logo
أرشيف الإستفسارات الارشيف

:: الملاحظات ::
إضافة رد
المواضيع المتشابهه
الموضوع

 الصورة الرمزية ahmed84_11
ahmed84_11
Bimmer متميز جداً
رقم العضوية: 14612
تاريخ التسجيل: Apr 2010
المشاركات: 204
الدولة: العراق-الأنبار
قوة السمعة: 28
ahmed84_11 is on a distinguished road
07-08-2010, 07:37 PM
  #1
ahmed84_11 غير متواجد حالياً  
افتراضي Center Vent Removal & thumbwheel bulb replacement, e32

:: اعلان ::


Slide the radio all the way out & let it hang by the wires. Click herefor the link for removing the radio.
The top dash grill has 2 phillips screws holding it in place. Press the 4 clips in the corners to slide the center vent assembly out. You can reach the ones on the left easily, the bottom right hand one is tucked behind the OBC but once the left side is tilted out, then pushing the top right clip down will let the whole thing come out easily. Details may be different right-hand drive. The thumbwheel light bulb is BMW part no. 07 50 9 063 579. It is the small wheat lamp style & costs 90 cents.
If only replacing the bulb, it can be removed by just removing the top grill, but it is extremely difficult to get the bulb holder back into the hole. If you have the vent removed for other reasons, install the light before pushing the vent back into place.
If the vertical vanes are loose, use a toothpick to put a small amount of Loctite #242 (medium strength) on the crossbar journal of the middle vane, the one with the integrated thumb lever. It will set up after about a day & be frozen for the first adjustment attempt, but the bond breaks easily & now it will have the right amount of friction to hold the vanes in position with higher fan speed settings.
If the foam has deteriorated, you can get self-stick weather stripping foam at most hardware & home supply stores, get one 3/16" x 3/4" or cut down a wider one, 1/4" thick foam is a tight squeeze when re-installing the vent assembly.
Sometimes the potentiometer traces in the center thumbwheel will get dirty & have a higher resistance. This can sometimes cause less warm/hot air flow thru the center vents in the winter, but is not always the culprit. The center vent will come completely out once the connector is unplugged from the wire harness. It's burried behind a large wire bundle immediately behind the right corner of the instrument cluster. The wire coming from the center vent is about 12" long & the plug can be unplugged by reaching thru the top center grill cavity.

The potentiometer is integrated into the center vent assembly & I could not find a way to remove it from the housing without breaking something, so I sprayed some contact cleaner into the back side & worked the thumbwheel back & forth a few dozen times. The resistance measurements ranged from 2.27 k-ohms to 4.65 k-ohms before spraying & dropped to .218 to .670 k-ohms after cleaning, but once it dried, the resistance jumped right back up to the 2 k-ohm to 3 k-ohm range. New replacements come only as a complete unit from BMW & cost approx. $150.


Results from cleaning the potentiometer provided no difference in the center vent hot air performance.



رد مع اقتباس
moh
Bimmer متميز جداً
رقم العضوية: 10009
تاريخ التسجيل: Jun 2009
المشاركات: 441
قوة السمعة: 54
moh has a spectacular aura aboutmoh has a spectacular aura about
افتراضي رد: Center Vent Removal & thumbwheel bulb replacement, e32
2#
08-08-2010, 07:58 AM
السلام عليكم ورحمة الله وبركاته

اخي هل في طريقة موضحة مثل هذا الموضوع لل 740i E38 بخصوص فك مروحة الطبلون ؟

مشكور على المعلومات موفق بإذن الله ... لك مني أجمل تحية .
moh غير متواجد حالياً  
رد مع اقتباس
الصورة الرمزية ahmed84_11
Bimmer متميز جداً
رقم العضوية: 14612
تاريخ التسجيل: Apr 2010
الدولة: العراق-الأنبار
المشاركات: 204
قوة السمعة: 28
ahmed84_11 is on a distinguished road
افتراضي رد: Center Vent Removal & thumbwheel bulb replacement, e32
3#
06-10-2010, 10:11 AM
والله اخي العزيز حاليا لاتتوفر لدي
لكن ان شاء الله من الاقي شيء عنها راح انقلها لك
ahmed84_11 غير متواجد حالياً  
رد مع اقتباس
إضافة رد

مواقع النشر (المفضلة)

أدوات الموضوع

تعليمات المشاركة
لا تستطيع إضافة مواضيع جديدة
لا تستطيع الرد على المواضيع
لا تستطيع إرفاق ملفات
لا تستطيع تعديل مشاركاتك

BB code is متاحة
كود [IMG] متاحة
كود HTML معطلة
Trackbacks are متاحة
Pingbacks are متاحة
Refbacks are متاحة



الساعة الآن 07:31 AM.



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26