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Section 5 • Maintenance/Service
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Gaterotor Inspection
A) Gaterotor - Main Housing Shelf Clearance
Follow these steps to check the clearance between
the gaterotor and the shelf, which should be between
0.003” – 0.004”, see Figure 5-30.
1. Place a 0.003” feeler gauge between the gaterotor
teeth, as shown in Figure 5-31 (a) and (b).
NOTE
Make sure the feeler gauge stays in the opening between
the two teeth until it is on top of the shelf.
2. Without moving the feeler gauge, slowly rotate the
gaterotor so that the feeler gauge tip stays between
the gaterotor and the shelf. See Figure 5-31 (c).
CAUTION
Do not over rotate. If the rotor catches the feeler
gauge, a piece can break and fall into the rotor groove.
3. Gently pull the feeler gauge out in the direction
shown in Figure 5-31 (d).
Figure 5-30. Gaterotor and Shelf Clearance
Check for 0.003-0.004” (0.076- 0.102 mm) clearance
between gaterotor blade and shelf.
Figure 5-31. Gaterotor and Shelf Clearance Measurement Steps
(a) Feeler Gauge Placement (Side View)
(b) Feeler Gauge
Placement
(Top View)
(c) Tip Of The
Feeler Gauge Stays
Between Gaterotor
And Shelf While
Rotating
(d) Feeler Gauge
Must Be Pulled
Out In This Direc-
tion