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 TM 55-1905-242-14
0193 00
REMOVAL (continued)
9.
Rotate the boom assembly slowly by hand. This will walk the racks (13) out of the base assembly.
10. Inspect all of the removed parts for signs of wear, damage, or deterioration.
11. If not already on, don chemical protective gloves and goggles, clean all disassembled parts with cleaning solvent, and
wipe them dry with wiping rags.
REPAIR
Repair of the slewing assembly is accomplished by the replacement of worn, damaged, or deteriorated components.
INSTALLATION
1.
Position the racks (13) so that one rack is on each side of the crane base. The teeth should be facing the centerline of the
crane base and both racks should be pushed in until they lightly contact the pinion gear inside the base.
2.
Rotate the boom slowly by hand to walk the racks (13) back into the crane base. Continue rotating the boom until both
racks are centered in the crane base.
3.
Install the gaskets (15 and 16), O-rings (17), and pistons (14) onto the racks (13) and secure them with the circlips (12).
4.
Apply a light coat of hydraulic fluid to the gaskets (15).
5.
Slide the cylinder barrels (10), one at a time, over the ends of the racks (13). It may be necessary to hold the boom
stationary while the cylinder barrels are being installed.
6.
Secure the cylinder barrels (10) to the crane base with the bolts (9).
7.
Connect the hydraulic lines (6) to the slewing cylinders (7) and the block (8) using the labels from step 5 of Removal as
a guide.
8.
Secure the hydraulic lines (6) to the mounting bracket (5) with the line clamp (4), nut (3), lockwasher (2), and bolt (1).
9.
Remove the lockouts and tagouts and check the operation of the system, ensuring that the crane slews smoothly
through its full range of motion. Slew the crane through its full range of motion six to eight times to work all the air from
the system.
10. Check the hydraulic fluid level and replenish as necessary.
11. Dispose of used hydraulic fluid, cleaning solvent, and contaminated materials in accordance with local regulations.
END OF WORK PACKAGE
01930193 00-3
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