| 21. | This involves unscrewing the old rod, removing it from the tank and installing a new one.
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| 22. | Prototypes are made by cutting and taping, and unscrewing and screwing together parts from older instruments.
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| 23. | During removal, the cutting edges are torn and no longer have full strength to resist unscrewing.
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| 24. | In these cases, the unit can be opened up by unscrewing every screw on the back.
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| 25. | "It's unscrewing the valve that would let the motor oil gush forth ."
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| 26. | Some older models are threaded on to this pipe nipple and these must be removed by unscrewing them.
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| 27. | The differential fluid is checked by unscrewing the speed sensor gear assembly and use it as a dipstick.
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| 28. | Turn off the electric power and dismantle the fixture if necessary, before unscrewing it from its ceiling box.
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| 29. | In conventional configurations, customers have to crawl under the truck to access the oil filter before unscrewing it.
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| 30. | Next, Bugs is in the attic unscrewing the screws holding the ceiling light over Rocky's head.
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