Gear Actuating Cylinder Cleaning, Inspection And Repair; Gear Actuating Cylinder Assembly; Gear Actuating Cyilinder Installation; Gear Acatuating Cylinder Disassembly - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
c.
Remove the safety wire attached to the locknut (9) of the strobe control stop and lock (10).
Remove the stop (8) from the piston rod end.
d.
Remove the safety wire between the cylinder body (1) and gland locknut (7). Loosen the gland
locknut and with a spanner wrench remove the gland (5).
e.
Draw the piston (3) from the cylinder body.
6-123. CLEANING, INSPECTION AND REPAIR OF GEAR ACTUATING CYLINDER.
a.
Clean the cylinder parts with a suitable solvent and dry thoroughly.
b.
Inspect the cylinder interior walls and piston exterior surfaces for scratches, burrs, corrosion, etc.
c.
Inspect threaded areas for damage.
d.
Inspect the rod end fitting for wear and corrosion.
e.
Repairs to the cylinder are limited to polishing out small scratches, burrs, etc., and replacing
parts.
6-124. ASSEMBLY OF GEAR ACTUATING CYLINDER. (Refer to Figure 6-23.)
a.
Install "O" rings (2) on the body of the piston assembly (3).
b.
Install "O" rings (4 and 6) on the exterior and in the interior of the packing gland (5).
c.
Lubricate the piston assembly (3), interior of the cylinder body (1) and the packing gland (5)
with hydraulic fluid, MIL-H-5606.
d.
Slide the packing gland onto the shaft of the piston assembly.
e.
Slide the piston assembly into the cylinder and with spanner wrench turn the packing gland into
the cylinder to a snug fit. Install gland locknut (7) and safety to the cylinder with MS20995C32 lock wire.
f.
Turn the stop (8) of the stroke control on the cylinder rod and install locknut (9) and lock (10).
g.
Install the rod end (13), locknut (11) and lock (12) on the piston rod.
h.
Adjust rod end (13) to preliminary length obtained before disassembly. Before securing the
locknuts of the stroke control stop and rod end with MS20995C32 lock wire, ascertain that the stroke
control stop and rod end fitting are properly adjusted. (Refer to Adjustment of Landing Gear, Section VII.)
6-125. INSTALLATION OF GEAR ACTUATING CYLINDER.
a.
Position the attachment end of the cylinder and the uplock rod end of the nose gear or the
uplock crank assembly of the main gear on their mounting bracket, install attachment bolt and secure.
b.
Connect the operating rod end of the cylinder to the gear link assembly.
c.
Connect the hydraulic lines to the cylinder.
d.
Check operation of the installation and landing gear rigging as given in Section VII.
e.
Remove the airplane from jacks.
6-126. GEAR ACTUATING CYLINDERS (WIEBEL TOOL).
6-127. REMOVAL OF GEAR ACTUATING CYLINDERS. (Same as Paragraph 6-121.)
6-128. DISASSEMBLY OF GEAR ACTUATING CYLINDER. (Refer to Figure 6-24.)
a.
Before disassembly establish rod end engagement distance to aid in preliminary assembly of the
actuating cylinder.
b.
Loosen nut (11) to disengage key (15) and remove rod end (12).
c.
Cut safety wire (14) and remove. Remove nut (10), key (13) and stop (9) from piston (3).
d.
Remove safety wire (16) and end cap (6) from the cylinder body (1) by unthreading end cap (6)
and pulling out the piston (3).
e.
Slide end cap (6) from the piston (3).
6-129. CLEANING, INSPECTION AND REPAIR OF GEAR ACTUATING CYLINDER. (Same as
Paragraph 6-123.)
Reissued: 9/23/80
HYDRAULIC SYSTEM
2C20