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T ECHNICAL INFORMATION

Subject Change of Tool Retainer
56550



For Models HM0810, HR3520, HR3811, HR3850, HR3851
Description As illustrated below, Tool Retainers have been changed for improvement of endurance
and for standardization.

CURRENT NEW
The shape of this portion
has been changed.




P/N 164942-3
P/N 164843-5 ( for repair only ) P/N 165227-0




Interchangeability(I/C)
Item No. Curret part Q'ty New part Q'ty I/C Note
036 Tool Retainer 1 Tool Retainer 1 <=
164942-3 165227-0
036 Tool Retainer 1 Tool Retainer 1 <=
164843-5 165227-0

Note
Interchangeability mark : <= means that the new part can be substituted for the current.

Implementation Note
HM0810:From your next order
HR3520:From Serial No.134454E ( September, 1998)
HR3811:From your next order
HR3850:From Serial No. 75182E ( September, 1998)
HR3851:From Serial No.42908E ( July, 1998)