Piper PA-28 Main Gear Fairing Installation and Maintenance Manual

will be covered by P/N LGF when it is installed! It is recommended when drilling the fiberglass to start with a smaller drill size and gradually move up to the final size. Use a drill stop to prevent drilling too deep and damaging tire! With holes drilled install (12) BACN10FX83 clip-on Nut Plates on Wheel Pant. Drill P/N LGF in dimpled points to accept an A3135SS-017 washer. 2.7 Final Installation of P/N LGF. Place P/N LGF in place and check all hole locations. The perimeter of P/N LGF may be sanded to attain optimum fit to Wheel Pant. Install P/N LGF using (12) AN507C-832R-8 Screws, and (12) A3135SS-017 Washers. Run gear through it’s full up and down travel to confirm there is no binding. Also confirm that screws are of a proper length so as not to rub on tire. 2.8 Installing P/N LUSF, Left Upper Strut Fairing. (REFERENCE DETAIL #1) Place P/N LUSF Left Upper Strut Fairing around P/N LSF and fasten trailing edge together using (1) AN507C-832R-8 Screw and (1) A3135SS-017 Washer. Hold P/N LUSF firmly against bottom wing skin and adjust so it is positioned properly around P/N LSF. Tape P/N LUSF in place and drill (6) #40 holes through fairing and into lower wing skin at the dimpled locations. Confirm that that the two most forward holes miss the main wing spar that runs directly behind the forward screw locations! If the dimpled locations fall on an existing rivet they may be moved up to .625” while observing minimum edge distance. (Use of a drill stop is recommended to prevent drilling deeper than necessary) Cleco P/N LUSF in place and check for proper fit. Remove Clecos and tape to allow LUSF to slide away from wing. Enlarge the (6) # 40 holes just drilled in airframe to a #2 Hole size. Install (6) P/N A8K-75 Rivnuts in holes. Drill (6) holes in LUSF to a #15 holes size and countersink to accept A3135SS-017 Washers. Fasten P/N LUSF to aircraft using (6) AN507C-832R-8 Screws, and (6) A3135SS-017 Washers. 2.9 Installing Fairings on Right Gear. Repeat steps 2.1 through step 2.8 on right side. Note that P/N’s for right side fairings start with an “R” instead of an “L”. 2.10 Servicing Struts and Lowering Aircraft. Service struts per the Piper Service Manual and reinstall air valves. Lower aircraft and remove jacks. A final inspection should be made to confirm no binding of parts is evident. Piper PA-28 Main Gear Fairing Installation and Maintenance Manual Issue Date: 4-14-98 STC No. SA1012GL Rev. B Manual No. 28GF-M Rev Date: 8-24-2011 Knots 2U, Ltd. 709 Airport Road Burlington, WI 53105 Ph 262.763.5100 Fax 262.763 5125 www.knots2u.com Page 6 of 8 Section 3.0 Removal If removal of a fairing is required it may be accomplished by reversing the installation procedures shown in section 2.1 thru 2.9 of this manual. Section 4.0 Parts List Part No. No. Required Description LSF 1 Left Strut Fairing RSF 1 Right Strut Fairing LGF 1 Left Gear Fairing RGF 1 Right Gear Fairing LUSF 1 Left Upper Strut Fairing RUSF 1 Right Upper Strut Fairing SFS 2 Strut Fairing Spacer BACN10FX83 24 ½” Depth #832 Clip-On Nut Plate AN507C832R-8 60 C/S Stainless Steel Screw A3135SS-017 60 C/S Stainless Steel Washer A8K-75 12 Keyed Rivnut AN970-4 6 Large Area Washer Section 5.0 Paperwork Perform paperwork (337 and log book entries). Place Supplemental Type Certificate and KNOTS 2U, LTD. Maintenance Manual with log books. Main Gear Fairing kit and hardware weight = 5.9 lbs. Minus weight of Piper strut fairings removed. Arm = 109.64 inches. Piper PA-28 Main Gear Fairing Installation and Maintenance Manual Issue Date: 4-14-98 STC No. SA1012GL Rev. B Manual No. 28GF-M Rev Date: 8-24-2011 Knots 2U, Ltd. 709 Airport Road Burlington, WI 53105 Ph 262.763.5100 Fax 262.763 5125 www.knots2u.com Page 7 of 8 ATTACH AT FOUR POINTS TO EXISTING ANGLE TABS ON BOTTOM OF WING. P/N RUSF SHOWN P/N LUSF OPPOSITE AN507C-832R-8 SCREW A3135SS-017 WASHER A8K-75 RIVNUT (6 PER SIDE REQ.) P/N SFS STRUT FAIRING SPACER P/N AN507C-832R-8 SCREW A3135SS-017 WASHER (2 PER SIDE REQ.) AN507C-832R-8 SCREW A3135SS-017 WASHER BACN10FX83 CLIPNUT 12 PER SIDE REQ (SEE FIG. A FOR DRILLING) FIGURE A. CLIPNUT DRILLING DETAIL BACN10FX83 CLIP NUT .19” HOLE .50” .50” HOLE E DRILL EXISTING GEAR FAIRING HOLES TO ABOVE DIMENSIONS FOR INSTALLATION OF CLIP NUTS. AN507C-832R-8 SCREW A3135SS-017 WASHER (9 PER SIDE REQ.) Section 6.0 Installation Diagram Detail 1 DETAIL #1 EXISTING WHEEL PANT EXISTING WHEEL PANT P/N RGF SHOWN P/N LGF OPPOSITE TRIM OPENING TO FIT Piper PA-28 Main Gear Fairing Installation and Maintenance Manual Issue Date: 4-14-98 STC No. SA1012GL Rev. B Manual No. 28GF-M Rev Date: 8-24-2011 Knots 2U, Ltd. 709 Airport Road Burlington, WI 53105 Ph 262.763.5100 Fax 262.763 5125 www.knots2u.com Page 8 of 8 Section 7.0 Maintenance / Instructions for Continued Airworthiness The Airworthiness Limitations section is FAA approved and specifies maintenance required under Secs. 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved. For the current copy of this manual please contact Knots 2U, Ltd. at 262 763-5100 or via email at technical@knots2u.com. PART A. INSPECTION 1. During preflight, annual, or 100 hour inspections, inspect Gear Fairing, attachment hardware, and brake line for excessive wear or looseness. Inspect condition of all fairings and hardware. PART B. MAINTENANCE 1. There are no special tools required to maintain the Gear Fairings. Any tools needed are basic hand tools. 2. If the Gear Fairing attachment hardware is found to be excessively worn or loose during the inspection, it should be replaced. PART C. CRACKING OR DEFECTS 1. If a crack is found on a Gear Fairing, stop drill the crack and fill it with silicon and smooth the surface. 2. If any crack exceeds 1 inch in length; or, if a crack runs from an attachment hole to the outer edge of the Gear Fairing, remove the part and repair the crack according to FAR 43.13-1A Acceptable Methods, Techniques and Practices - Aircraft Inspection and Repair, Chapter 2.