Issue/Rev. 0.0 (10/18)
MN01047
•
Page 7
Clearance Checks
The clearances of the meter will need to be taken using
Feeler Gauges. A Feeler Gauge is a simple tool used
to measure gap widths (reference parts list
The Spider is necessary to accurately measure clearances.
It simulates the cover, while supporting the Rotor and
allowing access to the meter internals (reference parts
or the Tool section at the beginning of this
manual). Cover bolts should be used to secure the Housing.
Reference Table 4A and Table 4B for the required
clearances. Record the found clearances in the Meter
Clearance Record included with this manual (Section 5).
Rotor to Block Clearance
The clearances listed in Table 4A or 4B need to be checked
on each segment of the Rotor, at the inlet and outlet of
the meter and both sides of the block (Figure 11). If the
clearances need adjusted, this can be accomplished by
changing the shim located behind the Block (Figure 31).
Remove the Cover Bolts (Figure 9).
Once the Cover Bolts are removed, the Cover Assembly
can be vertically lifted off of the Housing. To remove the
Rotor Cover there are four threaded holes in the Rotor
Cover; one on each segment. Install four of the screws
to act as Jacking Screws.
Once the screws are installed, turn them clockwise
evenly. This will lift the cover off of the Rotor (Figure 22).
With the Cover Assembly removed, the internal components
can be viewed (Figure 10).
If necessary, clean and wash with degreaser. Soak
up any residual fluid and remove any contaminates
and/or degreasers.
Removing the HRE Board allows access to the Magnetic
Coupling Assembly (Figure 8). Inspect the Magnetic
Coupling for general condition and if there is damage,
replacement is necessary. Bearing should spin freely.
Figure 11 – Rotor to Block Clearance
Section III – Disassembly and Inspection (continued)
Figure 8 – Coupling Assembly
Coupling Assembly
Figure 9 – Remove Cover Bolts
Cover Bolt
Figure 10 – Internal Components
Housing
O-Ring
Block
Rotor
Measuring Chamber
Insert
JBH
