Instructions for checking jack leaks
Sorry for taking so long. Here is the information for checking leveling jacks for leaks:
Hydraulic landing gear (HLG), rear stab jacks or leveling jacks
1. Retract jack in question. If retracting HLG, both jacks will retract. If retracting leveling jack, all jacks will retract.
2. Once jack is fully retracted, remove the extend hose (hose located at the top of the jack). If testing ROAD SIDE HLG or REAR STAB JACKS, the hose will be mounted to a red restricted flow valve block.
Do not attempt to EXTEND jack. The system will experience RAPID FLUID LOSS.
3. When the hose is removed, push the RETRACT button again.
A. If fluid comes from the jack while the retract button is being pressed, the hydraulic cylinder is bypassing the internal seal and must be replaced. (See TI-039 for this procedure).
B. If no fluid comes from the cylinder during this retract procedure, the cylinder is good.
C. If no fluid comes from the JACK but does come from the HOSE, test the opposite jack (HLG and Rear Stabs only).
Feel free to contact me if you have any questions. I also have instructions for changing out the jack if you want it.
|