88 of 282 M-SV-001-EN Rev. G
3. Ensure the IGV position indicator magnet is in place in the IGV Throat assembly. Refer to
"Figure 4-64 IGV Position Indicator Magnet".
Figure 4-64 IGV Position Indicator Magnet
4. Place the IGV Throat assembly into the IGV Housing orientating the IGV Throat threads directly
below the IGV Motor Mount.
5. Add one (1) drop of threadlocker (Loctite 243 blue or equivalent) to the IGV Throat fastener
threads and install. Torque to 5 Nm (44 in.lb.).
6. Rotate the outer ring of the drive assembly and ensure that the guide vanes move freely. The
assembly must rotate over a span where the vanes are open (perpendicular to gas flow) and
fully closed.
7. Fit the upper (large) bearing to the worm gear and install the snap ring. Refer to "Figure 4-65
Large Worm Gear Bearing Installation".
Figure 4-65 Large Worm Gear Bearing Installation
8. Install the worm gear into the housing by “screwing” the worm gear along the IGV Throat Gear.
Locate the worm gear shaft into the bottom (small) bearing.
9. Place the threaded Locking Collar on the four (4) pins of the Collar tool and install into the
housing.
NOTE
Ensure the flat side of the collar is against the tool.
10. Turn the Locking Collar counter clockwise and torque to 5 Nm (44 in.lb.). Refer to "Figure 4-66
Locking Collar Installation" on page 89.
NOTE
Locking collar is a left-hand thread. Turn counter-clockwise when viewed from motor end to tighten (do not use threadlocker on
collar).
Magnet
Worm Gear
Large Worm Gear
Snap Ring
Large Worm Gear
Bearing
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