3.
Turn master switch OFF, pull out Free Fall Control.
4.
Disconnect the aft end of the cylinder from its attachment fitting by removing the connecting nut, bolt and washer.
5.
Pull out the cylinder rod to it full extended position. Measure and record the exposed length of the rod.
6.
Retract the cylinder rod as required and reconnect aft end of the cylinder to its attachment fitting using nut, bolt and washer.
7.
Loosen jam nut on secondary up stop and turn in so it will not interfere with initial rigging.
8.
Push in free fall control and retract the nose gear by turning the master switch ON and moving the gear selector handle to the UP position. Check the adjustment of the cylinder rod end bearing by placing a carpenters square with the longest end along the bottom of the fuselage, and the shortest end running up through the centerline of the wheel axle. Measure up along the square from the bottom of the fuselage 8.25 inches, to determine if the center of the wheel axle meets this measurement. If this measurement is incorrect, extend the gear, loosen the jam nut on the rod end bearing and make the required adjustment by turning the bearing in to raise wheel, out to lower.
9.
Turn secondary up stop out until finger tight against strut. Lower gear and turn stop out one additional turn and tighten jam nut.
10.
Tighten jam nut on rod end bearing and check that threads cover safety hole in actuator rod.
11.
Measure length of exposed rod. Subtract from value obtained in Step 5 and determine that at least
0.06 inches of travel remains to full extension.
12.
Adjust shimmy dampener by turning nose wheel stops and adjusting the rod ends of the dampener for 30° travel to both extremes.
13.
Reconnect both nose gear door actuation rods.
14.
Push in Free Fall Control, turn master switch ON. Retract landing gear and check doors.
15.
Lower gear. Turn master switch OFF. Ascertain that the landing gear is down and locked, then remove the airplane from jacks.
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AIRPLANE MAINTENANCE MANUAL
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THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL
ALIGNMENT OF NOSE LANDING GEAR.
1.
Place the airplane on a smooth level floor that will accommodate the striking of a chalk line.
2.
Ascertain that the nose gear is properly adjusted.
3.
With the landing gear in the downlock position, weight proportionally on the nose gear and the nose wheel facing forward, adjust the steering bellcrank. The bellcrank may be adjusted by loosening its attachment bolt and sliding the bellcrank fore and aft until it clears each steering arm rollers by .031 of an inch. Retighten the attachment bolt.
4.
Place the airplane on jacks. (Refer to Chapter 7.)
5.
Level the airplane laterally and longitudinally. (Refer to Chapter 8.)
6.
From the center point of the tail skid, extend a plumb bob and mark the center point on the floor.
7.
Extend a chalk line from the mark on the floor below the tail skid to a point approximately three feet forward of the nose wheel. Allow the line to pass under the wheel at the centerline of the tire. Snap the chalk line.
8.
Clamp the rudder pedals to align them in a lateral position. Ascertain that the rudder pedals are in their neutral position. (Refer to Figure 32-10.)
9.
Adjust the rod end bearings of each steering control rod to align the nose wheel with the chalk line and to bring the rudder pedals into neutral angle fore and aft.
10.
Install the steering push rods on the pilot's rudder pedals. Adjust the rods so the lengths are both the same and the rudder pedals are at their neutral position.
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THE NEW PIPER AIRCRAFT, INC.
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AIRPLANE MAINTENANCE MANUAL
11.
To align the nose wheel straight forward, stand in front of the nose gear and align the center rib of the tire with the chalk line, or lay a straight edge along the side of the tire and parallel the straight edge with the chalk line.
12.
Install the nose wheel bungee in its neutral position (no load on the bungee springs.) Adjust bungee rod ends as necessary.
13.
Place a bubble protractor against a rudder pedal steering tube to check the neutral angle as shown in Figure 32-11.
14.
One end of each rod must be disconnected and the jam nuts loosened to make any adjustments. Do not attempt to make the adjustment by means of one rod end bearing, but divide the adjustment between the bearings at each end of each rod. Check that the rod ends have sufficient thread engagement by ascertaining that a wire will not go through the check hole in the rod. Reinstall the rods and tighten the jam nuts.
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