Tempest AG34-828-7-PMA
The Tempest AG34-828-7 (Garwin OEM 34-828-7) is an FAA-PMA replacement idler gear stud for Garwin applications.
- Provides a precision running surface for the idler gear to help maintain correct gear mesh and reduce geartrain wear.
- Supports stable governor operation by minimizing wobble and misalignment that can create debris or inconsistent response.
- Commonly replaced during overhaul if the stud shows scoring, fretting, corrosion, or out of tolerance wear.
Geartrain integrity is critical in aviation governors because small alignment issues can grow into noticeable RPM instability and accelerated wear.
Installation notes
Refer to the applicable governor and engine maintenance manual for full installation procedures, torque values, and inspection requirements.
- Inspect the idler gear and any bearing surfaces for matched wear and replace as needed.
- Verify backlash, end play, and assembly requirements per the approved governor overhaul procedures.
Applications and fitment
Used on Garwin governors where OEM 34-828-7 is specified. Confirm eligibility by matching the OEM part number and reviewing governor model and serial number applicability in the approved maintenance data.
Tempest AG34-828-7 is the direct replacement for OEM 34-828-7. 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 # | AG34-828-7 |
| Manufacturer | Tempest |
| Shipping Information | |
|---|---|
| Product Weight | 0.02 lbs. |
| Product Dimensions | 1 x 0.8 x 0.5 in. |
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
| Specifications | |
|---|---|
| Approval | FAA-PMA replacement part |
| OEM P/N | 34-828-7 |
| System | Garwin propeller governor, geartrain |
| Tempest P/N | AG34-828-7 |
| Type | Idler gear stud (fixed shaft) |
Customers also viewed
AIRCRAFT COMPATIBILITY
| Compatible Aircraft* | |
|---|---|
| Cessna | 185 |
PRODUCT REVIEWS
This item does not have any reviews yet.
QUESTIONS & ANSWERS
Tempest AG34-828-7 is a direct FAA-PMA replacement for Garwin P/N 34-828-7. Always verify compatibility with your specific propeller governor model and applicable maintenance documentation before placing an order.
The Tempest AG34-828-7 Idler Gear Stud 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 AG34-828-7 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 AG34-828-7 as an FAA-PMA-approved replacement for the Garwin 34-828-7 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.
