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M-SV-001-EN Rev. G
4. Using a Stepper Motor Driver, turn the worm shaft and Vane Drive assembly to position the
motor shaft so that locking set screw is aligned with the hole shown in "Figure 4-55 Set Screw
Removal". Use needle-nose pliers or similar tool to turn the worm gear if a Stepper Motor
Driver is not available.
5. Remove the set screw completely using a 2.5 mm hex bit to release the motor from the worm
gear.
Figure 4-55 Set Screw Removal
6. Remove the IGV Motor assembly by pulling away from worm shaft. Refer to "Figure 4-56 IGV
Motor Assembly Removal". Support the bottom of the IGV Motor to prevent damage to the
motor shaft. A light tap on the motor locating screw with a hammer may help release the
motor shaft from the worm gear.
Figure 4-56 IGV Motor Assembly Removal
7. Slide the Locking Collar Tool (P/N 100246) into the housing and over the worm shaft. Ensure
the drive pins are engaged in the Locking Collar. Refer to "Figure 4-57 Locking Collar Tool".
Figure 4-57 Locking Collar Tool
NOTE
The set screw may be difficult to release as it will have threadlocker applied. For proper engagement into the set screw, do not use
a ball-end hex wrench.
M5x8 Set
Screw
Locking
Collar Tool,
P/N 100246
Locking
Collar
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