C-130B model Right Landing Retraction Timing

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munirabbasi

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Unread post08 Dec 2020, 15:43

Hello Herks Hydro Expertise!

Retraction cycle Timing of Right landing ( B model aircraft) is exceeded (18 Sec) from prescribe given time seconds with UT hydraulic system but when retracting the landing gear with AUX hydraulic system on ground timing is with in limit ie 17 second . We have replaced right side of landing gear, the flow regulator, controllable restrictor valve, one way restrictor, hydraulic motor ,gear box,landing brake lock and HI.Torque two speed valve but defect was repeated again and again in every sortie. any expert opinion

Best Regards

Munir Abbasi

Home Hercules Pakistan
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MAIN LANDING GEAR.docx
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victorp1

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Unread post19 Mar 2021, 18:34

The only time I had a problem with a main landing gear slow to retract was when the flow regulator was unserviceable for the other main landing gear. They did a flow check on both main landing gear, one at a time and found the "Fast" gear was at fault. The flow regulator was changed and the aircraft was on the road again.

Vic
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munirabbasi

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Unread post15 Apr 2021, 14:03

We have replaced all equipment of Landing gear system, including hyd motor two speed gear box one restrictor , Flow control regulator and surge damper
Best regards
Munir Abbasi

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