5.
Bearing,Lower
6.
O-Ring, Inner Packing
7.
WiperStrip
8.
Washer
9.
Ring,Retainer
10.
Ring,Retainer
11.
Bushing,HousingTop
12.
Cylinder,Oleo
13.
Bushing,HousingBottom
14.
O-Ring, Packing
15.
Tube, Orifice
16.
Plate, Orifice
17.
Ring,Retainer
18.
GreaseFitting
19.
Fork
20.
BoltAssembly
21.
Fork Assembly
22.
TorqueLink, Upper
23.
Washer,Spacer
24.
Bolt Assembly
25.
Torque Link, Lower
26.
Tube, Piston
27.
ShimmyDampener
28.
BoltAssembly
29.
BoltAssembly
30.
Bolts and Safety Wire
31.
Bracket
32.
Bushing
33.
Stud,Door Uplock
34.
Placard,Service
35.
Housing,Oleo
36.
Bushing
37.
Bolt,Cap
38.
Bolt
39.
Plug,Filler
40.
AlignerGuide Bracket
41.
Valve,Air
42.
Arm, Steering
43.
Pin,Cotter
44.
SafetyWire(.041)
45.
Piston Ring
46.
Bushing,Steering
47.
O-Ring, Packing
48.
Plug, Piston Tube
28
49. Screw,Flush Head
50. Bushing
51. Seal
52. Pin,Metering
53. Nut, Washer, O-Ring
54. O-Ring
Nose Gear OleoStrut Assembly Figure 402 (Sheet1 of 2)
EFFECTIVITY:
040-999
32-20-00PAGE
Jan 10/90
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
A. NoseGear and Doors (continued)
SEE VIEW B
VIEWB
Nose Gear Oleo Strut Assembly
Figure 402 (Sheet 2 of 2)
EFFECTIVITY:
040-999
1
PAGE32-20-00
Jan 10/90
PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
A. NoseGear and Doors (continued)
11.Assemblyof Nose Gear Oleo (refer to 32-20-00 Figure 402) (continued)
(f)
At the top of the cylinder, tighten the orifice tube bolt.
(g)
Install the upper and lower torque links.
(h)Checkthe upper and lower oleo housing bushings are installed and lubricate the bearing surfaces lightly with Molykote No. 33. Install the cylinder into the oleo housing and securewith retainer ring.
(i) At the top of the oleo housing, installthe aligner guide bracket and steering armon the cylinder. Tighten cap bolts to 30 -35 inch-pounds and safety with MS20995C41
wire.
(j) Install the shimmy dampener. Rig shimmy dampeneras follows:
(1.) Rotate the nose gear to full right tow limit and retain.
(2.) Extend shimmy dampener to its full travel.
(3.) Adjust the rod end bearing untilthe attachment bolt fits the hole in the bracket.
(4.) Remove the bolt and turn the rod end bearing outone full turn.
(5.) Secure the rod end to the bracket with bolt, washer, andself-lockingnut.
(k)
Lubricatethe gear assembly. (Refer to 12-20-00 Chart 3 and Figure 302.)
(I)
Servicethe oleo strut with fluid and air. (Refer to Oleo Struts, 12-10-00)
(m)Checkthe nose gear for alignment and operation.
12. Inspectionof Nose Gear Oleo
(a) Inspect the landing gear oleo assembly component for the following:
(1.) Bearings and bushings for excesswear, corrosion, scratches,and overall damage.
(2.) Retaining pins for wear and damage.
(3.) Lock rings for cracks, burrs, etc.
(4.) Cylinder, cylinder steel insert, and orifice tube for corrosion, scratches,nicks, and excess
wear. (5.) Orifice plate for hole restriction. (6.) Fork tube for corrosion, scratches,nicks, dents, and misalignment. (7.) Air valve for general condition.
13.Cleaning of Nose Gear Oleo
Clean all parts with a suitable dry tube cleaning solvent.
14. Repairof Nose Gear Oleo
(a) Repair of the oleo is limited to smoothing out minor scratches,nicks and dents and
replacementof parts.
(b)Wiper strips on gear struts can be individually replaced (refer to 32-20-00).
EFFECTIVITY:
32-20-00PAGE
17
32-20-00 Jan 10/90
PIPER AIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL
A. NoseGearandDoors(continued)
15.Removalof Wiper Strip on Gear Strut
(a) Placeairplaneon jacks. (Refer to 7-10-00.)
(b)Jackairplanehigh enough to take weight off gear.
(c)
Releaseair pressure fromstrut by depressing thevalve core pin until pressure has diminished.
(d)
Usingsnap ring pliers, disengage snapring from annular slot in the oleo housing, allowingit to lay at the lowerend of the pistontube along with the wiper strip retainer washer.
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