Other Precautions - Hitachi WR 16SA Technical Data And Service Manual

8. OTHER PRECAUTIONS

(1) Check for cracks or other damage on the socket
Cracks or any other faults on the socket are very hazardous and decrease the tightening torque. Advise the
customer to ensure that there are no abnormalities on the socket before operation.
(2) Socket dimensions
Without fail, utilize an appropriate socket which matches the bolt dimensions. If the clearance between the
socket and the nut is large, it will not only cause insufficient tightening torque but could also easily cause
damage to the socket. Please refer to Para. 5-2 for appropriate socket dimensions.
(3) Hammering section lubrication
Grease (Doubrex 251, optional accessory) is utilized in the hammering section. Frequent or continuous use of
the tool will cause excessive temperature rise of the hammering section, resulting in depletion of the grease
and subsequent increased wear of components which will, in turn, cause loss of tightening efficiency.
Accordingly, it is necessary to periodically replenish the grease in the hammering section to ensure proper
lubrication of moving and sliding components.
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