Manitowoc Grove RT880E User Manual

Grove Published 11-10-2014, Control # 524-00 6-9
RT880E SERVICE MANUAL SWING SYSTEM
6
turntable bolts must be inspected for looseness and
retorqued to specifications.
The inner race of the bearing is secured to the turntable by
72, M24 Grade 10.9 bolts. The outer race of the bearing is
secured to the carrier frame by 72, M24 Grade 10.9 bolts.
Tools Required
Figure 6-4 lists the complete set of special tools required to
torque the turntable bolts.
Inner Race Torquing
1. Extend and set the outriggers. Fully elevate the boom.
2. Torque eight bolts to 80% of their specified torque value
using the following sequence pattern: 1, 40, 22, 58, 16,
52, 34, and 70; refer to Fasteners and Torque Values,
page 1-15 for proper torque value. Tools used are the
socket, multiplier, backlash adapter, necessary exten-
sions, and torque wrench.
3. Return to bolt 1 and torque all bolts sequentially in a
clockwise direction to their final torque specified. The
same tools are used as in Step 1.
Outer Race Torquing
Same as inner race.
FIGURE 6-3
5
4
3
6
7
NOTE: Bolt pattern
numbering
is the same
for the inner
and outer
race
8
9
10
1
2
19
18
17
16
11
12
13
14
15
20
21
22
23
24
25
26
27
28
31
30
29
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
49
48
50
51
53
52
54
55
65
64
63
62
61
60
59
58
57
56
72
66
71
70
69
68
67
REAR

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English