Garwin 34-828-12, Thrust Race Bearing - Tempest PMA
Tempest AG34-828-12-PMA
The Tempest AG34-828-12 (Garwin OEM 34-828-12) is an FAA-PMA replacement thrust race bearing for Garwin applications.
- Provides a precision thrust running surface to reduce friction and wear in thrust loaded interfaces inside the governor.
- Helps maintain internal alignment and clearances that influence responsiveness and RPM stability.
- Common overhaul replacement when surface damage, brinelling, or wear patterns indicate reduced bearing performance.
Thrust surface condition is a key factor in governor stability and repeatability, especially in aviation environments where cleanliness, vibration, and duty cycles are demanding.
Installation notes
Always consult the applicable maintenance manual for the full installation procedure before performing this work.
- Do not install if there is any scoring, pitting, or handling damage on the thrust surface.
- Verify correct assembly stack up and end play per the approved governor overhaul data.
Applications and fitment
Used on Garwin governors where OEM 34-828-12 is specified. Confirm compatibility by matching the OEM part number and verifying governor model and serial number eligibility using approved maintenance data.
Tempest AG34-828-12 is the direct replacement for OEM 34-828-12. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International carries Tempest PMA propeller governor parts for FBOs, propeller overhaul shops, and aviation technicians supporting aircraft maintenance and ground support work.
| General Information | |
|---|---|
| Part # | AG34-828-12 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.01 lbs. |
| Product Dimensions | 0.8 x 0.8 x 0.1 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part (per distributor listing) |
| OEM P/N | 34-828-12 |
| System | Garwin propeller governor |
| Tempest P/N | AG34-828-12 |
| Type | Thrust race bearing |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 185 |
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QUESTIONS & ANSWERS
Tempest AG34-828-12 is a direct FAA-PMA replacement for Garwin P/N 34-828-12. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AG34-828-12 Thrust Race is designed for use in aircraft equipped with Garwin 38-828 series propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AG34-828-12 Thrust Race provides a hardened surface for thrust bearing elements, ensuring smooth axial load transfer and minimizing wear under rotational forces. Maintaining proper load paths within the propeller governor supports consistent RPM control and long-term reliability of moving components.
PJi offers the Tempest AG34-828-12 as an FAA-PMA-approved replacement for the Garwin 34-828-12 thrust race. View our full selection of Tempest propeller governor parts to find the correct component for your application.
For a deeper look at how propeller governors work, why proper maintenance matters, and how to identify compatible replacement components, refer to our Ultimate Guide to Aircraft Propeller Governor Maintenance.
