西门诺尔飞机维护手册 simenole PA-44-180 AMM 2(2)

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A.  Ascertain that the rod end bearing of the actuating cylinder is disconnected from the retraction fitting.
B.  Actuate the hydraulic system to bring the hydraulic cylinder to the up position by turning the master switch on and moving the gear selector handle to the up position. The piston of the cylinder should be bottomed.
C.  Raise the gear by pushing up on the retraction fitting, thus disengaging the hooks, and pushing up on the pivot point at the bottom of the side brace links to bring the links out of the locked position. Raise the gear until the fork presses lightly into the rubber pad. Retain the gear in this position.
D.  Loosen the jam nut on the piston rod of the actuating cylinder and turn the rod end bearing in or out to allow a slip fit of the attachment bolt.
E.  Install with the attachment bolt, bushing, spring swivel, and secure with washer and nut. Install the gear downlock spring.
— Note —
When adjusting rod end be sure to allow at least a .03 inch cushion prior to bottoming with the downlock in the up position.
F.  When the gear is to within .125 of an inch of correct adjustment, the rod end need not be disconnected and therefore all that will be required is to loosen the jam nut. place a wrench on the flat at the end of the piston rod and turn to obtain correct adjustment.
G.  Check the rod end bearing for adequate thread engagement and tighten jam nut.
H.  If the downlock limit switch is properly adjusted, retract and extend the gear hydro-electrically to ascertain that the gear operates properly.
32-10-00 Page 32-28 Revised: December 6, 2002
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THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL

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32-10-00 Page 32-29 Revised: December 6, 2002
THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL

CHART 3202. TOE-IN / TOE-OUT CORRECTION 
TOE-IN 
TOE-OUT  SHIM  WASHERS  WASHERS  AN 174 
ANGLE  WASHERS  UNDER HEAD  UNDER NUT  BOLT 
0°  AN960-416  AN960-416 (3)  -14 
0° 33'  AN960-416  AN960-416  AN960-416 (2)  -14 
0° 48'  AN960-416L  AN960-416  AN960-416  -14 
AN960-416 
1° 04'  AN960-416 (2)  AN960-416  AN960-416  -14 
1° 19'  AN960-416L  AN960-416L  AN960-416  -14 
AN960-416 (2) 
1° 35'  AN960-416 (3)  AN960-416  AN960-416 (2)  -15 
2° 05'  AN960-416 (4)  AN960-416  AN960-416  -15 
Max. Allow. 
AN960-416L Washers .031 Thick 
AN960-416 Washers .062 Thick 

ALIGNMENT OF MAIN LANDING GEAR. (Refer to Figure 32-4.)
1.  
Place a straightedge no less than twelve feet long across the front of both main landing gear wheels. Butt the straightedge against the tire at the hub level of the landing gear wheels. Jack the airplane up just high enough to obtain a six and one-half inch dimension between the centerline of the strut piston and the centerline of the center pivot bolt of the gear torque links. Devise a support to hold the straightedge in this position.

2.  
Set a square against the straightedge and check to see if its outstanding leg bears on the front and rear side of the brake disc. (It may be necessary to remove the brake assembly to have clear access to the disc.) If it touches both forward and rear flange, the landing gear is correctly aligned. The toe-in for the main landing gear wheels is 0 ± 1/2 degrees.

— Note —
A carpenter's square, bccause of its especially long legs, is recommended for checking main landing gear wheel alignment.
3.  
If the square contacts the rear side of the disc, leaving a gap between it and the front flange, the wheel is toed-out. If a gap appears at the rear flange, the wheel is toed-in.

4.  
To rectify the toe-in and toe-out condition, remove the bolt connecting the upper and lower torque links and remove or add spacer washers to move the wheel in the desired direction. Refer to the Toe-in/Toe-out Correction Chart 3202.

5.  
Should a condition exist that all spacer washers have been removed and it is still necessary to move the wheel further in or out, then it will be necessary to turn the torque link assembly over. This will put the link connecting point on the opposite side allowing the use of spacers to go in the same direction.

32-10-00 Page 32-30 Revised: December 6, 2002
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THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL

32-10-00 Page 32-31 Revised: December 6, 2002
THE NEW PIPER AIRCRAFT, INC.
　
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