To correct a soft foot condition on a motor mount, the recommended action is to

• A. Shimming all feet
• B. Replacing the motor mount
• C. Adding a leveling pad under all feet
• D. Shim one foot only

Answer: (D)

Soft foot happens when a motor mount doesn’t sit evenly on its base, so one or more feet don’t bear fully. The right fix is to address the exact feet that aren’t contacting and bring them into solid contact. If only one foot is off, adding a shim under that foot until it just touches will restore all four feet to bearing and reestablish proper alignment. Shimming every foot or adding a leveling pad under all feet can mask the real issue or create new misalignment, and replacing the mount isn’t needed for a soft-foot condition. After placing the shim, recheck that all feet are seated and confirm the shaft alignment, tightening the bolts in a proper sequence to maintain the seating.