Manitowoc 2250 MAX-ER 2000, Руководство оператора

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Reference
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MAINTENANCE 2250 MAX-ER 2000 OPERATOR’S MANUAL
6-14
Published 01-08-13, Control # 049-05
STEERING POST BEARING BOLT TORQUE
See Figure 6-14 for following procedure.
Torque Requirements
Lubrication
Before installing the turntable bearing bolts, lubricate the
threads of each bolt with Never-Seez (MCC 361010) or an
equivalent antiseizing lubricant.
Torque Values
Torque each turntable bearing bolt to 1,300 ft-lb (1 763 Nm).
When new bolts are installed, torque the bolts in two steps:
first to 450 ft-lb (610 Nm) and then to 1,300 ft-lb (1 763 Nm).
Torque Sequence
Torque the bolts in the numbered sequence shown. Torque
the bolts two at a time unless the sequence indicates one
bolt should be torqued. It does not matter which pair of bolts
is torqued first, but bolt torquing must allow for access to
grease points.
Torque Intervals
INITIAL 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 or more bolts are found
to be torqued to less than 1,300 ft-lb (1 763 Nm), replace
each loose bolt. Also replace the bolt on each side of each
loose bolt.
If at the yearly inspection interval four or more bolts for the
inner ring or five or more bolts in the outer ring are found to
be torqued to less than 1,300 ft-lb (1 763 Nm). replace all of
the bolts for the corresponding ring.
Replace all of the bolts every 7 years or 14,000 hours of
operation (whichever comes first) and each time a new
turntable bearing is installed.
WARNING
Loose or improperly torqued bolts can cause bolts or
turntable bearing to fail, possibly allowing upperworks to
break away from carbody or carrier.
FIGURE 6-14
A1152
5
8
4
11
6
1
9
7
10
2
12
3
14
15 13
7
11
8
12
2
10
13
9
3
5
1
4
6
Outer
Ring
Carrier
Frame
Grease Fitting
(9 places)
Hardened Bolts
6 in (152 mm) Hex Head
(27 outer ring)
Inner
Ring
Hardened Bolts
4 in (102 mm) Socket Head
(23 inner ring)