Removed all wheel pants. Need to replace the right wheel. Left wheel and nose wheel were tires and tubes were replaced last year.
Lubricated aileron hinges, aileron external pushrod rod end bearing, flap lower (external) linkages. Lubricated prop, mixture, throttle, cabin heat, and alternate air push/pull controls both inside the cabin and outside in the engine compartment.
Removed spinner. Greased prop with 6 pumps of grease each side. Inspected bolts and safety wire. Reinstalled spinner.
Removed all baggage items from aircraft. Vacuumed carpet, removed interior carpet. Determined both magnetos had been previously IRAN’ed at 398.7 (left) and 525 (right) Tach times respectively. Current tach 735.4.
Removed 8 spark plugs.
Inspected and took pictures internal to each cylinder of intake and exhaust valves. Replaced all spark plugs with new.
Did some maintenance today. Had a sneaking suspicion about the left brake rubbing. Opened left wheel pant since it was just a tiny bit wobbly. Found brake caliper and wheel pant mounting bracket all 3 bolts loose allowing up down motion of whole brake assembly. Removed wheel and tightened bolts. Reinstalled. Noticed this very tiny motion two months ago and we should have checked sooner. Lesson learned: if anything changes even a little bit investigate. Left tire at 22 psi. Right tire at 15 psi!! Filled to 35 each. Since the pressure was low the bulging wheel managed to rub and take another small chunk of the fiberglass wheel pant off on both sides. Trimmed and cleaned a bit more using the sanding wheel in a die grinder on both left and right main wheel pants. Reinstalled both wheel pants. Will test fly it tomorrow AM during instrument lesson. Should probably check nose tire pressure but I didn’t have time before leaving today.
Decided to remove and regap all 8 sparkplugs which made a big difference in ease of starting. Most had gaps bigger than 0.022. Reset to 0.016.
While working around the plane the led work light stand tipped into the wing and put a dent on the top side of the leading edge of the right wing outboard of the fuel tank. It’s smaller than a dime and doesn’t affect airworthiness but I’m feeling pretty bad about it. I plan to research options for removing the dent via auto body service like dent masters or filling the dent with bondo and recovering with a small vinyl patch.