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#1
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Ring gear removal.
According to FSM it's possible heat the ring gear with a torch and get it of the flywheel.
So i heated the ring hear with a torch for a couple of minutes, kept a wet rug on the flywheel and then pounded the flywheel with a rubber hammer while the edges of the ring gear were resting on 4 2x4s. Results are NONE. And it was the best idea i could come up with. What am i missing? |
#2
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Did you evenly heat it?
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#3
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Full disclosure: I don't have experience with doing this on a diesel or a Mercedes.
I have done it on an old Ford. I used an oxycetylene torch, and it fell right off. Turned it over and put it right back on. New teeth, voila! I did not use a heat sink. you definitely want to keep the torch moving. Any discoloration of the metal is affecting the temper. |
#4
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getting the ring gear off is not as easy as installing one. I recall someone telling me they busted the existing (defective) gear off, probably a deep cut with a dremel tool then a whack with a cold chisel Putting it on requires chilling the flywheel and heating the new ring gear then mating them up quickly before the temperatures equalize. I believe you need an oven to heat the ring gear, a torch can't distribute heat evenly and it might warp
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting! |
#5
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i did do it rally evenly and i used a 2 lbs hammer instead of a rubber one this time and i got it, thanks
The old flywheel turned out to be balanced 0 so i put the new one in the freezer for overnight i'll put the ring gear in the oven tomorrow. Thanks a lot, guys. |
#6
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Might try dry ice. That could get the flywheel down close to -100F potentially.
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Current Stable
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#7
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A plain propane torch is fine, heat the ring evenly ( you won't get anywhere near dull red. ) then drop it on. Might have to tap a bit to get the ring to seat. FW can be at room temp.
How hot to make the ring? Well it is one of those " that looks hot enough deals " , 250 F is probably enough. Steel expansion rates are known so we should be able to calculate this. Change in Radius of Thin Circular Ring with Temperature |
#8
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Quote:
Thanks again. |
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