Piper Arrow IV Turbo Maintenance Manual page 397

2. The nose gear door assembly on the PA-28RT-201T may be removed as follows:
A. With nose gear extended, disconnect the door retraction rods from the doors by removing nut, bolt
and washers.
B. To remove the door(s) from the cowl, bend one end of the hinge pin straight and from the other
end pull out the pin.
C. Remove the arm assembly by removing the upper arm assembly nut and bolt, carefully
disconnecting the door down tensin springs and removing the cotter pin, nut, bolt, washer and
bushings.
D. Remove the roller by removing the attached hardware and pivot bolt.
CLEANING, INSPECTION AND REPAIR OF NOSE GEAR DOOR ASSEMBLY.
1. Clean all parts with a suitable cleaning solvent.
2. Inspect doors for cracks or damage, loose or damaged hinges and brackets.
3. Inspect door retraction rods for damage and rod end bearing for corrosion.
4. Check the door tension springs for wear and tension below minimum allowable tolerance. Reject
springs if load tension is below 8.0 pounds pull at 4.75 inches for the PA-28RT-201 or below 20.0 pounds pull
at 4.00 inches for the PA-28RT-201T.
5. Check general condition of bellcrank and roller assembly on the PA-28RT-201 or the arm assembly
and roller on the PA-28RT-201T.
6. Repairs to the doors may be replacement of hinges, repair of aluminum or fiberglass and painting.
7. Repairs to the retraction mechanism is limited to replacement of parts, sanding and painting.
INSTALLATION OF NOSE GEAR DOOR ASSEMBLY. (Refer to Figure 32-10 or 32-11.)
1. The nose gear door assembly for the PA-28RT-201 may be installed in the following manner:
A. The roller assembly of the retraction mechanism may be installed by first assembling the roller,
threaded link and roller links, and then installing this assembly on its mounting bracket. Ascertain
that an insulator sleeve is installed with the attachment bolt and link bolt.
B. The bellcrank assembly of the retraction mechanism may be installed by positioning the bellcrank
between its mounting bushing and inserting the insulator sleeve and bushing tube. Install a cotter
pin through each attachment bushing and the pivot tube. New tubes will require a .070 hole drilled
through each end to facilitate a cotter pin. Use the existing hole in the mounting bushings as a
guide. Do not connect link between roller assembly and bellcrank until time of door adjustment.
C. Install the gear door(s) by positioning the hinge halves of the door and cowl, and inserting the
hinge pin. It is recommended a new pin be used. Bend the end of the pin to secure in place.
D. Install the cowl and adjust doors as given in Adjustment of Nose Gear Doors.
2. The nose gear door assembly for the PA-28RT-201T may be installed in the following manner:
A. The roller of the retraction mechanism may be installed on the arm assembly with pivot bolt and
nut.
B. The arm assembly may be installed by placing the arms on either side of the bracket and securing
with bolt, bushings, nut, washer and cotter pin.
C. Install the gear door(s) by positioning the hinge halves of the door and cowl, and inserting the
hinge pin. It is recommended a new pin be used. Bend the end of the pin to secure in place.
D. Install the cowl and adjust doors as given in Adjustment of Nose Gear Doors.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
2E22
32-20-12
Page 32-39
Revised: February 23, 1979