Piper ARROW III, Руководство по обслуживанию

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7-15. REMOVAL OF NOSE GEAR DOOR ASSEMBLY. (Refer to Figure 7-7 or 7-8.)
a. The nose gear assembly on the PA-28R-201 may be removed as follows:
1. With nose gear extended, disconnect the door retraction rods (1) from the doors (2) by removing
nut, bolt and washers.
2. 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. The bottom cowl may be removed to facilitate easier removal.
3. Remove the bellcrank assembly (4) of the door retraction mechanism by removing the attached
hardware, disconnecting the door down tension spring (3) and removing the cotter pins (8) at each
end of the pivot tube. Slide the insulating sleeve and bushing tube from the bellcrank.
4. Remove the roller assembly of the mechanism by removing the attached hardware and pivot bolt
with insulator.
b. The nose gear assembly on the PA-28R-201T may be removed as follows:
1. With nose gear extended, disconnect the door retraction rods (1) from the doors (2) by removing
nut, bolt and washers.
2. 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.
3. Remove the arm assembly by removing the upper arm assembly nut and bolt (5), carefully
disconnecting the door down tension springs (3) and removing the cotter pin, nut, bolt, washer and
bushings (6).
4. Remove the roller (7) by removing the attached hardware and pivot bolt.
7- 16. CLEANING, INSPECTION AND REPAIR OF NOSE GEAR DOOR ASSEMBLY.
a. Clean all parts with a suitable cleaning solvent.
b. Inspect doors for cracks or damage, loose or damaged hinges and brackets.
c.
Inspect door retraction rods for damage and rod end bearing for corrosion.
d. 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-28R-201 or below 20.0
pounds pull at 4.00 inches for the PA-28R-201T.
e. Check general condition of bellcrank and roller assembly on the PA-28R-201 or the arm assembly and
roller on the PA-28R-201T.
f. Repairs to the doors may be replacement of hinges repair of aluminum or fiberglas and painting.
g. Repairs to the retraction mechanism is limited to replacement of parts, sanding and painting.
7-17. INSTALLATION OF NOSE GEAR ASSEMBLY. (Refer to Figure 7-7 or 7-8.)
a. The nose gear door assembly for the PA-28R-201 may be installed in the following manner:
1. The roller assembly (5) of the retraction mechanism may be installed by first assembling the roller
(6), threaded link (7) and roller links (5), and then installing this assembly on its mounting bracket.
Ascertain that an insulator sleeve is installed with the attachment bolt and link bolt.
2. The bellcrank assembly (4) 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.
3. 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.
b. Install the cowl and adjust doors as given in Paragraph 7-18.
1. The roller (7) of the retraction mechanism may be installed on the arm assembly (4) with pivot
bolt and nut.
Revised: 2/13/89
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* CHEROKEE ARROW III SERVICE MANUAL
LANDING GEAR AND BRAKE SYSTEM