Maintenance Practices - Cirrus SR22 Airplane Maintenance Manual

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

2. MAINTENANCE PRACTICES

A. Ignition Switch - Serials 0002 thru 0434, 0435 thru 0820 w/o PFD
(1) Removal - Ignition Switch
(a) Turn ignition switch to the OFF position.
(b) Remove engine cowling.
(c) Disconnect battery.
(d) Remove LH kick plate.
(e) Remove retaining nut securing ignition switch to bolster panel, remove placard plate, and
remove switch from panel.
WARNING:
CAUTION:
(f) Loosen screws from terminals on back of ignition switch and remove wire leads.
(2) Installation - Ignition Switch
(a) Connect wire leads to ignition switch.
(b) Perform Functional Check - Ignition Switch.
(c) Position ignition switch in bolster panel, position placard on ignition switch, and install
retaining nut.
(d) Install LH kick plate.
(e) Connect battery.
(f) Install engine cowling.
(3) Functional Check - Ignition Switch
(a) Acquire necessary tools, equipment, and supplies.
Ohmmeter
(b) Remove engine cowling.
(c) Disconnect battery.
(d) Check right P-lead continuity:
1
2
3
4
5
(e) Check left P-lead continuity:
1
2
3
4
5
(f) Connect battery.
(g) Install engine cowling.
74-30
Page 2
15 Apr 2007
(Refer to 71-10)
(Refer to 24-30)
(Refer to 25-10)
Prior to disconnecting ignition switch, ground P-leads at magnetos to
prevent accidental firing of engine.
When removing wire leads from ignition switch, note EXACT location of
attaching leads for reference on reinstallation.
(Refer to 25-10)
(Refer to 24-30)
(Refer to 71-10)
Description P/N or Spec.
-
(Refer to 71-10)
(Refer to 24-30)
Remove P-lead from right magneto.
Attach P-lead to ohmmeter and to airframe ground.
With switch in OFF or L position, verify ohmmeter indicates closed circuit.
With ignition switch in R or BOTH position, verify ohmmeter indicates open circuit.
Connect P-lead to right magneto.
Remove P-lead from left magneto.
Attach P-lead to ohmmeter and to airframe ground.
With switch in OFF or R position, verify ohmmeter indicates closed circuit.
With ignition switch in L or BOTH position, verify ohmmeter indicates open circuit.
Connect P-lead to left magneto.
(Refer to 24-30)
(Refer to 71-10)
(See Figure 74-301)
(Refer to 74-30)
Supplier
Any Source
EFFECTIVITY:
Serials 0002 thru 0434, 0435 thru 0820 w/o PFD
M O D E L S R 2 2
Purpose
Test continuity.