Hitachi DH 50MRY Technical Data And Service Manual page 18

Mount the Clutch Spring [30], Lock Spring [27], Lock Sleeve [28] and Clutch [33] to the Cylinder [26].
Mesh the claw of the Lock Sleeve [28] with the claw of the Clutch [33] (thus the retainer sleeve ass'y is
made as shown in Fig. 8). Mount O-ring (D) [39], Thrust Washer (B) [40] and Bevel Gear [41] to the
Cylinder Case [37]. Then insert the retainer sleeve ass'y into the Cylinder Case [37] aligning the spline of
the Lock Sleeve [28] with the spline groove at the inner circumference of the Cylinder Case [37] (Fig. 8).
Fig. 8
Retainer Damper [17]
Damper Holder [24] Second Hammer [21]
Clutch Spring [30]
Thrust Washer (A) [16]
Lock Spring [27]
Retainer Sleeve [19]
Clutch [33]
Cylinder [26]
Retaining Ring D40 [13]
Ball Bearing 6008CM [14]
Lock Sleeve [28]
Sleeve [15]
Striker [31]
O-ring [20]
Thrust Washer (B) [40]
Spring Holder (B) [29]
Damper Washer [22]
Damper [23]
Needle Pin D8 X 6 [25]
Cylinder Case [37]
O-ring (D) [39] Bevel Gear [41]
!!"# $ % 4 1
(d) Vibration reduction mechanism
Apply Hitachi Motor Grease No. 29 to the Washer [89] and adhere it to the end face of the hole portion of
the Weight [88]. Insert the Weight [88] into the Base [91] and insert the Weight Pin [92]. At this time,
apply Hitachi Motor Grease No. 29 to the Weight Pin [92]. Sandwich the Base [91] between the Leaf
Spring [93] and the Spring Holder [95] engaging the convex portion of the Base [91] with the concave
portion of the Spring Holder [95], then secure it with the Seal Lock Hex. Socket Hd. Bolt M5 x 16 [96]. At
this time, apply Hitachi Motor Grease No. 29 to the tip of the Leaf Spring [93] where the Weight [88]
contacts. Insert the two Weight Bumpers [94] into the back of the Base [91] so that the rounded portion
of the Weight Bumper [94] contacts the Weight [88]. Wind two Cylinder O-rings (B) [87] around the
Weight [88] without twisting (Fig. 9).
Fig. 9
Cylinder O-ring (B) [87]
Tip of the Leaf Spring [93]
Weight [88]
Leaf Spring [93]
Spring Holder [95]
Base [91]
Washer [89]
Weight Pin [92]
Seal Lock Hex. Socket Hd. Bolt M5 x 16 [96]
Weight Bumper [94]
-15-