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Section 5 • Maintenance/Service
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Figure 5-37. Placement of Dial Indicator
3.
Place the Dial Indicator as square as possible on the
Gaterotor tooth as shown on Figure 5-37.
Dial Indicator
4. To measure the backlash (see Figure 5-38),
move the gaterotor with two fingers back and
forth rapidly several times while reading the dial
indicator to see what the displacement range is.
This displacement range will be the total backlash.
Contact Vilter Service Department if the measurement
is above the ranges shown on Table 5-13.
Table 5-13. Backlash Range
Figure 5-38. Measuring Backlash
Displacement
Range
Fingers Positioning to Move the Gaterotor Back
and Forth
Compressor Model
Normal backlash
VSM-97 thru VSS/VSH-1301
0.008” to 0.012”
VSS-1501 thru VSS-3001
0.008” to 0.015”
Summary of Contents for Vilter VSH
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