122 Model 5525-6025-6625 Parts & Specifications Manual Part # 99903688
Turntable Bearing Thread Tightening
Sequence
Refer to the turntable bearing thread tightening diagram below for proper tightening/torquing
sequence of the turntable bearing to the crane base and crane mast. The total quantity of cap
screws varies dependent on crane model.
Number 1 can be assigned to
any capscrew if the sequence
remains the same in reference
to number 1.
WARNING
TIGHTENING PROCEDURE
1 Refer to the Torque Data Chart to determine the proper torque value to apply to the size of
capscrew used.
2 Follow the tightening sequence shown in the diagram. Note that the quantity of capscrews
may differ from the diagram, but the sequence must follow the criss-cross pattern as shown
in the diagram.
3 Torque all capscrews to approximately 40% of the specified torque value, by following the
sequence.
(EXAMPLE: .40 x 265 FT-LB = 106 FT-LB)
(EXAMPLE-METRIC: .40 x 36 KG-M = 14.4 KG-M)
4 Repeat Step 3, but torquing all capscrews to 75% of the specified torque value. Continue to
follow the tightening sequence.
(EXAMPLE: .75 x 265 FT-LB = 199 FT-LB)
(EXAMPLE-METRIC: .75 x 36 KG-M = 27 KG-M)
5 Using the proper sequence, torque all capscrews to the listed torque value as determined
from the Torque Data Chart.
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