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rating tires and tubes. The nose wheel assembly uses a 5.00 x 5 fourply
rating, type III tire and tube. Always keep tires inflated to the rated
pressure to obtain optimum performance and maximum service. The
landing gear struts do not require servicing. With the exception of
replenishing brake fluid, wheel and brake servicing must be
accomplished in accordance with AMM procedures.
Brake Servicing
Brake Replenishing
The brake system is filled with MIL-H-5606 hydraulic brake fluid. The
fluid level should be checked at every oil change and at the annual/
100-hour inspection, replenishing the system when necessary. The
brake reservoir is located on the right side of the battery support
frame. If the entire system must be refilled, refer to the AMM.
To replenish brake fluid:
1. Chock tires and release parking brake.
2. Remove top engine cowling to gain access to hydraulic fluid
reservoir.
3. Clean reservoir cap and area around cap before opening reservoir
cap.
4. Remove cap and add MIL-H-5606 hydraulic fluid as necessary to
fill reservoir.
5. Install cap, inspect area for leaks, and then install and secure
engine cowling.
Brake Inspection
The brake assemblies and linings should be checked at every oil
change (50 hours) for general condition, evidence of overheating, and
deterioration. Serials 0002 thru 3450 before SB 2X-05-01: At every
annual/100-hour inspection the brakes should be disassembled, the
brake linings should be checked and the O-rings replaced.
March 2010
Cirrus Design Section 8
SR22 Handling, Servicing, and Maintenance
Information Manual 8-17
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 gear fairing. (Refer to AMM 32-10)
2. Wipe off any debris from brake caliper assembly that may obstruct
inspection.
3. Check brake linings for deterioration and maximum permissible
wear. Replace lining when worn to 0.100 inch (2.54 mm).
4. Inspect temperature indicator(s):
Serials 0002 thru 3450 before SB 2X-05-01:
a. 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.
Serials 0002 thru 3450 after SB 2X-05-01:
a. Clean and inspect temperature indicators installed to brake
caliper assembly.
b. Verify temperature indicators are firmly adhered to piston
housing.
c. If top temperature indicator is white or lower temperature
indicator is white, the brake assembly has not overheated. Oring
replacement is not necessary. If either temperature
indicator is black, the brake assembly has overheated. The
brake linings must be inspected and the O-rings replaced.
5. Check brake assemblies for evidence of overheating and/or
deterioration.
6. Install main gear fairing. (Refer to AMM 32-10)
March 2010
8-18 Information Manual
Section 8 Cirrus Design
Handling, Servicing, and Maintenance SR22
Tire Inflation
For maximum service from the tires, keep them inflated to the proper
pressure. 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.
2. Remove valve stem cap and verify tire pressure with a dial-type
tire pressure gage.
3. Inflate nose tire to 30 psi (207 kPa) and main wheel tires to 62 psi
(427kPa).
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
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西锐20飞机信息手册 SR22 AIRPLANE INFORMATION MANUAL 2979(88)
