Grove RT9130E - Page 243

Published 08-25-09, Control # 077-04 6-11
RT9130E SERVICE MANUAL SWING SYSTEM
6
GROVE
The inner race of the bearing is secured to the turntable by
40 1.25” Grade 8 bolts. The outer race of the bearing is
secured to the carrier frame by 36 1.25” Grade 8 bolts.
Torque Values
Torque all turntable bolts to a final torque of 2556 to 2770 Nm
(1885 to 2043 foot-pounds).
Using the 4 to 1 multiplier and no step wrenches, set the
torque wrench for 746 Nm (550 foot-pounds).
Tools Required
Special Turntable Bolt Torquing Tools (Figure 6-3) illustrates
and 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 2045 to 2217 Nm (1508 to 1635
foot-pounds) using the following sequence pattern:
using the following sequence pattern; 11, 31, 21, 1, 16,
36, 26, and 6 (Figure 6-2). Tools used are the socket,
multiplier, backlash adapter, necessary extensions, and
torque wrench.
3. Tighten the other 32 bolts, working to the same star
pattern, until all of them are torqued to 2045 to 2217 Nm
(1508 to 1635 foot-pounds).
4. Return to bolt 1 and torque all 40 bolts sequentially in a
clockwise direction to the final torque of 2556 to 2770
Nm (1885 to 2043 foot-pounds).
Outer Race Torquing
1. Extend and set the outriggers. Fully elevate the boom.
2. Torque eight bolts to 2045 to 2217 Nm (1508 to 1635
foot-pounds) using the following sequence pattern: 10,
28, 19, 1, 15, 33, 24 and 6 (Figure 6-2). Tools used are
the socket, multiplier, backlash adapter, necessary
extensions, and torque wrench.
3. Tighten the other 28 bolts, working to the same star
pattern, until all of them are torqued to 2045 to 2217 Nm
(1508 to 1635 foot-pounds).
4. Return to bolt 1 and torque all 36 bolts sequentially in a
clockwise direction to the final torque of 2556 to 2770
Nm (1885 to 2043 foot-pounds).
7382
36
FIGURE 6-2
37
38
39
40
2
3
4
5
35
34
33
32
31
30
29
28
27
6
8
9
10
11
12
13
20
21
22
23
24
25
26
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
33
32
34
35
36
1
2
3
6
7
5
8
9
4
14
15
16
17
18
19
7
1
Outer Race
Inner Race