J&M 44-50, Operating And Maintenance Manual

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MODEL 44-50
VIBRATORY
DRIVER/EXTRACTOR
II-5
OPERATING
INSTRUCTIONS
II. PREPARATION FOR OPERATION
C. RIGGING OF VIBRATOR
A steel wire rope sling must be connected to the lifting pin of the vibration suppressor. The
required strength of this sling depends on the capacity of the crane and the work to be
carried out. A safety factor of five is recommended. Several turns of a smaller diameter
cable will usually last longer than one turn of a larger diameter cable.
All rigging of either the hydraulic power unit or vibrator must be
done in accordance with standard rigging guide lines set forth
in ASTM standards; J&M does not assume responsibility for
incorrect rigging or proceedures.
D. CONNECTION OF HYDRAULIC CLAMP
The vibrator is usually shipped with the hydraulic clamp already attached.
If the clamp is not attached, it will be necessary to attach it to the bottom of the vibrator.
Orient the clamp to the vibrator with the clamp cylinder end (movable jaw) at the same end
of the vibrator as the hose chute is mounted. All eight (1.5-6UNC x 5.00) bolts must be in
place and torqued to approximately 2800 ft-lbs.
For caisson work, the caisson beam must be attached to the bottom of the vibrator and
tightened as above. Then slide the clamps into position on the caisson beam.