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T ECHNICAL INFORMATION 53381
Subject Change of Cam A and Cam B.
For Models 8406,8416,8420V (Hammer Drill)
Description For improvement in endurance, Cam A and Cam B have been changed as fo1Iows
1) Change of shape
Cam A and B have been slightly changed in shape of contacting faces.
2) Change of hardness
Made both Cam A and Cam B harder by changing type of alloy and heat-treatment.
10
11
Note
Parts color has been changed from Black to Gray for indentification.
Interchangeability(I/C)
Item No. Current part Q'ty I/C New part Q'ty Note
Cam A Cam A
10 1 No 1
223069-9 223124-7 Interchangeable sa a set
Cam B Cam B
11 1 No 1
223070-4 223125-5
Implementation
8406 :Form Serial No. 25726E(Mar.1997)
8416 :Form Serial No. 255883E(Mar.1997)
8420V:Form Serial No. 33121E(Mar.1997)