How many hours labor should I expect to pay to replace the seal ring at the bottom of the IP? OM602 Part 004 997 13 40.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Labor rates vary widly within a City and even more so from Region to Region.

You might call your local Mercedes Dealer and ask the the Cost and the hours it takes; they will have a Book with the estimated time it takes to do the various repair jobs.

With that infomation you will have sort of a guide to go by.

I don't know which Engine goes into which Vehicle. Knowing that might be helpful to someone. If you call the Dealer they are going to want that info.

Also I can't tell from the Part Number but I am guessing it is the Pan on the Bottom that is leaking. If it is the O-ring between the IP and the Engine Block the IP has to be pulled back far enough to change the Ring.

If it is the Pan Seal someone here on the Forum might know if there is enough room to do that with the IP still on the Vehicle or not.

Also it is not unknow for the Cover Gasket on the side of the IP to Leak. When it does it leaks at the rear and down past the Fuel Supply Lift Pump. Someone not taking a close look might think the leak is on the bottom of the IP.
The other areas that leak are the Throttle Shaft O-rings.

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84 300D, 82 Volvo 244Gl Diesel

Here is a thread on the Pan seal. If the IP has to come off it is a good time to change the IP to Block O-ring.
IP Bottom Plate Oil Leak

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84 300D, 82 Volvo 244Gl Diesel

That would seem to make sense....so I guess I'm looking at the cost to replace both the seal ring and the o-ring.

This is for the 92 300D.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife