Piper Arrow IV Turbo Maintenance Manual page 350

CLEANING, INSPECTION AND REPAIR OF NOSE GEAR ACTUATING CYLINDER.
1. Clean the cylinder parts with a suitable dry type solvent and dry thoroughly.
2. Inspect the cylinder assembly for the following:
A. Interior walls of the cylinder and exterior surfaces of the piston for scratches, burrs, corrosion, etc.
B. Threaded areas for damage.
C. Rod end fitting and swivel fitting of cylinder for wear, cracks and corrosion.
D. O-rings for damage.
3. Repairs to the cylinder are limited to polishing out small scratches, burrs, etc. and replacing parts.
ASSEMBLY OF NOSE GEAR ACTUATING CYLINDER. (Refer to Figure 29-9.)
1. Install O-ring on the exterior of the end gland.
2. Install O-ring in the interior of the end gland.
3. Install O-ring on the body of the piston assembly.
4. Install the spacer into the cylinder body if applicable.
5. Lubricate the areas around the O-rings with hydraulic fluid, slide the end gland on the piston rod and
the piston into the cylinder housing.
6. Install end gland by threading the gland into the cylinder body and tighten 20 + 1 foot pounds torque
and safety with MS20995C32 wire.
7. Install restrictor fitting in the piston rod end of the cylinder.
8. Check smoothness of operation of the piston.
INSTALLATION OF NOSE GEAR ACTUATING CYLINDER.
1. Attach the cylinder to its attachment fitting using bolt and nut.
2. Attach the operating rod end to the downlock hook using bolt. Install nut after adjustment is
completed.
3. Connect the hydraulic lines to the cylinder fittings.
4. Check the adjustment of the cylinder rod end. (Refer to Adjustment of Nose Landing Gear, Chapter
32.)
5. Operate pump to purge system of air and check fluid level in reservoir.
6. Remove the airplane from jacks.
MAIN GEAR ACTUATING CYLINDER.
REMOVAL OF MAIN GEAR ACTUATING CYLINDER.
1. Place the airplane on jacks. (Refer to Jacking, Chapter 7.)
2. Disconnect the hydraulic lines from the actuating cylinder and cover the open line ends to prevent
contamination.
3. Disconnect the gear downlock spring from the swivel fitting at the upper end of the spring.
4. Remove the downlock spring swivel fitting and disconnect the cylinder operating rod end from the
upper side brace retraction fitting by removing the attaching nut~ washer and bolt.
5. Disconnect the cylinder from its attachment by removing nut and bolt.
6. Remove the cylinder from the wheel well.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
2C23
29-10-20
Page 29-29
Revised: July 13, 1983