Two things. I need a picture and or diagram of the vacuum layout for the 83-300td. swapped motors beliveImessed up routing.
Also what is the percentage of oil that flows thru oil cooler noticed the lines to cooler are cool while the filter tank is hot.

Thanks

For your question on the vacuum diagram, I would suggest that you use the search function button on this page. Type in 'vacuum diagram' and you will get about three pages of threads. Believe that one of those has several pictures of the routing diagrams. On the one about the oil cooler, it only opens up after the oil reaches a certain temp. So, until the oil gets to the right temp, there is essentially no flow thru the cooler. Can't say what % goes thru after the valve opens but it is probably progressive!?!

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1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150

Chaz13

Did you find a suitable diagram?

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1983 300td 240k (down with bad tranny)
1984 300d 222k (daily driver) "Olive"
1997 GMC K2500 105k (sled dog limo)

"The scenery in ANWR is as spectacular as the Grand Canyon and the wildlife is more impressive."

Have found some diagrams but they aren’t clear when printing. I drove this motor and trans in another vehicle it ran and sounded great. Now it shakes a little and lacking power also running a little warm. Wondering if this is more of a fuel problem because when warm I hear a slight nock, which I believe, is fuel related. Even when running warm the oil cooler lines are sill cold could there be a thermostat for that? Also is there a high oil temp switch on these vehicle because it wont crank until it cools down a little. Temp gauge is between 80 and 90 use to run a solid 80.

Thanks for any help

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1983 300D Turbo Diesel

As far as I know there is not a high oil temp switch on these vehicles which would stop it from cranking until it cools down. However the starter solenoid is often very affected by hi temps as it is close to the exhaust and can cause your symptoms.

The problem with running a little warm, can be related to the radiator and other cooling system components. Did you bring those items along with the engine and tranny? With the temp gauge between 80 and 90, though, you are in about the same area many on this board report as normal..

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1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150

Both engines ran the same temps in their orig chassis. I did use straight anti freeze when replaced prabally should mix down to 50/50. Motor still shakes a little and when warm can hear a slight nock i think is fuel related. I would like to find a clear piture of vacuum layout to rule that part out .I think its a little warm because of a lean fuel condition chaged fuel filters next will check tank strainer.

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1983 300D Turbo Diesel

Here are all the vacuum diagrams for 123 and 126 diesels

Pictures of Vacuum diagrams for W123 and W126 diesels

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

This could be part of your problem. Straight water is a better coolant than antifreeze, I've been told, so adjust your mix down and and the temps may come down too.