--- 9 ---
8. REFERENCE INFORMATION
8-1. Sealed and Dustproof Construction
The cylinder case section and housing (crank case side) are sealed by four (4) O-rings, a holder seal and a seal
ring. These seals serve to prevent leakage of the grease, as well as to prevent dust and dirt from entering the
mechanism.
Fig. 3
Housing
Seal ring
Cylinder case
O-ring
(64.4 mm (2-17/32") inner dia.)
Holder seal
O-ring
(23.7 mm (15/16") inner dia.)
O-ring (44.4 mm (1-3/4") inner dia.)
O-ring
(59.6 mm (2-11/32") inner dia.)
Gear cover
8-2. Vibration-Absorbing Construction
(1) Vibration-absorbing construction
The handle holders which secure handle (B) and the side handle to the housing can be smoothly turned
thanks to the handle pins inserted in the slotted through holes at both sides of the housing. The handle pins
are supported by dampers (B) fitted into the slotted through holes so that they can be moved in the axial
direction of the tool. Two blocks of rubber (handle dampers (B)) are inserted between the housing and the
handle holder. By pressing the handle portion, the handle holder turns and handle damper (B) is compressed
and sheared according to the movement of the main body. Damper (B) is also compressed when it comes in
contact with the handle pin. Thus, vibration transmitted from the main body to the handle portion is minimized.
The four cylindrical rubbers (handle dampers) cushion the shock generated between the housing and the
handle holder when the handle holder returns to the original position. The T-shaped handle with shock
absorber improves downward chipping and demolishing performance and reduces operator's fatigue for a
long-time operation.
