43} contacts the end of the J-408 bevel gear jig. Then,
remove the J-408 bevel gear jig and mount it in reverse direction as shown in Fig. 8 and push Second
Shaft (A) [43]{43} with a hand press until the end of Second Shaft (A) [43]{43} contacts the end of the
J-408 bevel gear jig.
NOTE: After reassembly of the second shaft ass'y, check the following.
• Check that the Reciprocating Bearing [45]{45} rotates around Second Shaft (A) [43]{43}
smoothly.
• Check that the Reciprocating Bearing [45]{45} has an appropriate clearance by moving
it back and forth.
Fig. 7 • Reassembly of the second shaft ass'y (1)
J-408 bevel gear jig
Fig. 8 • Reassembly of the second shaft ass'y (2)
J-408 bevel gear jig
[47]{47}
[48]{48}
Special repair tool
J-408 Bevel gear jig
[45]{45}
[44]{44}
[46]{46}
End of [43]{43}
End of [43]{43}
-6-
Code No.
376748
Hand press
Hand press