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Old 04-28-2004, 03:58 PM
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Pulling the Engine from a 300SD

My 300SD threw a rod and I am going to replace the motor with a used one. It appears, from the literature, that the trans must be pulled with the engine, is this true? Are there any other details I should know before taking on this job? Any special tools required?

Thanks

Richard

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Old 04-28-2004, 08:45 PM
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im not sure on how hard it would be but i would make sure to replace any gaskets and seals that might leak on your donor engine
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Old 04-28-2004, 09:01 PM
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By all means pull the tranny/engine as a unit. I have done it both ways and pulling them together is alot easier than separating them. Replace the front/rear crank seals and the oil filter housing and IP pump gaskets prior to installing the new engine. May as well replace both front/rear tranny seals too.
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Old 04-28-2004, 09:01 PM
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you can do it without removing the tranny, but, if you remove both the engine and tranny, it would be a great time to do what the other gentleman said as far as replacing gaskets, rubber boots/ flex discs, tranny shifter bushings, etc. you will find that those two upper bolts are a lot easier to remove with the tranny out of the car. the tranny is pretty small on these - nothing like on an old chevy or something like that.
have fun, adam
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Old 04-28-2004, 09:20 PM
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Another thought is if you do not have a big impact wrench go ahead and break the front crank bolt loose prior to pulling the engine out.
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Old 04-29-2004, 10:41 AM
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It will go well for you if you pull both. Remember to cut a piece of plywood to fit over the AC condensor, it fits in there nicely once you pull the radiator. Keeps accidental damage to a minimum.
Best to drain the trans first. Less weight that way. Not a bad time to replace the trans filter and put in fresh trans fluid.
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Old 04-29-2004, 12:45 PM
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Very good suggestions, replacing those seals. Thanks all for the advice.

Richard

PS. What do I ask for when ordering the injection pump gaskets?
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Old 04-29-2004, 01:12 PM
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Injection pump to block gasket.

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