Reference

Brake and Wheel Components

• Are Tecnam P2012 wheel spacers and snap rings available separately?

  Spacers and snap rings are available individually to support maintenance and repair of Tecnam P2012 wheel assemblies.

• Can Tecnam P2012 wheel halves be purchased individually?

  Inner and outer wheel halves are available separately, allowing operators to replace only the required component based on condition and wear.

• Does McFarlane have a PMA approved Lock-O-Seal?

  Yes. McFarlane’s Lock-O-Seal (P/N MC800-001-6) is PMA approved for use on most single-engine Cessna aircraft. It is included in a popular brake master cylinder seal kit, P/N CBS-KT-1.

• Is a complete Tecnam P2012 wheel assembly available?

  The APS40-138B complete wheel assembly is available for operators needing a full replacement or overhaul solution.

• What does the Lock-O-Seal do in the brake master cylinder?

  The Lock-O-Seal helps control hydraulic fluid flow inside the master cylinder, allowing fluid replenishment when the brakes are released and sealing the system when brake pressure is applied.

• What is the difference between APS and OEM Tecnam P2012 wheels?

  APS wheel halves use aluminum construction instead of OEM magnesium and feature a spokeless design to improve durability and reduce cracking.

• What Tecnam P2012 wheel parts are available from APS?

  Available parts include inner wheel halves (APS161-11200), outer wheel halves (APS162-10200), complete wheel assemblies (APS40-138B), spacers (APS067-00600), and snap rings (APS155-00100 and APS155-00600).

• When should the Lock-O-Seal be replaced?

  Replacement is recommended when brake pressure cannot be maintained, hydraulic fluid leakage is observed, or during other master cylinder maintenance.

• Why is there discoloration on my brake bleeder valve?

  The fittings are covered with a special cadmium plating with a phosphate coating. The coating provides the best possible corrosion protection for use with magnesium brake castings in a wet environment. The white deposits are phosphate crystals that form from a phosphate sealing process which helps prevent corrosion when installed in magnesium alloy. The white deposits are not corrosion and will not harm the installation. If needed to reduce tightness during installation, the crystals can be softened using plain hot water and a tooth brush. Use the required thread sealants as specified by the appropriate aircraft service manuals.

• Why should Tecnam P2012 wheel halves be replaced?

  OEM magnesium wheel halves have reported cracking and durability issues, leading operators to replace them frequently. We recommend replacing them with the stronger aluminum FAA-PMA alternative from APS.