Tempest AGA-20026-PMA
The Tempest AGA-20026 (McCauley OEM A-20026) is an FAA-PMA replacement idler gear stud for McCauley applications.
- Provides a precision support surface for the idler gear, helping maintain correct gear mesh and reduce geartrain wear.
- Supports reliable governor response by minimizing misalignment that can create debris and accelerate internal wear.
- Direct replacement cross reference: Tempest AGA-20026 replaces OEM A-20026 for McCauley governor service.
Geartrain integrity is critical in aircraft governors because small alignment problems can translate into RPM instability and shortened component life.
Installation notes
These notes are general guidance only; always refer to the approved maintenance and overhaul manual for complete installation procedures.
- Inspect the idler gear and any bearing surfaces for matched wear and replace as required.
- Verify backlash and end play per the approved governor overhaul procedures for the specific model.
Applications and fitment
Used on McCauley governors where OEM A-20026 is specified. Confirm eligibility by matching the OEM part number and reviewing governor model and serial number applicability in approved maintenance data.
Tempest AGA-20026 is the direct replacement for OEM A-20026. Match the OEM part number and confirm applicability by governor model and serial number in the approved maintenance data.
Pilot John International stocks Tempest PMA propeller governor parts for propeller overhaul shops, MROs, FBOs, and A&P mechanics supporting aircraft maintenance and ground support operations.
| General Information | |
|---|---|
| Part # | AGA-20026 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.02 lbs. |
| Product Dimensions | 1 x 0.3 x 0.3 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | A-20026 |
| System | McCauley propeller governor, geartrain |
| Tempest P/N | AGA-20026 |
| Type | Idler gear stud (fixed shaft) |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 310 , 421C |
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QUESTIONS & ANSWERS
Tempest AGA-20026 is a direct FAA-PMA replacement for McCauley P/N A-20026. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AGA-20026 Idler Gear Stud is designed for use in aircraft equipped with McCauley model DCFU290D7 propeller governors. Matching replacement parts to the correct governor model is essential to ensure proper fit, function, and reliable operation.
The Tempest AGA-20026 Idler Gear Stud provides a fixed mounting point for the idler gear, maintaining proper gear alignment and enabling smooth engagement of the governor’s oil pump. Ensuring the idler gear remains precisely positioned under load promotes consistent hydraulic pressure generation and reliable propeller speed control.
PJi offers the Tempest AGA-20026 as an FAA-PMA-approved replacement for the McCauley A-20026 idler gear stud. 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.
