M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
17-9. SWING DRIVE REMOVAL/REPAlR/INSTALLATION.
This task covers:
f. Follow-on Maintenance
Spanner Socket, Appendix B, Figure 11
MOS 63W, Wheel vehicle repairer (2)
MOS 44B, Metal worker repairer
TM or Para
Swing drive brake
Item 6, Appendix C
Compound, sealing and thread locking,
Item 26, Appendix C
Compound, sealing, pipe thread,
Item 29, Appendix C
Solvent, drycleaning, Item 57, Appendix C
Special Environmental Conditions
General Safety Instructions
Level of Maintenance
Attach suitable lifting device.
Remove nine screws (1) and
Remove swing drive (3).
DO NOT grind or sand painted
equipment without high-efficiency air
purifying respirators in use.
If new swing drive is to be used, wedges
must be ground off and rewelded. If
existing swing drive is to be repaired,
wedges do not need to be removed.
Using a grinder to remove
weld, remove two wedges (4)
from frame ring (5).