Installation; Tail Gear Rigging - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT INC – MODEL S2RHG-T65 TURBO THRUSH
E. Inspect lock pin lower plate and lock pin top plate assembly for cracks, corrosion
and damage.
F. Repair of tail gear sub-assembly is limited to reconditioning of parts such as
replacing bearings and bushings, smoothing out minor nicks and scratches,
repainting chipped or peeled areas and replacement of component parts.
The tail gear may be installed by reversing the removal procedures. Ensure that
trunnion is straight down (6 O'clock position) and that leaf spring support blocks grips
the leaf spring tightly to prevent movement fwd. or aft. (Add or subtract P/N 90056-26
washers/spacers (.063") between upper and lower support blocks to achieve a tight grip
of leaf spring after bolts are properly torqued.) All bolts shanks and bolt holes are to be
coated with Snap-on™ General Purpose Antiseize lubricant or equivalent before
installation. Lubricate all bearings, bushings, and Zerk (grease) fittings with MIL-G-
81322 (Aeroshell 22) grease. Torque all hardware in accordance with TORQUE CHART
(figure 2-7) with the exception of the top spindle castellated nut and wheel/tire axle
castellated nut, which should be torqued as follows:
A. While manually rotating spindle, torque spindle castellated nut to 20 inch-pounds,
continue rotating spindle and back off to zero inch-pounds. While manually
rotating spindle, torque nut to 10 inch pounds. If not in locking position, advance
nut to next position, not to exceed 30º, and install cotter pin. Bend ends of cotter
pin around spindle castellated nut. Note: Spindle must rotate freely without
perceptible play.
B. For tail wheel axle castellated nut: While manually rotating wheel/tire, torque axle
castellated nut to 80 inch-pounds, continue rotating wheel and back off to zero
inch-pounds. While manually rotating wheel/tire, torque to 30 to 40-inch pounds.
Rotate axle castellated nut (clockwise or counterclockwise) to nearest slot and
cotter pin hole, and insert cotter pin. Bend ends of cotter pin around axle nut.
Note: Wheel/tire must rotate freely without perceptible play.
C. After the components have been installed, seal the contact edges where the
spring P/N 94135-1, upper support block P/N 94134-3, lower support block P/N
94134-5 and spacer P/N 95434-11 come together with a high quality flexible
silicone sealant or fuel tank sealant CS3204 B2 (AMS-S-8802 formerly MIL-S-
8802) to help block the collection of potential corrosive contaminants in this area.
D. Carefully lower aircraft to ground and remove Jack.
E. Recheck tire inflation pressure (6.00-6 8pr is 55psi) and install dust cover
(hubcap).
Rigging will be required if lock cable or elevator travel stops have been altered in any
way. Rig as follows:
A. Place elevator in a 17 (±1) degrees down position.
B. Connect lock cable to pivot arm.
6-6
AIRCRAFT MAINTENANCE MANUAL

INSTALLATION

(See Figures 6-1 & 1a)

TAIL GEAR RIGGING

Effective: 9/16/05