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The BMW Range
3 Series
E46
Brass Bleeder Screw
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<blockquote data-quote="B33mEr" data-source="post: 672391" data-attributes="member: 13609"><p>I have to clear this misconception ... from what i've read and understand the BMW engineers designed the expansion tank to be the weakest link and <strong>not</strong> the bleeder screw. I have my bleeder screw broken several times not because of the high heat or pressure but because of the excessive twisting force by the mech when screwing back the bleeder screw although the heat and pressure is a contributing factor of the weakening of the bleeder screw.</p><p></p><p>I have twice whereby the top of the bleeder screw sheared off which resulted in me having to buy a new expansion tank since the mech is unable to 'fish out' the remainder of the bleed screw out from the expansion tank.</p><p></p><p>In my opinion yes do get the brass bleeder screw since it is not a determining and crucial factor in our cooling system. It is just there to bleed the air out.</p></blockquote><p></p>
[QUOTE="B33mEr, post: 672391, member: 13609"] I have to clear this misconception ... from what i've read and understand the BMW engineers designed the expansion tank to be the weakest link and [B]not[/B] the bleeder screw. I have my bleeder screw broken several times not because of the high heat or pressure but because of the excessive twisting force by the mech when screwing back the bleeder screw although the heat and pressure is a contributing factor of the weakening of the bleeder screw. I have twice whereby the top of the bleeder screw sheared off which resulted in me having to buy a new expansion tank since the mech is unable to 'fish out' the remainder of the bleed screw out from the expansion tank. In my opinion yes do get the brass bleeder screw since it is not a determining and crucial factor in our cooling system. It is just there to bleed the air out. [/QUOTE]
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