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Part # MC0743624-2
ASSEMBLY, Shimmy Dampener
Product Details
Specifications
- Approval
- FAA PMA
- Condition
- New
- Manufacturer
- McFarlane Aviation
- Dimensions
- L: 12 x W: 4 x H: 4 in
- Weight
- N/A
- Unit of Measure
- Each
- McFarlane Part Number
- MC0743624-2
Product Description
Shimmy Dampener Assembly
Fully repairable and 5x more dampening action than the Lord throw-away rubber dampener! Direct replacement for P/N 0743624-2 for many Cessna 206 and 207.
Improved design for consistent dampening action!
- Quicker steering response
- Oversize shaft for rigid strength
- Wear resistant hard anodized housing
- Temperature/altitude compensated hydraulics for low maintenance
- Fluid level can be checked on or off the aircraft
- Go longer without servicing!
Temperature compensated hydraulics
- Almost no service required
- Even the first minor movements are dampened
- Consistent dampening action
- Vastly improved oil retention
Looking for replacement components for your McFarlane Shimmy Dampener?
Seal Kit P/N SDKT-8 - Designed specifically to re-seal McFarlane shimmy dampeners! Contains all required O-rings and back up rings.
To repair your fluid dampener, go to Seal and Repair Kits.
Floating Piston Extraction Tool 1530-2 also available!
Can You Stop Nose Gear Shimmy? by Dave McFarlane
WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources
Eligible Aircraft
| Make | Model | Start S/N | End S/N | Quantity Per Aircraft | Location | Eligibility Chart |
|---|---|---|---|---|---|---|
| Cessna 206H | 206H | S/N 20608001 – 206999999 | 206999999 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna P206B | P206B | S/N P206-0307 – P206-0419 | P206-0419 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna P206C | P206C | S/N P206-0420 – P206-0519 | P206-0519 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna P206D | P206D | S/N P206-0520 – P206-0603 | P206-0603 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna P206E | P206E | S/N P20600604 – P20600647 | P20600647 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna T206H | T206H | S/N T20608001 – T206999999 | T206999999 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206B | TU206B | S/N U206-0657 – U206-0914 | U206-0914 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206C | TU206C | S/N U206-0915 – U206-1234 | U206-1234 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206D | TU206D | S/N U206-1235 – U206-1444 | U206-1444 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206E | TU206E | S/N U20601445 – U20601700 | U20601700 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206F | TU206F | S/N U20601701 – U20602199 | U20602199 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206F | TU206F | S/N U20602200 – U20603521 | U20603521 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna TU206G | TU206G | S/N U20603522 – U20607020 | U20607020 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206B | U206B | S/N U206-0657 – U206-0914 | U206-0914 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206C | U206C | S/N U206-0915 – U206-1234 | U206-1234 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206D | U206D | S/N U206-1235 – U206-1444 | U206-1444 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206E | U206E | S/N U20601445 – U20601700 | U20601700 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206F | U206F | S/N U20601701 – U20602199 | U20602199 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206F | U206F | S/N U20602200 – U20603521 | U20603521 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna U206G | U206G | S/N U20603522 – U20607020 | U20607020 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna 207 | 207 | S/N 20700001 – 20700362 | 20700362 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna 207A | 207A | S/N 20700363 – 20700788 | 20700788 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna T207 | T207 | S/N 20700001 – 20700362 | 20700362 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
| Cessna T207A | T207A | S/N 20700363 – 20700788 | 20700788 | Quantity Per Aircraft 1 | Location Shimmy Dampener Assembly | Eligibility Chart 7644 |
Cross Reference
Reference only: Please verify the product is eligible for your aircraft before adding to your cart.
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0743624-2
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SE-1609-3
FAQs
I installed a torque link kit and serviced my shimmy dampener; why do I still have a shimmy problem?
There are many components all connected to keep the nose gear in line. If one component is worn or out of tolerance it can cause shimmy problem. Reference Dave McFarlane’s article: Can You Stop Nose Gear Shimmy instructions and suggestions.
Overlooked items also include the rod ends, shimmy dampener mounting and attachment, shimmy dampener, and steering collar. The steering collar is where the steering rod tubes connect and the upper torque link is attached to, along with the shimmy dampener on most aircraft. If the steering collar has play vertically and laterally and is allowed to tilt; that will cause excessive wear and force on the torque links, steering, and strut components. There are three different thicknesses of shims to help get the collar in place.
Ensure that the shimmy dampener is working properly with no dead spots in dampening action. The cylinder could be worn on the inside or on a piston that warrants replacement of components. All of the nose strut components are tied to each other and any movement is transmitted through to the tire and back through the dampening system, which if remedied will continue to be more pronounced.
What does temperature compensated mean?
When hydraulic oil changes temperature, the volume of the oil also changes. This volume change from a temperature reduction will create a vacuum in the oil chamber of the original Cessna uncompensated shimmy dampener. This vacuum will cause the oil to vaporize giving the oil a foamy expanded mixture that is compressible. The shimmy dampener action is then drastically degraded. An increase in temperature will increase the oil volume causing a drastic pressurization of the dampener oil chamber. This pressure will force small quantities of oil past the dampener shaft seals. The decrease in oil will then aggravate any temperature reduction with increased chamber vacuum and related oil vaporization. This process explains why continuous servicing of the original shimmy dampener is required.
The temperature compensation system works by having a small chamber of oil that is spring pressurized through a very small passage into the main dampening restrictive orifice of the shimmy dampener. The spring loaded oil chamber can adjust for oil volume changes as temperature changes. A similar system is built into your car shock absorbers. The temperature compensated hydraulic system requires very little service over extended periods of time and assures stable shimmy dampening action.
Why is a hydraulic shimmy dampener better than a rubber dampener?
A rubber based dampener is continuously fatiguing the rubber components as it changes direction of motion. The rubber system depends on stable friction of the rubber riding in a metal tube. This is very difficult to achieve over extended usage. There are inherent differences in static friction of rubber and dynamic friction of rubber that affect dampening performance. Long term use changes the performance of the dampener caused by all of these un-repairable factors. The hydraulic system works in a film oil with stable performance for long periods of time and it is totally repairable.