Table of Contents
Advertisement
Section 5 • Maintenance/Service
Main Rotor Bearing Radial Clearance Inspection
6.
Install dial indicator to the compressor frame and
zero indicator, see Figure 5-28.
Do not exceed maximum applied force. For
maximum applied forces of all compressor models,
see Table 5-10.
7.
Place lever arm and fulcrum underneath hub and
push hub upwards. Record measurement.
8.
If measurement is out of allowable tolerance shown
in Table 5-10, the bearing may need to be replaced.
Contact Vilter
Technical Support.
TM
Compressor
151, 181, 201,
152, 182, 202,
301, 361, 401
501, 601, 701
291, 341, 451,
751, 901
791, 891,
1051, 1201,
1501, 1551,
1801, 1851,
2401, 2601,
2801, 3001
5 – 36
NOTE
Table 5-10. Maximum Main Rotor Bearing Clearance
Max. Axial
Clearance
Model
in. (mm)
97-127
601
0.002
(0.051)
1301
2101
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Direction of shaft
movement.
Applied Force
Figure 5-28. Bearing Radial Clearance
Max. Radial
Max. Force at
Clearance
Hub/Shaft
in. (mm)
lbf (N)
0.004 (0.102)
100 (444)
0.006
100
(0.152)
(444)
0.007
150
(0.178)
(667)
0.007
150
(0.178)
(667)
0.006 (0.152)
200 (890)
0.006
300
(0.152)
(1335)
0.007
400
(0.178)
(1780)
0.006
600
(0.152)
(2670)
Side View
Shaft being pushed by use of lever.
Rigidly attach dial indicator.
Inspection
Max. Applied
Force
(36" Lever, 6" Pivot)
lbf (N)
20 (89)
20
(89)
30
(133)
30
(133)
40 (178)
60
(267)
80
(356)
120
(534)
Advertisement
Table of Contents
Troubleshooting
