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#1
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Eliminate transmission Secondary Pump 1987 300E ?
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#2
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Hello
I have multiple ATF leaks on my 300E transmission, some small some large. The biggest one seems to be coming from the transmission's secondary pump. I heard that the secondary pump has many leak sources and that it became problematic and Mercedes recommended eliminating it. From what I understand the pump parts get removed and there is a "kit" plate, gasket and bolts that are then installed. I did some searching and haven't found anything about this online. Wanted to know if this is a good option. From what I understand the secondary pump is for the when the car might be towed (rear wheels rolling with the engine off. However from what I understand the 300E cannot be towed with the front lifted up as the radiator supports would break. And that the car is to be towed on a flatbed. Any reasons why I would regret removing the secondary pump? Does anyone have the parts numbers identified for this "fix". Thanks! |
#3
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One thing the secondary pump lets you do is tow start the car. I’ve never seen anyone actually do that.
If you lift a W124 by the front wheels, you won’t deform the lower radiator support. What tow service lifts cars by the front bumper or crossmember anymore? Here’s a thread on resealing the secondary pump, in a W124 I think - http://www.peachparts.com/shopforum/tech-help/307440-722-3-transmission-2nd-pump-reseal-question.html Sixto 98 E320s sedan and wagon |
#4
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My 300D's secondary pump (I believe) caused the governor to fail. I ended up gutting the secondary pump's internals and just re-attaching it.
My buddy and I actually used the tow-start mechanism once with his Jeep Wrangler and 300SE. For whatever reason the 300SE would not start so we towed the 300SE up the street and I dropped it into gear and BAM started up. Only time ever we ever used that feature.
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