I had my whole IP out and dumped the oil and fuel out. I didn't have it bone dry but dryer than you'll get it with the o-ring job and there wasn't much clacking. I had it running like new in a little more time than it usually takes to purge the air after a fuel filter change. And yes as Don recommended it's a good idea to change the copper washers. Don't worry, it'll run good right away if everything is done right. I wouldn't be nervous about the job. Just take your time.

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-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.