C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

EFFECTIVITY:

PROPELLER

1. GENERAL

The airplane employs a 3 blade, constant speed, non-feathering propeller. The blades (composite or alumi-num) are mounted in an aluminum hub which contains the pitch changing mechanism consisting of a pis-ton/cylinder, piston rod, and blade actuating components.

For propeller speed adjustment, a propeller control cable is terminated on a cam plate which is mounted to the throttle control lever. This connection mechanically adjusts the propeller speed by increasing oil pres-sure from an engine mounted governor to move the blades into high pitch or reduced RPM. A spring and centrifugal twisting moment of the blades moves them to low pitch in the absence of governor oil pressure. Under this arrangement, the propeller is set to 2700 RPM for full forward throttle takeoff and climb, 2500 RPM for mid to full throttle cruise, and approximately 1900 RPM at lower power.

61-00All

Page 115 Apr 2007

61-00 Serials 0002 & subs w/ Hartzell Propeller

C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

Page 215 Apr 2007

EFFECTIVITY:

Figure 61-001Propeller Schematic - Serials 0002 & subs w/ Hartzell Propeller (Sheet 1 of 2)

SR22_MM61_2021

1

2

3

1716

1514

13

12

1110

98

7

6

5

4

LEGEND 1. Shaft O-Ring 2. Mounting Stud 3. Engine Flange 4. Spinner Bulkhead 5. Blade 6. Blade Retention Bearing 7. Hub 8. Pitch Return Spring 9. Piston10. Oil11. Cylinder12. Low Pitch Stop13. Spinner Dome14. Pitch Change Rod15. Fork16. Grease Fitting17. Balance Wire

C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

EFFECTIVITY:

Figure 61-001Propeller Schematic - Serials 0687 & subs w/ optional McCauley Propeller (Sheet 2 of 2)

SR22_MM61_1760

LEGEND 2. Mounting Stud 4. Spinner Bulkhead 5. Blade 6. Blade Retention Bearing 7. Hub 8. Pitch Return Spring 9. Piston11. Cylinder12. Low Pitch Stop13. Spinner Dome18. Blade O-Ring19. Blade Shim Pack and Retaining Ring20. Split Retainer21. High Pitch Stop22. Blade Actuating Pin23. Balance Weights

22

8

6

13

1920

7

11

23

21

129

18

5

2

4

61-00Serials 0687 & subs w/ optional McCauley Propeller

Page 315 Apr 2007

61-00 All

C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

Page 415 Apr 2007

EFFECTIVITY:

Figure 61-002Propeller Control

SR22_MM61_1480A

MIXTURE LEVER

POWER LEVER

ALT AIR INDUCTION

THROTTLE

MIXTURE

GOVERNOR

FIREWALLHUB

SPINNER

C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

EFFECTIVITY:

2. TROUBLESHOOTING

Trouble Probable Cause Remedy

Surging propeller. Governor out of adjustment. Inspect and adjust governor.

Air in propeller governor oil body. Cycle propeller through pitch range several times.

Engine speed varies with attitude or airspeed.

Governor not properly controlling propeller blade angle.

Inspect and adjust governor.

Friction in propeller. Inspect propeller and make nec-essary adjustments.

Decrease in engine speed while increasing airspeed.

Governor is excessively increas-ing oil volume.

Inspect and adjust governor.

Decrease in engine speed while decreasing airspeed.

Governor is not reducing oil vol-ume.

Inspect and adjust governor.

Increase in engine speed while decreasing airspeed.

Governor is excessively decreas-ing oil volume.

Inspect and adjust governor.

Increase in engine speed while increasing airspeed.

Governor is not increasing oil vol-ume.

Inspect and adjust governor.

Propeller piston seal leaking oil to opposite side of piston.

Remove propeller from aircraft, disassembly, clean, and replace propeller seals. (Refer to 61-10)

Propeller goes to uncommanded low pitch.

Loss of propeller oil pressure. Inspect governor pressure relief valve, governor drive, engine oil supply, engine transfer bearing for leakage.

Oil leakage at engine flange/hub interface.

Damaged O-ring seal between engine and propeller.

Replace O-ring. (Refer to 61-10)

Mounting nuts not tight. Clean mating surface and tighten nuts properly. (Refer to 61-10)

Oil leakage at other locations. Defective seals or incorrect assembly.

Repair or replace seals as required.

Tachometer does not indicate 2700 RPM with power lever in full forward position.

Governor out of adjustment. Perform Adjustment/Test - Gover-nor Rigging and Low-Pitch Stop Adjustment. (Refer to 61-20)

Tachometer does not indicate 2500 RPM with power lever in engine cruise position.

Governor control cable Perform Functional Test - Engine Cruise RPM. (Refer to 61-20)

61-00All

Page 515 Apr 2007

61-00 All

C I R R U S A I R P L A N E M A I N T E N A N C E M A N U A L M O D E L S R 2 2

Page 615 Apr 2007

EFFECTIVITY:

Intentionally Left Blank