L_39 Landing gear Issue

[ruthib4]

HI, I have a L-39 and it was very happy with it but suddenly the landing gear stated with issues. During a flight when trying to land, the gears didn't open and had to belly land, when i reviewed it and the gear open on the ground and after that it opens randomly.
Any idea?
Thanks

[Evan D]

Are the gear loose between the strut and retract unit? The set screws may be loose. Could the pin be bent, did you have a hard landing?

[ruthib4]

Thanks Evan, nope, they all are tighten

[ruthib4]

I did not had any hard landing, It just started like that during flight, before that flight.

[Evan D]

Look in the retract mechanics and there is a jack screw that move a slider along to extend or retract the strut. Take and apply a little grease on the jack shaft. Lithium is best but even vaseline will work.

[Tigercat]

Are all three gear not going down if that is the case I would che k for a loose connection in the retrac wiring starting at the receiver. Check for loose or bent pins .