Model: 95P10AR
Two Stage Hydraulic Aviation Floating Auto-Retract Axle Jack
S/N 263 and Up
12/2018 | Rev. 01 Page | 11
7.0 MAINTENANCE (continued)
7.5 TESTING:
Place jack in a load indicating test fixture. Make sure the test adapter is 3/4 inch male spherical radius. Operate hand pump to
extend outer plunger fully and inner plunger partially. Make sure ship adapter and test adapter are correctly mated. Load test
the jack at rated capacity of 95 tons. If the jack fails to operate properly, check for trouble as indicated in 6.0 Trouble Shooting.
With plungers extended and supporting the capacity load, allow the jack to stand for 10 minutes. Any excess settling indicates
leakage in the hand pump, check valves or jack packing seals. Check for hydraulic fluid leaks and replace all defective parts.
If adjustment is required for the safety pop-off valve, perform the following procedure:
1. Cut, remove and discard lead & wire seal (figure 4, item 39).
2. Remove plug (figure 4, item 35). Close release valve (figure 1C, item 31).
3. Place jack in a load indicating test fixture. Make sure the test adapter is 3/4 inch male spherical radius. Operate hand
pump to extend plungers against the test adapter. Make sure ship adapter and test adapter are correctly mated.
4. While operating the hand pump, adjust set screw (figure 4, item 29) until the safety pop-off valve by-passes hydraulic fluid
back to the reservoir at 98.8 to 100.7 tons.
5. Replace plug (figure 4, item 35). Once more operate hand pump to verify correct setting.
6. Install new lead & wire seal (figure 4, item 39).
7. Open release valve to relieve pressure.
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