| AN 01-25CN-2 | PARAGRAPH 1 |
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through the two tightening holes in web 3. (See Fig. 49.) Be sure that the attachment for the landing gear position transmitter cable is installed on the inboard retracting arm. 4. Tip the retracting arms so that the lower retracting links attachment end protrudes through the openings on the under surface of the wing far enough to provide clearance to attach the lower retracting links to the retracting arms. Attach the links to the arms with the attaching bolts and tighten the nuts. Do not tighten the nuts excessively. Safety the nuts with cotter pins. 5. Slide the lower retracting links onto the lower trunnion fittings, install and take up the nuts, and safety the nuts with cotter pins. 6. Attach the retracting arms at the pivot point in the wing with the through bolt. Do not tighten the nut on the through bolt excessively. Safety the nut on the bolt with. a cotter pin.
7. If the retracting cylinder has been re. moved, replace the cylinder in the wing by working through the wheel well. Slide the retracting cylinder through the web cut-outs and guide the attachment fitting on the aft end of the cylinder onto the three bolt studs on the wing support. Install lock nuts on the three studs. 8. Attach the upper retracting links to the piston end on the retracting cylinder with a through bolt and tighten the nut. Do not tighten the nut ex. cessively. Safety the nut with a cotter pin. 9. Connect the two hydraulic lines to the retracting cylinder, and the brake line to the wheel at the torque plate fitting. Attach the two clamp, fittings supporting the brake line to the oleo cylinder. 10. Coat the wheel bearings with Mobilgrease "Zero" and slide the wheel and tire onto the axle. Install the axle nut and take it up snugly. Back the nut off until the wheel turns freely and safety the nut with a cotter pin. Install the axle cap and button the outer wheel fairing on with\the four Dzus fasteners. |
11. Lubricate the landing gear assemble with Mobilgrease "Zero" at all Zerk fittings with a pressure gun. Do not miss any of the fittings on the links or retracting cylinder end. (See Fig. 58.) 12. Test the landing gear for proper operation with both the electric hydraulic motor-driven pump and the auxiliary hand pump. 13. Test the bevel and pinion gears for back. lash adjustments. If there is too much backlash (over .002 inch), remove the shim from the top of the pinion gear ring and place it on the bottom. If the gears appear to bind and have no backlash, remove the shim from below the pinion gear ring and place it above the gear. 14. Connect the position indicator linkage and adjust the indicator to produce the correct posi. tion in the wing. 15. Replace the landing gear fairing. 16. Connect the inboard fairing door turn-buckleto the side brace and the outboard door linkage to the support on the pinion gear. Adjust the turnbuckles so that the doors close tightly when the land. ing gear is fully retracted. 17. Lower the airplane to the taxiing position and deflate the strut by backing off the filler plug slightly to allow the air to escape slowly past the copper gasket at the plug seat. This procedure will prevent damage to the valve core caused by the sudden rush of highpressure air past its seat. Do not attempt to ten ove the filler plug without first completely deflating the strut. 18. Back off the filler plug until all fizzing of air and fluid ceases. 19. Remove the filler plug and fill the strut with hydraulic oil (Spec. 3586) until it is level with the plug hole. 20. Insert the plug loosely and cause the strut to be completely extended and retracted several times, preferably by raising and lowering the airplane with a hoist or jack. This method will eliminate air trapped in the strut. 21. Remove the plug and check the fluid level. If additional fluid is added, repeat the procedure out. lined in 20. each time fluid is added until the proper fluid level is obtained. |
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