Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
Manitowoc Published 05-26-17, Control # 238-02 8-5
MLC165-1 SERVICE/MAINTENANCE MANUAL UNDER CARRIAGE
8
8
TURNTABLE BEARING MAINTENANCE
See Figure 8-3 on the previous page.
Installation
The S in the outer ring (C) must be on the right side of the
carbody.
Two dowel pins are installed in the inner ring (D) as shown in
View A-A to locate the position of the inner ring on the
rotating bed. The S in the inner ring will be on the left side of
the of the rotating bed.
When installing the dowel pins (A, View A-A), secure them at
the dimension shown with Loctite
®
271 or equivalent thread
locking compound.
Torque Requirements
Lubrication
Before installing the turntable bearing bolts (B, View B-B),
lubricate the threads of each bolt and both sides of the
washers with "Never-Seez" or equivalent anti-seizing
lubricant.
Torque Values
Torque each turntable bearing bolt to 2,100 ft-lb (2,848 Nm).
When new bolts are installed, torque them in the numbered
sequence given in two steps:
• Initial torque - 600 ft-lb (814 Nm)
• Final torque - 2,100 ft-lb (2,848 Nm)
Torque Sequence
Torque three bolts at a time (two at item 19) in the numbered
sequence given.
Re-Torque Intervals
INITIAL OPERATION: re-torque all bolts to the specified
torque value after the first 50 hours of operation.
YEARLY OR EVERY 2,000 HOURS OF OPERATION
(whichever comes first): re-torque all bolts to the specified
torque value.
Bolt Replacement
If, at the yearly re-torque interval, one or more bolts are
found to be torqued to less than 1,680 ft-lb (2 278 Nm),
replace each loose bolt. Also replace the bolt and washer on
each side of each loose bolt.
If, at the yearly re-torque interval, 11 or more bolts in either
ring are found to be torqued to less than 1,680 ft-lb (2 278
Nm), replace all of the bolts and washers for the
corresponding ring.
Replace all of the bolts and washers each time a new
turntable bearing is installed.
DANGER
Crushing Injury Hazard
Two people are required to install and tighten the
turntable bearing bolts: an operator to operate swing
control and a mechanic to torque the bolts.
The mechanic must go inside of the rotating bed to torque
the inner turntable bearing bolts.
• Maintain constant communication between the
operator and mechanic while the mechanic is inside
the rotating bed.
• 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
the turntable bearing to fail, possibly allowing the rotating
bed to break away from the carbody.

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English