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03 Nov 2009 TM
PO BOX 90, Mobile, AL 36601 251-438-3411 MSB09-8
©2009, TELEDYNE CONTINENTAL MOTORS, INC.
c. Check rocker arm side clearance between the retainers and rocker arms with a
feeler gauge; side clearance must be 0.002 - 0.015 inches. If side clearance
exceeds the allowable amount, replace the thrust washers with a thicker (oversize)
thrust washer to reduce side clearance to the correct tolerance.
d. Measure the dry valve lash at valve tip-to-rocker foot by applying pressure on the
rocker arm at the ball (pushrod) end. Insert a feeler gauge between the rocker arm
foot and valve tip; allowable limits are 0.060 (min) to 0.200 (max). Replace the
pushrods with authorized over size pushrods (P030) if the dry valve lash exceeds
the maximum limit.
e. If all measurements are correct, verify rocker arm fastener torque and secure the
rocker arm screws (nuts on 240/360 engines) by bending the new tab washer tabs
against the flat side of the screw heads (nuts on 240/360 engines).
Figure 10. Crossflow Cylinder Rocker Arm Side Clearance
16. Install the rocker cover with new rocker cover gasket; secure with screws, new lock
washers and flat washers.
ISSUE DATE REVISION DATE PAGE NO REVISION
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03 Nov 2009 TM
PO BOX 90, Mobile, AL 36601 251-438-3411 MSB09-8
©2009, TELEDYNE CONTINENTAL MOTORS, INC.
MSB09-8 Lifter Return Form
MSB09-8 LIFTER RETURN FORM
NOTE: Completion of this form and return of affected lifters to TCM is
required for processing of any warranty claim. DATE:
Drain the oil from the lifters and pack each lifter individually in a zip lock bag, identifying the cylinder
position and engine serial number from which the lifter was removed on the outside of the bag. Pack the
individually bagged lifters in a larger zip lock bag identified with the engine serial number on the outside
bag:
Teledyne Continental Motors
Analytical Department Attn: Lifter Return
2039 Broad Street
Mobile, AL 36615
OWNER/OPERATOR INFORMATION
COMPANY NAME:
CONTACT NAME:
E-MAIL: PHONE:
ADDRESS 1:
ADDRESS 2:
CITY: STATE:
PROVINCE:
POSTAL
CODE:
COUNTRY:
AIRCRAFT
MAKE/MODEL: REGISTRATION NO.
ENGINE
MODEL: SERIAL NO.
ENGINE BUILD DATE: DATE PLACED IN SERVICE: ENGINE HOURS SINCE NEW,
REBUILD, OR OVERHAUL:
ENGINE
POSITION: SINGLE LEFT RIGHT FRONT REAR
Inspection Complied with only – No hydraulic lifters replaced or required for this engine
C I R R U S SR2X
Service Bulletin
SB 2X-27-16
Cirrus Design SR20 Serials 1005 thru 2029. Page 1
Cirrus Design SR22 Serials 0002 thru 3459.
EFFECTIVITY:
Number: SB 2X-27-16
1. COMPLIANCE
Recommended: Accomplish this Service Bulletin at the next scheduled maintenance, annual inspection,
or within the next 12 calendar months, whichever occurs first. Compliance time begins upon receipt of this
Service Bulletin.
2. EFFECTIVITY
Cirrus Design SR20 Serials 1005 thru 2029.
Cirrus Design SR22 Serials 0002 thru 3459.
3. APPROVAL
FAA approval has been obtained on all technical data in this Service Bulletin that affects type design.
4. PURPOSE
Recently, Cirrus discovered a sequential dependent condition where if the 0% flap actuator sensor fails
and the actuator extends past the 0% point, the actuator rod end could bend. In the event of deploying the
flaps to 100% with a bent rod end, the flaps could over-deploy and allow the flap actuator linkages to overcenter.
If the rod end were to fail while in this position an asymmetric flap condition could result.
To prevent this condition from occurring, this Service Bulletin installs a collar to the flap actuator to prevent
the actuator from over-extending and replaces the actuator end fitting and rod end with versions of a new
design. These combined changes reduce actuator travel in the event of a sensor failure.
5. DESCRIPTION
This Service Bulletin contains instructions for the modification of the placement of the flap actuator sensors,
replacement of the actuator end fitting and rod end, and the addition of a hard stop on the actuator
shaft.
6. WARRANTY INFORMATION
Part and labor cost for this Service Bulletin are at the owner’s expense.
7. MANPOWER REQUIREMENTS
1.0 man-hour.
8. OTHER PUBLICATIONS AFFECTED
SR20 Airplane Maintenance Manual (p/n 12137-001)
SR20 Illustrated Parts Catalog (p/n 12138-001)
SR22 Airplane Maintenance Manual (p/n 13773-001)
SR22 Illustrated Parts Catalog (p/n 13774-001)
9. WEIGHT AND BALANCE
N/A
SNS SUBJECT: 27-50 Flaps - Flap Actuator Modification
Issued: October 02, 2009
　
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