spring is not properly sealed or the screw cup and/or screw
retaining groove is worn beyond acceptable limits.
E. Check screw cup for proper operation. Screw cup must rotate
freely in the screw and swivel 3 degrees in all directions. Spring
must return screw to “centered” position when deflected.
WARNING: If screw cup can be removed by hand or if the spring
does not center the screw cup, remove clamp from service until
the unit is repaired.
Step 7
SWIVEL JAW
A. To remove swivel jaw, tighten internal set screw until the swivel jaw
lifts free of the swivel block. Removal of the swivel jaw destroys the
internal wave spring. The used wave spring must be discarded and
replaced by a new unit.
WARNING: Discard used wave spring. Do not attempt to reas-
semble clamp with old spring. Always install new wave spring af-
ter disassembly of swivel jaw.
B. Inspect swivel jaw for fractures, damage and wear. Serrations must
be sharp and free of imperfections and foreign matter. Retaining
spring groove must be free of displaced metal, worn edges, and for-
eign matter.
WARNING: Replace worn, dull or damaged swivel jaws.
C. To install swivel jaw, insert lubricant into the recess of the swivel
block. The recommended lubricant is Molybdenum Disulfide
grease. Install new wave spring into retaining groove of the swivel
jaw. The spring must be fully retained in the groove width and cen-
tered about its axis. Lightly lubricate set screw threads with Molyb-
denum Disulfide grease. Install set screw. Set screw must be fully
contained within the body of the swivel jaw and not protrude from
either side. Press the swivel jaw into the swivel blocks spring re-
taining groove.
