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MODEL 220
HYDRAULIC
IMPACT HAMMER
IV.
MAINTENANCE AND ADJUSTMENTS
O. TENSIONING WIRE ROPES (CONTINUED)
3. When fully inserted, rotate the wire rope assembly until the anti-rotation roll pin
on the wire rope lower fitting slides into the hole in the bottom plate.
4. Thread the centering nut onto the threaded wire rope fitting until it is fully hand
tight. Be sure the machined extension on the nut fits into the hole in the lifting
bale. Repeat steps 1 thru 4 to all four wire rope assemblies.
5. Install the 1.00-8UNC pulling stud (P/N 160781) into the female threaded hole in
the wire rope assembly. Pulling stud must be screwed into the threaded hole as
far as it will go.
6. Slide the cylinder support frame (P/N 160739) over the pulling stud and position
on the lifting bale.
7. Slide tensioning cylinder (P/N 160783) onto pulling stud and secure with two
nuts (P/N 400051). Tighten nuts to remove "slack" from the wire rope. When
tightening this 1.00-8UNC nut, hold rope from turning with the flats on the
threaded rope fitting.
8. Connect a hydraulic hand pump (P/N 160785), with gage, to the tensioning
cylinder.
9. Operate hand pump, extending cylinder, until gage reads 8,500 PSI (586 Bar)
(15 ton).
10. Tighten the centering nut onto the lifting bale by hand.
11. Retract the extending cylinder, re-tighten the 1" nuts, and repeat steps 9 - 11
until correct tension (step 9) is achieved.
12. Remove the tensioning cylinder, pulling stud and cylinder support frame.
13. While holding the centering nut, thread the locking nut onto the threaded rope
fitting and fully tighten against the centering nut. Repeat steps 5-13 to all 4 wire
rope assemblies.
THE TOOLS LISTED ABOVE ARE INCLUDED IN WIRE ROPE TENSIONING KIT
(P/N 810713).
IV-11
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