Stabilizer Jack Screw Actuator Kit
Improved material for extreme corrosion resistance
McFarlane replaces the original steel components with duplex stainless steel (even better than monel) components for a long life even in a harsh saltwater environment.
- Wear and vibration resistance for longer life
- No rust, even in salt water
- Costs less than the standard parts
Precision bearing reduces free play and features extra low temperature grease for easy turning at low temperatures.
Improved Strength and Reliability
The original Cessna actuators use a 3/32" roll pin to attach the sprockets and retaining collars to the screw bars. These pins are critical as the front of the stabilizer would detach from the airframe if they failed. Although the original roll pins are technically strong enough, due to the nature of roll pins, they are prone to unpredictable failure. This is especially true if they are bent or damage during installation. To provide a more robust design, McFarlane redesigned the sprocket and retaining collar to allow the use of a 5/32" roll pin. This more than doubles the strength of the design. The screw and barrel are match machined for a precision fit.
Stabilizer jack screw actuator kit part number 1111 is an FAA-PMA/STC approved kit to replace all wear components for the stabilizer actuator assemblies for many Cessna 180, 182 and 185 aircraft. The convenient kit includes all parts required to replace the following Cessna parts in both the left-hand and right-hand actuators:
- 0310332 Sprocket
- 0432138-3 or S2295-25-185 Chain
- 0712500-7 Collar-retainer
- 0712500-10 Bushing
- 0712500-11 Screw bar
- 0712500-13 Barrel
- 0712500-19 Plug
- 0712502 Bushing, eccentric
- MS20201KP6A or AN201KP6A Bearing
- NAS561-3-8 Roll pin
Part number 1111 contains the following replacement components:
- 6463 Roller chain
- 6464 Connecting link
- 6458 Upper bushing
- 6459 Lower bushing
- 6460 Bearing
- 6461 Spring pin (can only be used as a replacement with McFarlane p/n 1111)
- Supplemental Type Certificates
- McFarlane STC Use Authorization
- Instructions for Continued Airworthiness
If the stabilizer is sluggish or jams, clean the barrel and screw jack and re-apply a coating of MIL-PRF-23827 low temperature grease. For complete instructions, see the Instructions for Continued Airworthiness.