Manitowoc 16000 User Manual

Reference Only
Manitowoc Published 05-03-17, Control # 228-03 8-1
16000 SERVICE/MAINTENANCE MANUAL UNDER CARRIAGE
8
SECTION 8
UNDER CARRIAGE
TURNTABLE BEARING
Installation
When installing a turntable bearing, align the dowel pin holes
in the inner ring with the dowel pins in the underside of the
rotating bed.
Bearing Bolt Torque
Lubrication
Before installing the turntable bearing bolts, lubricate the
following with “Never-Seez” or an equivalent anti-seize
compound:
• Threads of each bolt
• The underside of the head of each bolt
• Both sides of each washer
Torque Values
Torque each turntable bearing bolt to 3,525 Nm (2,600 ft-lb).
When new bolts are installed, torque the bolts in two steps:
• First, torque them to 1,356 Nm (1,000 ft-lb).
• Then, torque them to 3,525 Nm (2,600 ft-lb).
Torque Sequence
Torque the bolts, three at a time, in the numbered sequence
given in Figure 8-1
. Torque one ring at a time.
Torque Intervals
At the beginning of crane operation, torque all bolts to the
specified value after the first 50 hours of operation.
Yearly or every 2,000 hours of operation, whichever comes
first, torque all bolts to the specified value.
Bolt Replacement
If, at the yearly inspection interval, one to 16 bolts are found
to be torqued to less than 2,820 Nm (2,080 ft-lb), replace
each loose bolt and washer. Also, replace the bolt and
washer on each side of each loose bolt.
If, at the yearly inspection interval, 17 or more bolts in either
ring are found to be torqued to less than 2,820 Nm (2,080 ft-
lb), replace all of the bolts and washers for the corresponding
ring.
Replace all bolts and washers each time a new turntable
bearing is installed.
DANGER
Crushing Injury Hazard!
Two people are required to torque the turntable bearing
bolts: an operator to operate the swing control and a
mechanic to torque the bolts.
To torque the inner turntable bearing bolts, use the
following procedure:
• The mechanic shall enter the carbody
• Maintain constant communication between the
operator and mechanic while the mechanic is inside
the carbody.
• The operator shall not swing the upperworks until
instructed to do so by the mechanic.
• The mechanic shall stay well clear of moving parts
while the upperworks are being swung to position the
bolts.
WARNING
Bolt Failure!
Loose or improperly torqued bolts can cause the bolts or
turntable bearing to fail, possibly allowing the upperworks
to break away from the carbody.

Manitowoc 16000 Specifications

General

Brand	Manitowoc
Model	16000
Category	Construction Equipment
Language	English