Removal Of Main Gear Actuating Cylinder; Disassembly Of Actuating Cylinder - Piper SENECA II Service Manual

PIPER SENECA Il SERVICE MANUAL
1. ENO GLAND
2 3 4 5
2. BACK-UP RING
3. 0-RING
4. RETAINER RING
5. 0-RING
6. PISTON
7. BODY, CYLINDER
8. 0-RING
9. CLEVIS ENO
10. CLEVIS BEARING
Figure 6-7. Gear Actuating Cylinder
c. Disconnect operating rod end from the bracket on the trunnion assembly by removing attaching
bolt and nut.
d. Disconnect cylinder from the link assembly. The downlock spring and downlock link are also
attached to this link assembly. After removing the cylinder, it is suggested the spring and link be
temporarily reinstalled until the cylinder is ready for reinstallation.
e. Remove the cylinder from the wheel well.
6-1 7. REMOVAL OF MAIN GEAR ACTUATING CYLINDER.
a. Place airplane on jacks. (Refer to Jacking, Section II.)
b. Disconnect hydraulic lines from actuating cylinder and cover open line ends to prevent
contamination.
c. Disconnect gear downlock spring from swivel fitting at upper end of spring.
d. Remove downlock spring swivel fitting and disconnect cylinder operating rod end from upper
side brace retraction fitting by removing attaching nut, washer and bolt.
e. Disconnect cylinder from its attachment by removing nut and bolt.
f. Remove cylinder from wheel well.
6-18. DISASSEMBLY OF ACTUATING CYLINDER. (Refer to Figure 6-7.)
NOTE
The following disassembly, cleaning, inspection, repair and
assembly instructions apply to nose gear actuator and both main
gear actuators.
a. Using hand pressure, push piston rod (6) toward clevis end (9) to remove oil from the cylinder.
b. Place clevis in a soft jaw vise and clamp against the clevis bearing (10).
c. Install any 1/8-27 pipe fitting into the port on the end gland. This fitting is used for leverage only
and need not be tight. (Refer to Figure 6-8.)
Reissued: 10/11/79
HYDRAULIC SYSTEM
1116