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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 08-01-2010, 10:42 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
Specific Question: How do you safely remove the upper radiator hose with u-pins?

Car was running great after an alternator and belt-drive system repair but I figured I should go the extra mile and bleed any air in the cooling system because there was a slight leak at the nipple that I repaired.

I first followed the cn90 bleed method and then the conflictingly different nny528i bleed method ... and in the process, I twisted the bleed screw one too many times.

The bleed screw broke in half.
I tried to extract it (dumb mistake; I should have drilled it out); and that broke the bib around the bleed screw. No big deal, now I need a new hose.

BUT ... here's the situation:
- I'm really (really) tired of breaking things ... I really am. Almost anything PLASTIC has broken on me in this job ... so I'm going to ask a dumb question first ...
- In the morning, I will remove the upper radiator hose.

May I ask ... HOW do you remove that upper radiator hose WITHOUT breaking more things (specifically the thermostat housing and the radiator neck)?

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