THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
REMOVAL OF BRAKE MASTER
CYLINDERS
Ref. figure 6-5
A. Disconnect and cap hydraulic lines.
B. Remove master cylinder retaining
bolts.
C. Remove master cylinder.
Disassembly and Repair
Master cylinder repair is limited to
replacement of parts, cleaning and
adjustment. Use clean hydraulic fluid
MIL-H-5606 as a lubricant during re-
assembly of the cylinders.
Master Cylinder Installation
To install the brake master cylinders,
reverse the removal procedures and fill
and bleed brakes as outlined in this
section.
BRAKE BLEEDING
Ref. figure 6-2 and Section 3
To bleed the brakes proceed as follows:
A. Place parking brake control in OFF
position.
B. Prepare a piece of 5/32” clear plastic
(preferred) or rubber (any color)
tubing at least 12 inches long.
Remove bleeder screw dust cap.
Install one end of hose onto bleeder
screw.
C. Place free end of hose in a clean
glass receptacle containing enough
hydraulic fluid to cover end of hose.
End of bleeder hose must be
submerged at all times to properly
check for air bubbles and prevent
entry of air into hydraulic system.
D. Apply brake pressure and open
bleeder screw approximately 1/3 to
½ turn, close bleeder screw before
releasing brake pressure to avoid
reentry of air into brake system.
Repeat this procedure until system is
free of air.
E. Tighten bleeder screw, remove
rubber hose and replace dust cap.
F. Repeat bleeding procedure for
opposite brake.
*NOTE*
Keep master cylinder
reservoir full of MIL-H-5606
hydraulic fluid throughout
the bleeding operation.
TAIL LANDING GEAR
Ref. Figure 6-6
TAIL GEAR REMOVAL
A. Remove fuselage skins as required.
B. Using a suitable Jack. Jack and
secure tail of aircraft, using jack
point.
C.
Remove cotter pin and axle
castellated nut, and spacer P/N
CA84106-05-2, and then remove the
tire/wheel assembly.
D. Disconnect flex control lock cable at
pivot arm and cable hold down
clamp.
E. Disconnect centering springs from
tail wheel centering arm assembly by
removing attach bolt.
* NOTE *
Do not alter lock cable or
elevator travel stops.
Alteration of tail gear lock
cable or elevator travel
stops will require re-rigging
of tail wheel locking
system.
F. If disassembly of tail gear wheel/tire
assembly is necessary, follow steps
given on page 6-16.
G. Remove main leaf spring assembly
by removing NAS6207-38D bolt
(Replace annually) holding spring to
6-12
Effective:
01/01/08
