Sometimes hubs get stuck and the wheel doesn’t rotate properly. This article will explain how to fix this problem on 135mm solid axle hub, with solutions for either AUTOMATiQ (AHI) or Manual (MHI) hub interfaces.

Backward compatibility

This guide is compatible with legacy 135mm solid axle hubs (Commercial/CO, Sportive/SP, Cargo/CA, N360, N380, N380SE).

Problem diagnosis

Inspect the hub. Follow this guide if you detect:

• The hub or wheel does not spin or rotate properly.
• The CVP seems to be locked in mid-range or the ratio range seems to be limited.
• The hub seems locked up at either full overdrive (high ratio) or full underdrive (low ratio).

Solution

For a hub locked in mid-range:

• If the hub is within 2 years of age, return the hub using the warranty request form. enviolo hubs are closed containers and need to be sent back for closer inspection.

For a hub locked in full overdrive or full underdrive.

• You will need to unblock the hub with the help of combination pliers. The procedure depends on the transmission system you have - AutomatiQ or Manual.
• Choose the transmission system below and follow the steps:

AutomatiQ

Bikes with an AUTOMATiQ hub interface (AHI):

1. Disassemble the wheel from the bike frame.
2. Disassemble the hub interface from the wheel.
3. Unblock the hub using combination pliers.
   See detailed instructions below
4. Reassemble the hub interface on the 135mm wheel.
   See detailed instructions
5. Reassemble the AHI-equipped wheel on the 135mm bike frame.
   See detailed instructions
6. Calibrate the AHI using the AUTOMATiQ App.
   See detailed instructions

Manual

Bikes with a Manual hub interface (MHI):

1. Disassemble the wheel from the bike frame.
2. Disassemble the hub interface from the wheel.
3. Unblock using combination pliers.
   See detailed instructions below
4. Reset to full overdrive.
   See detailed instructions
5. Reassemble the hub interface on the 135mm wheel.
   See detailed instructions
6. Reassemble the MHI-equipped wheel on the 135mm bike frame.
   See detailed instructions

Unlocking the hub using combination pliers

Video instructions

Tools

• Combination pliers
• Vice

Unblock instructions

1. Mount the wheel with the left-side axle flats on a vice.
2. Use combination pliers to hold the shift driver.
   • The shift driver part is the spline nut closest to the hub (see photo below).
   • Be very careful not to damage the shift driver.
3. Spin the wheel clockwise.
4. At the same time as the wheel is spinning, carefully rotate the shift driver using the combination pliers:
   • Stuck in high gear - rotate the shift driver clockwise.
   • Stuck in low gear - rotate the shift driver counter-clockwise.

Be careful when unblocking the hub

While using the pliers, be careful not to damage the shift driver. Otherwise, it will be impossible to mount the hub interface later. The shift driver is one of the two splined nuts, the one that is closest to the hub.

Your wheel is ready to go

If you successfully follow the steps above, then the hub should be unblocked and the bicycle should be riding smoothly again.

If the problem persists, contact support.