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The brake assemblies and linings should be checked at every oil
change (50 hours) for general condition, evidence of overheating, and
deterioration. In addition, at every annual/100-hour inspection the
brakes should be disassembled, the brake linings should be checked
and the O-rings replaced.
June 2007
Information Manual 8-17
Cirrus Design Section 8
SR22 Handling, Servicing, Maintenance
The aircraft should not be operated with overheated, damaged, or
leaking brakes. Conditions include, but are not limited to:
• Leaking brake fluid at the caliper. This can be observed by
checking for evidence of fluid on the ground or deposited on the
underside of the wheel fairing. Wipe the underside of the fairing
with a clean, white cloth and inspect for red colored fluid
residue.
• Overheated components, indicated by discoloration or warping
of the disk rotor. Excessive heat can cause the caliper
components to discolor or cause yellowing of the part
identification label.
To inspect the brake assemblies:
1. Remove main landing gear fairings.
2. Check brake linings for deterioration and maximum permissible
wear. Replace lining when worn to 0.100 inch (2.54 mm).
• Caution •
Serials 0002 through 1727 after Service Bulletin SB 2X-32-14
and airplane serials 1728 and subsequent: Clean and inspect
temperature indicator installed to piston housing. If indicator
center is black, the brake assembly has been overheated. The
brake linings must be inspected and the O-rings replaced.
3. Check brake assemblies for evidence of overheating and/or
deterioration.
4. Install main landing gear fairings.
Tire Inflation
For maximum service from the tires, keep them inflated to the proper
pressure. Nose tire unloaded tire pressure is 40 +2/-0 psi (275 +15/-0
kPa) and the unloaded main gear tire pressure is 62 +2/-0 psi (427
+15/-0 kPa). When checking tire pressure, examine the tires for wear,
cuts, nicks, bruises and excessive wear.
To inflate tires:
1. Remove inspection buttons on wheel pants to gain access to valve
stems. It may be necessary to move airplane to get valve stem
aligned with the access hole.
June 2007
8-18 Information Manual
Section 8 Cirrus Design
Handling, Servicing, Maintenance SR22
2. Remove valve stem cap and verify tire pressure with a dial-type
tire pressure gage.
3. Inflate nose tire to 40 +2/-0 psi (276 +15/-0 kPa) and main wheel
tires to 62 +2/-0 psi (427 +15/-0 kPa).
4. Replace valve stem cap and inspection buttons.
All wheels and tires are balanced before original installation and the
relationship of tire, tube, and wheel should be maintained upon
reinstallation. In the installation of new components, it may be
necessary to rebalance the wheels with the tires mounted.
Unbalanced wheels can cause extreme vibration in the landing gear.
Propeller Servicing
The spinner and backing plate should be cleaned and inspected for
cracks frequently. Before each flight the propeller should be inspected
for nicks, scratches, and corrosion. If found, they should be repaired as
soon as possible by a rated mechanic, since a nick or scratch causes
an area of increased stress which can lead to serious cracks or the
loss of a propeller tip. The back face of the blades should be painted
when necessary with flat black paint to retard glare. To prevent
corrosion, the surface should be cleaned and waxed periodically.
Oil Servicing
The oil capacity of the Teledyne Continental IO-550-N engine is 8
quarts. It is recommended that the oil be changed every 50 hours and
sooner under unfavorable operating conditions. The following grades
are recommended for the specified temperatures at sea level (SL):
Ambient Air Temperature (SL) Single Viscosity Multi-Viscosity
All Temperatures -—
20W-60
20W-50
15W-50
Below 40° F SAE 30
10W-30
20W-60
20W-50
15W-50
Above 40° F SAE 50
20W-60
20W-50
15W-50
June 2007
Information Manual 8-19
Cirrus Design Section 8
SR22 Handling, Servicing, Maintenance
An oil filler cap and dipstick are located at the left rear of the engine
and are accessible through an access door on the top left side of the
engine cowling. The engine should not be operated with less than six
quarts of oil. Seven quarts (dipstick indication) is recommended for
extended flights.
To check and add oil:
1. Open access door on upper left-hand side of cowl. Pull dipstick
and verify oil level.
2. If oil level is below 6 quarts (5.7 liters), remove filler cap and add
oil through filler as required to reach 7-8 quarts (6.6-7.6 liters).
　
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