Snorkel SB126J - Manual (Page 39)

Chapter 7 – Prestart Inspection
SB126J – 0192278 33
Figure 7.21 – Bottom of Main Boom at Tip End
Figure 7.22 – Base End of Main Boom
Visually inspect the Belleville washers. They should be
collapsed with no gaps between any washer. The wash-
ers are located on each wire rope behind the nut at each
end of the wire (refer to Figures 7.23 and 7.24).
Figure 7.23 – Bottom of Main Boom at Tip End
Figure 7.24 – Base End of Main Boom
Fasteners
Visually inspect all fasteners to see that none are miss-
ing or loose.
Pay particular attention to all of the bolts, nuts, rollpins,
collars and snap rings that connect the booms and
cylinders. They should all be present, tight and not
damaged in any way.
Raise the main boom to access the rotation bearing
bolts in the turntable (refer to Figure 7.25).
Figure 7.25 – Rotation Bearing Bolts
Belleville washers Whiffl es
Whiffl e
Whiffl e
Belleville washers