CONVERTING THE D-5 AND D-6 HYDRAULIC TEST STANDS
FROM MIL-H-5606 TO MIL-H-83282 HYDRAULIC FLUID
D-1. Open main reservoir drain valve, and drain all
MIL-H-5606 hydraulic fluid. Close drain valve.
D-9. Start the test stand, and set the volume control for
five gallons per minute. Operate the test stand for ten
Fill reservoir with six gallons of MIL-H-83282 hydraulic
minutes. During this period, switch the flow control
valve back and forth between the 1/2 inch and 3/4 inch
outlets at one minute intervals.
D-2. Open reservoir shut-off valve.
D-10. Open the bypass valve. Close the 1/2 inch and
3/4 inch flow control valves. Operate the stand for one
D-3. Open high pressure gage shut-off valve.
D-4. Close bypass valve.
D-11. Close the bypass valve for 10 seconds to force
oil past the relief valve. Re-open the bypass valve.
D-5. Remove quick disconnect fitting for one inch return
hose from stand, and allow all fluid in the line to drain.
D-12. Shut down the stand.
Install the quick disconnect fitting.
D-13. Drain the reservoir and refill with six gallons of
D-6. Open the 1/2 inch and 3/4 inch flow control valves.
D-7. Connect the 1/2 inch and 3/4 inch hoses to their
D-14. Repeat steps D-2 thru D-12.
respective quick disconnect fittings on the test stand.
Remove the quick disconnect fittings from the free end
of the hose assemblies and insert the free ends into the
D-15. Drain reservoir and refill with MIL-H83282.
fill neck of the reservoir.
D-8. Drain all fluid from the low and high pressure