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How to inspect and replace piper forward cowling bushing

How to inspect and replace piper forward cowling bushing






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    How to inspect and replace piper forward cowling bushing How to inspect and replace piper forward cowling bushing Presentation Transcript

    • HOW TO INSPECT AND REPLACE PIPER FORWARD COWLING BUSHINGS STEP 1 • When performing any inspection or maintenance on the powerplant, propeller or that requires turning on the master switch, or pulling the propeller through by hand; treat the propeller as if the ignition switch were on. DO NOT stand, nor allow anyone else to stand, within the arc of the propeller as a loose or broken wire or component malfunction could cause the propeller to rotate.
    • STEP 2 • Remove upper cowling and inspect forward lock pins, latch plates and bushings for damage, wear or missing parts. • NOTE: This cowling was missing both bushings! The elongated holes show they have been missing for a while.
    • STEP 3 • If the latch plates are not worn but the bushings are loose or worn, the lower cowling does not need to be removed. • Remove the old bushing by removing the snap ring and push the bushing through the latch plate. • See “Piper Airframe Parts” to purchase the new bushing and snap ring. • Install the new bushing and snap ring and reinstall the top cowling.
    • STEP 4 • If latch plates are found to be worn, the lower cowling will need to be removed. • See “Piper Airframe Parts” for the new cowl latch plate. • NOTE: When removing lower cowling from “R” model aircraft, (PA-28R-) note the direction and location of all fasteners when removing them. This makes the installation much easier. Also, be sure to disconnect any landing light wires and gear door linkages etc.
    • STEP 5 • When lower cowling is removed, remove the lock nuts attaching the latch plate to the cowling. Install the new latch plate and lock nuts, DO NOT tighten the lock nuts yet. • Install new bushings in latch plates per Step #3. • While both cowlings are off, take the top and lower cowlings and assemble them together, locking all side fasteners and assure that the forward pins are locked into the new bushings. • Now tighten the lock nuts on the latch plates.
    • STEP 6 • Reinstall the lower cowling making sure all landing light wiring, gear door linkages and oil cooler hoses are reattached. Leave the Gear Door Bracket screws loose for now. • Reinstall top cowling, ensuring that the forward lock pins are fully engaged into the bushings.
    • STEP 7 • Latch the side fasteners and tighten all screws. This reduces any stress on the cowling when reinstalling.
    • PIPER FORWARD COWLING BUSHINGS INSTALLATION COMPLETE • Make appropriate logbook entry of the work performed. The FAA has a sample logbook entry shown in the free video on our home page at www.apex-inc.biz. • This presentation contains information that is consistent with FAR 65.83 “Recent Experience Requirements.” • Please visit www.apex-inc.biz to view a free video that reviews Basic Maintenance for Pilots and Technicians as part of FAR 43 and 91. Click on “Watch the video” located about half way down on the left side of the page.