Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 448 / 881

E. Check alignment of the downlock hook to determine if it grips the roller bearing so as not to contact
the bolt head, the bearing attachment block or washer. If the downlock hook is inboard, or it contacts
the bolt head, shim between the bearing and the bearing attachment block with washer AN960-10L,
not to exceed three. The bearing must be free to rotate.
F. Install the gear tension spring arm on the drag link bolt on the right side of the gear oleo housing,
secure and safety. An AN960-516L washer is installed on the bolt between the lower drag link and the
arm.
4. Retract and extend the landing gear several times to ascertain smoothness of operation. Also check that the
drag link assembly falls into the through center locked position. (See CAUTION.)
5. Retract the gear and connect the gear downlock spring between the downlock hook and the upper drag link.
6. Extend the gear and connect the two gear tension springs between the attachment point on the oleo housing
and the spring arm.
7. Attach the aft end of the hydraulic cylinder to its attachment fitting using bolt, nut and washer.
8. Reconnect both nose gear door actuating rods.
9. Ascertain that the landing gear is serviced per Chapter 12.
10. Check adjustment of the gear.
11. Retract landing gear and check door operation.
12. Check the alignment of the nose gear.
13. Ascertain that the landing gear is down and locked, then remove the airplane from jacks.
NOSE GEAR DOWNLOCK AND ECCENTRIC BUSHING.
REMOVAL OF NOSE GEAR DOWNLOCK AND ECCENTRIC BUSHING. (Refer to Figure 32
1. Place the aircraft on jacks as described in Chapter 7.
2. Position a temporary support under the nose compartment and remove the four bolts which secure the nose
to the fuselage. Remove the temporary support and gently lower the nose.
3. Remove the nose wheel well close out cover.
4. Loosen the ban clamps around the cabin heater to allow access to the lower area.
5. Remove the hydraulic retract cylinder aft mounting bolt.
6. Remove the nose gear downlock spring.
7. Remove the cotter pins, nuts and washers from the drag brace/ wheel well attach points and push the bolts
back into the wheel well far enough to allow the drag brace to be lowered.
8. Remove the bolt which secures the hydraulic retract cylinder forward rod end to the nose gear downlock.
— Note —
Exercise caution to prevent the loss of the bushing located on the inboard (nut) side of
the downlock hook.
9. Remove the downlock hook to drag brace mounting pivot bolt and remove the downlock hook.
10. Reach under the cabin heater unit and remove the nut from the downlock eccentric bushing mounting bolt
and remove the bolt and bushing.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3 2 - 2 2 - 0 5
Page 32-31
Revised: May 15, 1989
2G23
PIPER AIRCRAFT