What if there is some resistance to the MC0511242-1 Seat Stop entering the hole in my new McFarlane manufactured Seat Rail?
Installation of the McFarlane Seat Stop P/N MC0511242-1 may require the removal of extra material from the seat rail where the seat rail hole breaks through the vertical web. Material removal may be accomplished with a small file or other deburring tool. Do not remove material from the seat stop when attempting to install. Refer to Cessna/Textron service information for correct seat stop location.
What is the standard hole depth for drilling additional holes in seat rails?
Determine which extrusion is used: STE101 and STE102 - Standard hole depth drilled on the roller flange is .330” and standard diameter is .277”. STE103 and STE104 - Standard hole depth drilled on the roller flange is .280” and standard diameter is .277”.
Are templates required for Piper seat rails?
No, McFarlane does not provide templates for installing seat rails on Piper aircraft because the rail is riveted to the floor of the airplane, making installation easy by riveting directly from under the airplane.
What is in the McFarlane flap roller kits?
Flap Roller Kits contain all of the rollers needed to complete one aircraft. Flap Roller Upgrade Kits include all of the components, forward wear washers (P/N MCS1450-3S10-032), aft service kit (P/N MCSK100), and hardware needed to replace the flap rollers and hardware associated with the rollers, along with Cessna SEB95-3 Rev. 1 for instructions to inspect flap support arms for wear.
How does the Marsh Brothers roller simplify the installation?
Marsh Brothers’ roller is a flanged roller design, meaning that there is no separate phenolic and steel washer. Additionally, instead of a Teflon washer, Marsh Brothers’ design incorporates an AeroTough® GF washer that is an integral part of the roller. This results in a single roller bearing to be installed with the standard bolt, nut and washer hardware versus many parts included in the OEM roller.
What does P/N MCSK100 roller upgrade kit do?
The Cessna Service Bulletin SEB95-3 describes damage to the flap support arms from the edges of the rollers cutting into them as the flap rollers rotate. Cessna fixed the roller end wear problem on the forward roller locations by installing a thin stainless steel wear washer between the roller and the flexible flap arms.
The aft roller location is more difficult as it is up in the flap structure and is rigid. The flap support arms will not flex open for the addition of wear washers like the forward roller location. The aft long roller position has the same wear problem as the forward roller locations. Since there is not room to install a wear washer with the existing roller, McFarlane designed a roller slightly shorter in length that allows room for wear washers on each end of the roller. The wear washers are designed with a step in them to make them an assembly that is easier to install.
Note that the upgrades do not change the aft narrow roller and shims/spacers that control the flap lateral end play. P/N MCSK100 only replaces the unprotected long aft roller(s) on each flap. Replacing the flap arms that have excessive wear is very expensive and time consuming. MCSK100 stops any further flap support arm wear.
Can use blind rivets (e.g., CherryMAX or CherryLOCK) when replacing my seat rails?
We do not recommend using blind rivets for seat rail installation.
How should I clean the Marsh Brothers flap rollers?
The rollers are highly resistant to incursion by debris, dust, and other particles. Should the ingestion of various particles become an issue, the aircraft operator can use the same cleaners, detergents, and solvents approved by the aircraft manufacturer. Marsh Brothers have performed compatibility tests with no detriment of the roller’s integrity.
What is the issue with the OEM flap roller?
It is a traditional sealed grease packed needle roller bearing that relies on supplemental lubrication. Over time the grease dries out resulting in a degradation in the rollers performance.
Where do I install P/N MCSK100 flap roller service kit?
P/N MCSK100 Flap Roller Service Kit replaces the aft wide roller assembly, and only the aft wide roller. Please consult your applicable Service/Maintenance Manual and Illustrated Parts Catalog for the proper location for your specific aircraft, and the STC SA01074WI.
Why is the OEM roller installation complicated?
The OEM design uses many elements including a needle roller, a separate thrust washer, and a separate Teflon washer. Furthermore, there are two separate thrust washers, a steel one and a phenolic one.
How does the Marsh Brothers roller address the issue of damage to the sides of the tracks?
Instead of Teflon, Marsh Brothers’ rollers employ an AeroTough® GF thrust washer between the roller flange and track sidewall. AeroTough® GF is tougher than Teflon and will not herniate, crack and dislodge under load.
What makes the Marsh Brothers roller better than the OEM?
Marsh Brothers’ self-lubricating roller has no metal rolling element. Instead, it utilizes a proprietary self-lubricating polymer called AeroTough® GF. Since AeroTough® GF does not rely on supplemental lubrication, it will never dry out and degrade.
Can I replace rivets with screws when replacing my seat rails?
Yes, but there are some restrictions. The screws must be structural screw with a minimum tensile strength of 50ksi. See SAIB CE-90-03R2 for more details.
How do I lubricate my flap rollers
To lubricate use a lightweight oil. Lubriplate or motor oil works well. Lubriplate is a light weight, patroleum base, very oily grease.
How do I get all the parts lined up and the bolt in place at the aft roller locations while working in the small flap hole?
We sell tool P/N 970 to facilitate the installation of the aft rollers and make the installation easier and simplified for this hard to reach location.
The handle of the tool makes access to the bolt hole in the small inspection opening easy. The pointed tool allows you to align the parts and easily insert the tool in the bolt hole. The next step is to push the tool back out of the hole with the bolt.
How do I know which Piper seat adjustment spring to purchase?
Aircraft make, model and serial number are not sufficient to ensure the correct replacement spring as many aircraft may have been originally equipped with either one or retrofitted with a conversion kit. If the spring you are replacing is marked with a brand name (e.g. P.L. Porter or Stabilus) the correct replacement is readily identified. The coil spring/hydraulic style are also identifiable by a 1¼" diameter visible coil spring. The thread may also be measured to verify the correct identification.
How do I determine the correct location for the different width flap rollers and the spacer/shim locations?
There are many different installations that were used for the different Cessna models. Please consult your applicable Service/Maintenance Manual and Illustrated Parts Catalog for the proper location for your specific aircraft.
What are some installation and fitment suggestions when installing a new coupling?
Ensure the alternator slips into place without binding. The mounting flange should seat flush- never force the alternator into position, as this can damage internal gear components.
Are McFarlane flap tracks compatible with OEM hardware?
Yes. These flap tracks are direct replacements and are compatible with OEM hardware and flap roller assemblies
How should I orientate the thrust washer when installing the coupling?
Install the thrust washer with the copper-colored side facing the alternator. Incorrect installation can lead to premature failure or improper seating. Ensure you have discarded any temporary shipping spacers or washers before installation. Leaving them in place can result in gear misalignment and internal engine damage.
When should Beech flap tracks be replaced?
Flap tracks should be replaced when wear or corrosion causes rough flap movement, binding, misalignment, or excessive roller wear, or when measured beyond safe limits using a wear gauge such as McFarlane’s P/N 900.
Do I need to remove the Cessna fuel strainer standpipe to clean the fuel screen?
Yes. The fuel screen is removed by removing the standpipe. The rubber tipped plunger must be unseated before the standpipe is loosened. Failure to lift the plunger off of its standpipe seat can damage the plunger. Pull the strainer drain knob as if you were draining the fuel bowl. Block or clamp the knob in this position. Insert a smooth round tool such as a screw driver or punch in the standpipe cross-hole and un-screw the standpipe.
Why is my new turbocharger leaking oil?
400 series turbochargers do not incorporate seals in the center housing where the oil is located. They do incorporate small piston rings on the shaft that, along with the gas pressures pushing in, help prevent the oil from coming out. Until there is a varnish built up on the shaft and housing, a new turbocharger will leak oil. This oil seepage may last up to 10 hours but typically is gone within a couple hours of run time. Once the turbo is installed and pre-lubed, run the engine at normal operation to help “seat” the piston rings and build up the protective coat of varnish.
Can I switch from a straight AeroShell mineral oil to a single grade ashless dispersant oil?
All AeroShell oils are compatible and can be mixed with each other. Many single grade customers try AeroShell Oil W 15W-50 during the colder part of the year, then convert to using it year round. Others, however, choose to alternate between single grade and multigrade depending on the time of year. Either system works well because AeroShell oils are entirely compatible and can be interchanged as desired.
In addition, if you need to replace a cylinder on a mid-time engine, you can switch from AeroShell Oil W single grade or AeroShell Oil W 15W-50 to a straight AeroShell mineral oil for one or two changes to break in the new cylinder. Then you can switch back to the ashless dispersant oil after the rings are properly seated.
If you have a mid-time engine that has been run exclusively on a straight mineral oil and wish to try an ashless dispersant oil, use caution. The introduction of an ashless dispersant oil into your engine could loosen up some of the carbon deposits. So check your oil screens and filters often to ensure against oil starvation and/or oil screen collapse.
