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8-5. Shock-absorbing Mechanism
At the instance of releasing the bull point from the concrete by moving the main body up, the second hammer
contacts hammer holder (A) as shown in Fig. 7 then the cushion (damper (A)) provided between hammer holder
(A) and the front cover absorbs the striking force of the second hammer. Thus the durability of the Model
H 45MRY is greatly increased because the second hammer does not strike the tool retainer directly.
Fig. 7
Second hammer
Hammer holder (A)
Damper (A)
Fig. 8
Front cover
Vibration absorbing unit
Retainer sleeve
Switch handle
O-ring
O-ring
O-ring
O-ring
Housing
Cylinder crank case
Vibration absorbing unit
Oil seal
8-6. Sealed and Dustproof Construction
The cylinder crank case is sealed by five O-rings and an oil seal which serve to prevent leakage of the grease, as
well as to prevent dust and dirt from entering the mechanism (Fig. 8).
O-ring
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