Hitachi DH 40MEY Service Manual page 11

(6) Reassembly of the low vibration mechanism
(a) Apply specified grease to the inner periphery of the metals in the Crank Case [89] and fill the space
between the metals with the specified grease (0.5 to 1.0 g). Specified grease is required to maintain
the low-vibration effect.
Fig. 13
Fill this space with
specified grease
(0.5 to 1.0 g).
Metals
(b) Fit the Feather Key [94] to the Weight Shaft [93], insert the Weight [91] and Washer [90], and then
fit the assembly to the Crank Case [89]. Wipe off all excessive grease after inserting the Weight
Shaft [93]. The Weight Shaft [93] can be inserted into the Crank Case [89] in any posture. Mount
the Washer [90] to the opposite side of the shaft, insert the Feather Key [94], Weight [91], and
Washer M5 [108] in this order, and then secure these parts with Nut M5 [107].
NOTE: Do not alter the Washer [90] assembly order. Note that you cannot mount the Weight
[91] after first inserting the Feather Key [94].
Fig. 14
[94]
[93]
[90]
[91]
[89]
Apply specified
grease to the inner
periphery of the
metals.
-10-
[93]
[94]
[90]
[108]
[107]