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...It must be removed in order to take off the oil pump.  Raise the truck on a lift, and loosen the oil pan bolts and two of the bellhousing bolts to lower the pan about 1/2 inch. The concern is that  the bolt holding the pick-up tube to the pump might tumble into the oil pan by mistake. To counter this, reinstall one of the timing-cover bolts in the block. Loosen the oil pump pick-up bolt two turns, the tie a length of monofilament around the bolt to secure it and attach the other end to the timing-cover bolt. Then remove the pick-up bolt and the four (light-colored) bolts holding the oil pump to the block. Ease the pump off the pick-up tube and take it from the block.
More Lift, More Duration

...It must be removed in order to take off the oil pump. Raise the truck on a lift, and loosen the oil pan bolts and two of the bellhousing bolts to lower the pan about 1/2 inch. The concern is that the bolt holding the pick-up tube to the pump might tumble into the oil pan by mistake. To counter this, reinstall one of the timing-cover bolts in the block. Loosen the oil pump pick-up bolt two turns, the tie a length of monofilament around the bolt to secure it and attach the other end to the timing-cover bolt. Then remove the pick-up bolt and the four (light-colored) bolts holding the oil pump to the block. Ease the pump off the pick-up tube and take it from the block.  View Related Article

 

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