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3E24
CHAPTER
61
PROPELLER
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CHAPTER 61 -PROPELLER
TABLE OF CONTENTS / EFFECTIVITY
CHAPTER/ GRID SECTION SUBJECT NO. EFFECTIVITY
61-10-00 PROPELLER ASSEMBLY 3F5
Maintenance 3F5 Removal 3F5 Cleaning, Inspection and Repair 3F5 1R0202 Installing 3F5 Blade Track 3F8
61-20-00 CONTROLLING 3F9
Propeller Governor 3F9 Removal 3F9 Installation 3F9 Rigging and Adjustment 3F10
Propeller Unfeathering System 3F12 Accumulator Service 3F12
61-Cont./Effec. Page 61-3 Revised: February 28, 2002
— WARNING —
THE USER IS RESPONSIBLE FOR REFERRING TO THE APPLICABLE VENDOR PUBLICATION(S) WHEN SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER AIRCRAFT. (SEE INTRODUCTION, PAGE 5.)
61-Cont./Effec. Page 61-4 Issued: April 1, 1997
3F4
PROPELLER ASSEMBLY.
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.
61-10-00 Page 61-5 Issued: April 1, 1997
4.
Observe the starter ring gear to make sure it is mounted properly on the engine crankshaft flange. One of the bushings on the crankshaft is stamped with an “O” mark and it must be inserted in the starter ring gear hole. Iikewise identified with an “O” mark.
5.
Wipe crankshaft and propeller pilot to assure that no chips or foreign matter enter the propeller mechanism.
6.
Check interior of propeller hub for proper seating of O-ring. Wipe inside of hub to remove any traces of dirt. Check to see that O-ring is covered with grease.
7.
Raise propeller into position so that each stud mates with an engine flange bushing and screw each stud in a few threads at a time until all are tight. Torque to 60 to 70 foot pounds.
8.
Check the propeller blade track.
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