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General E46 Forum
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Old 06-24-2016, 02:11 PM   #1
Justin740
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Join Date: Oct 2009
Location: Columbus, OH
Posts: 20
My Ride: 2002 330i
Secured Oil Pump Nut Install

Im in the process of installing Rally Road's secured oil pump nut and I have some concerns before I bolt the oil pan back up.

When Im torquing the nut (18 ftlbs / 25 nm) the sprocket seems to want to move with it. Also I'm hearing an air-release sound like a balloon being aired out.

1. if the sprocket starts to move with the nut is it torqued enough?

2. do i have to worry about my oil pump because of this air-release sound
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Old 06-25-2016, 08:01 AM   #2
markusmarkus
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Join Date: Jul 2008
Location: USA
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My Ride: 2001 330Ci
The pump shouldn't rotate much as it's chain driven. The chain is connected, isn't it? There's no oil in the pump so it may be expelling air.
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Old 06-25-2016, 09:12 AM   #3
randomdude
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Join Date: Jun 2016
Location: Charleston SC
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My Ride: ZHP, 135, X1
You're just replacing the nut, right? If you removed the whole pump then you need to prime it before reinstalling. The air release sound is probably coming from the pistons. Depending on where the crank is in rotation, you may get a little movement but it should stop as some of the pistons reach top dead center. You really need to make sure you torque that nut to spec
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