Manitowoc National Crane NBT30H-2 Service Manual

6
National Crane 03-20-2019 Control # 613-06 6-11
NBT30H-2 SERVICE MANUAL SWING
BEARING REPLACEMENT
Removal
1. Fully extend and set the outriggers enough to take up
the slack in the pads.
NOTE: Do not raise the machine on the outriggers.
2. Rotate the boom to about 10° off the rear position so that
the boom is clear of the boom rest.
NOTE: The lift cylinder pins need to be accessible from the
truck deck.
3. Elevate the boom slightly and shut down the engine.
4. Tag and disconnect the battery cables.
5. Remove the boom and lift cylinder following the
procedures outlined in See “Boom Removal from Truck”
on page 4-4.
6. Attach a suitable lifting device to the turret. Remove any
slack in the sling. Do not pull up on the turret.
7. Remove all bolts and washers from the outer race of the
swing bearing.
FIGURE 6-9
1
2
3
4
5
6
7
8
DANGER
Crushing Hazard!
Ensure the lifting device is capable of supporting the
boom assembly. Death or serious injury may result.
WARNING
Crushing Hazard!
Ensure blocking material can support the turret. Serious
injury or damage to the turret may result.
!
!

Manitowoc National Crane NBT30H-2 Specifications

General

Brand	Manitowoc
Model	National Crane NBT30H-2
Category	Construction Equipment
Language	English