Front sump oil pans have a block-mounted suction tube, which requires approximately 610 mm [24 in] clearance between the vehicle frame or axle and the cylinder block oil pan mounting flange to remove the oil pan.
If an application will not allow the oil pan to be lowered that much, the suction tube must be removed from the cylinder block before the oil pan can be removed from the chassis.
Remove the oil pan mounting capscrews. Lower the oil pan far enough to allow one hand to reach inside the engine and remove the suction tube mounting capscrew.
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