Piper PA-44-180 SEMINOLE Maintenance Manual page 450

INSTALLATION OF NOSE GEAR DOWNLOCK AND ECCENTRIC BUSHING. (Refer to Figure 32-8.)
1. Install the new eccentric bushing. (Refer to Figure 32-8 for proper assembly.) Since the eccentric bushing
will require adjustment do not tighten the bolt in its final torque.
2. Assemble the new downlock hook with hardware as installed in the hook being removed.
3. Install the two stop bolts and bushings. The bolt heads must be installed outboard with one washer under
each nut. Torque the nuts 40 to 45 in. lbs.
4. Install the pivot bushing into the downlock hook and downlock arm. (Downlock arm must be installed with
the nose of the arm sloping downward.) Determine that the bushing moves freely in the downlock hook and
arm.
5. Install the pivot bolt. Torque to 160 to 190 in. lbs.
Proper installation of the downlock hook assembly and drag brace is as follows: Bolt,
one washer, bushing through downlock hook and downlock arm, one thin washer, drag
brace, two washers and one nut.
6. Support the drag brace assembly and place the hydraulic cylinder rod end in position on the downlock hook
assembly. Ensure that the bushing is installed on the inboard side of the downlock hook. Install the bolt
with the head outboard. Place one washer under the nut and torque the nut 40-45 in. lbs.
7. Slide the drag brace assembly into the wheel well and push the bolts out through the drag link on the left
side and the drag link and downlock arm on the right side. Install a teflon washer next to the drag link, a
large washer, a castlenut and safety with a cotter pin.
A thin washer is installed between the downlock arm and the drag brace bearing. A
bushing must be installed inside the bearing.
8. Install the downlock spring with the open end of the spring at the downlock hook faring inboard.
9. Allow the downlock hook assembly to seat over the eccentric bushing. Adjust the bushing to obtain
daylight to .003 clearance between the bottom of the bushing and the downlock hook.
10. After adjustment, retract the gear and torque eccentric bushing nut 40-45 in. lbs.
11. Cycle the landing gear a minimum of three times to ensure proper operation and engagement. (It may be
necessary to check the nose gear up/down micro switches for proper position. (Refer to appropriate section
of Chapter 32.) Ensure that landing gear is in the down and locked position.
12. Position cabin heater unit and secure.
13. Install wheel well close-out panel.
14. Close nose compartment and secure with four bolts.
15. Remove the airplane from jacks.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— Note —
— Note —
2H1
3 2 - 2 2 - 0 6
Page 32-33
Revised: May 15, 1989