Tail Landing Gear; Spring Steel; Removal; Cleaning, Inspection And Repair Of Tail Gear - Thrush Aircraft S2R–T660 Maintenance Manual

C. Check all welds for cracks at fuselage support brackets.
D. Repair of the landing gear is limited to reconditioning of parts, such as replacing components, bearings
and bushings, smoothing out minor nicks and scratches and repainting areas where paint has chipped
or peeled.

SPRING STEEL

The tail gear consists of a 1-inch thick alloy spring steel, tail gear sub-assembly fork assembly and wheel
assembly. The tail wheel is a locking type and is actuated from the elevator bellcrank by a cable. Centering
springs align the tailwheel, and a pin engages and locks the wheel in the trailing position. Pushing the control
stick fully forward disengages the locking pin and the wheel is free to caster for taxiing.
REMOVAL (Refer to fig. 6-1a)
A. Remove fuselage skins as required.
B. Using a suitable Jack. Jack and secure tail of aircraft, using jackpoint.
C. Remove outer dust cover (hubcap).
D. Remove cotter pin and axle castellated nut, then remove the tire/wheel assembly, and be sure to capture
the two- (2) P/N95435-11 spacers(refer to fig. 6-1), located on each side of wheel assembly.
E. Disconnect flex control lock cable at pivot arm and cable hold down clamp.
F. Disconnect centering springs from tail wheel centering arm assembly by removing attach bolt.
G. If disassembly of tail wheel/tire assembly is necessary, follow steps highlighted on page 6-5 and 6-6.
H. Remove main leaf spring assembly by removing NAS6607-56 bolt holding spring to forward
tail spring support assembly. Remove two-(2) each NAS6606-54 bolts that holds the lower
spring support block to upper support block. Note how many 90056-26 washers were
located on each side between support blocks.

Cleaning, inspection and repair of tail gear

A. Clean all parts with a suitable type cleaning solvent.
B. Inspect main leaf springs attach bolts for excessive wear.
C. Inspect all bolt holes for elongation.
D. Inspect main spring leaf for corrosion and cracks.
6 -3
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL

TAIL LANDING GEAR

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.
* NOTE *
Effective: 01/10/05
R1