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O-Ring Replacement Instructions for NEO Series Smart Trainers
If you are experiencing a grunting or a whump-whump type of sound coming from your Tacx NEO series trainer while you ride you will likely need to replace the O-ring found behind the NEO disc. This FAQ is designed to help you complete steps for the following Tacx smart trainers:
Tacx® NEO
Tacx® NEO 2
Tacx® NEO 2T
Tools Required:
S0057 O-ring
NEO Disc Extractor
4mm and 5mm Allen Key
Adjustable Wrench
O-Ring Replacement Instructions:
Remove the Disc using the NEO Disc Extractor.
See first 1:30 of video below
Once the disc has been removed, you will have access to the O-ring located at the base of the axle hub. The O-ring is circled in the photo below in red.
NEO Users: place the O-ring in front of the preinstalled ring
NEO 2 and 2T Users: remove existing O-ring and replace it with the new O-ring
To further prevent noise, ensure the size 4 Allen bolts shown below are tightened to 10 Nm.
6 bolts on the internal coil housing
6 bolts on the trainer's non-drive side
Reinstall the disc.
See 1:30 - 2:35 of video below.
Tighten the 6 bolts on the disc to 10Nm.
How to Remove The NEO Disc