Propeller Removal; Propeller Cleaning, Inspection And Repair; Propeller Installation - Piper PA-44-180 SEMINOLE Maintenance Manual

PROPELLER ASSEMBLY.
I MAINTENANCE OF PROPELLER.
REMOVAL OF PROPELLER.
1. Insure that the master and magneto switches are off.
2. Move fuel selector to off position.
3. Place the mixture control in idle cut-off.
4. Note position of each component to facilitate reinstallation.
5. Remove the screws from around the spinner assembly and remove spinner. (Refer to latest revision of
Hartzell Service Instructions No. 118.)
6. Remove the safety wire from the six propeller nuts on studs and remove studs.
7. Place a drip pan under the propeller to catch oil spillage, then remove the propeller.
CLEANING, INSPECTION AND REPAIR OF PROPELLER.
1. Check for oil and grease leaks.
2. Clean the spinner, propeller hub interior and exterior, and blades with a non-corrosive solvent.
3. Inspect the hub parts for cracks.
4. Steel hub parts should not be permitted to rust. Use aluminum paint to touch up, if necessary, or replate
during overhaul.
5. Check all visible parts for wear and safety.
6. Check blades to determine whether they turn freely on the hub pivot tube. This can be done by rocking the
blades back and forth through the slight freedom allowed by the pitch change mechanism. If they appear
tight and are properly lubricated, the pitch change mechanism should be removed so that each blade can be
checked individually. If blades are tight, the propeller should be disassembled.
7. Inspect blades for damage or cracks. Nicks in leading edges of blades should be filed out and all edges
rounded, as cracks sometimes start from such places. Use fine emery cloth for finishing. (Refer to Figure
61 -1 for propeller blade care.) Each blade face should be sanded lightly and painted, when necessary, with a
flat black paint to retard glare. A light application of oil or wax may be applied to the surfaces to prevent
corrosion.
8. It is recommended that for severe damage, internal repairs and replacement of parts, the propeller should be
referred to the Hartzell Factory or an authorized Service Station.
9. Grease blade hub through zerk fittings. Remove one of the two fittings for each propeller blade, alternate the
next time. Apply grease through the zerk fitting until fresh grease appears at the fitting hole of the removed
fitting. Care should be taken to avoid blowing out hub gaskets.
10. Check condition of the propeller mounting nuts on studs.
INSTALLING PROPELLER.
1. Insure master and magneto switches are off.
2. Place fuel selector to off position.
3. Place mixture control in idle cut-off.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3D3
6 1 - 11 - 0 1
Page 61-01
Revised: May 15, 1989