Piper SENECA II - 7-9 B. Inspection

PIPER SENECA II SERVICE MANUAL
04/30/07 VII - LANDING GEAR AND BRAKE SYSTEM
1J15
7-9b. INSPECTION.
a. General
1. Clean all parts with a suitable dry type cleaning solvent.
2. Inspect gear components for the following unfavorable conditions:
a
Bolts, bearings and bushings for excessive wear, corrosion and damage.
b
Gear strut and cylinder, drag links and down lock link assembly for cracks, dents, bends
or misalignment.
c
Down lock link assembly for damaged threads and bearing.
d
Roller assembly for freedom of movement and excessive wobble.
3. Check down lock spring and down lock link spring for excess wear and corrosion, particularly
around the hook portion. Springs should be discarded if wear or corrosion exceeds one-quarter
the diameter of the spring. Remove corrosion and paint spring.
4. Check down lock spring for adequate tension. This may be accomplished by observing several
locking activations and checking for smooth operation with positive locking each time. If hook
or down lock movement is slow or has a hesitation or jerky movement, the spring should be
replaced. Check down lock link assembly for proper operation and cleanliness. Pin and hole
should be carefully inspected for signs of wear or elongation.
5. Check general condition of limit switches and actuators, wiring for fraying and poor
connections or conditions which could lead to failures.
b. Service Wear Limits
Use the wear limits in Figure 7-2b to determine the condition of the listed parts when performing
the following inspections. Visually inspect all bolts/pins for wear, damage, or corrosion. Replace as
required.
c. 100 Hour Actuator Mount Bracket Inspection
Each 100 hours time-in-service, visually inspect the actuator mount bracket (Item 36, Figure 7-2,
Sketch D) for wear, cracks, loose mounting rivets, and elongation of the .250 diameter holes (Item
8, Figure 7-2b) where the retraction link and the P/N 95061-089 bushing (Item 47, Figure 7-2,
Sketch D) attach. See Figure 7-2b for wear limits.
d. 100 Hour Tunnel Bracket Installation Inspection (See Figure 7-2c.)
Inspect the rivets shown in Figure 7-2c for looseness. These rivets attach the Tunnel Bracket P/N
95554-000 and the Nose Gear Mount Fitting P/N 95555-000 to the tunnel aft of the bulkhead at F.
S. 49.5. (See Items 90 and 350, respectively, in Figure 7-2c.)
1. Place aircraft on jacks. Pull carpet away from the right side of the tunnel and secure out of the
way. Remove access panel in bottom of fuselage, just aft of F.S. 49.5 at B.L. 00.0.
2. Extend and retract landing gear through several cycles observing the rivets, tunnel bracket, and
mount fitting, from both inside and outside the airplane. Inspect for any relative motion
between the riveted components. No relative motion is permissible.
3. Inspect the bracket attachment flange for cracks in the flange radius as shown in Figure 7-2c.