ACC/ AIR Distribution Drum - SaabCentral Forums
*
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum


Go Back   SaabCentral Forums > Saab NG900, 1994-1998 and OG9-3, 1999-2002 & '03 Convertible (NG=new gen/OG=old gen) > NG900 & OG9-3 Workshop

Notices

NG900 & OG9-3 Workshop NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible Technical Forum

SaabCentral.com is the premier Saab All Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 21st April 2013
kenny62 kenny62 is offline
Junior Member
 
Join Date: Feb 2013                                                
Location: edinburgh
My Saabs: 9-3 SE 2002
Posts: 11
Default ACC/ AIR Distribution Drum

Trying to trouble shoot my ACC, no matter what setting I have it on the middle vent is always pumping out air, if I set it to the footwell the air comes out in footwell but also middle vent.
So middle vent is not getting cut off when it should so I take it there is a flap or something in air distribution box not moving, anyone had similar and know how to fix it?

An update on this
removed glove box and side vent air duct, this allowed me to view the drum which is turning ok, apart for middle section that controls air to centre vent this is not moving at all when drum moves so i take it something is broke
kenny
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 21st April 2013
win_k win_k is offline
Saab Lunatic
 
Join Date: Jul 2010                                                
Location: Tampa, FL USA
My Saabs: 99 S Coupe, 01 SE Vert
Posts: 2,176
Default

The air distribution drum is a fairly complex bit. It's in two pieces with a single gear system to drive both.

On your ACC system, I'd think the stepper motor would be the prime suspect.

It's very common for the dirverter drum to become quite stiff over time, the usual symptom becomes broken knobs or the white spring loaded link. On the ACC system, the motor replaces those two parts but it still has to fight the stiff drum.

On my '99 SE, I found the brass key at the end of the motor was slipping on the motor shaft. The motor would turn, but the slipping key kept the rest of the system stuck in one place.

To remedy, I followed the "screw" trick to ease the drum and after a bit of careful alignment, I filed a flat onto the motor shaft and crimped the brass key onto the shaft. Has worked like a champ for years.
Reply With Quote Quick reply to this message
  #3  
Old 22nd April 2013
kenny62 kenny62 is offline
Junior Member
 
Join Date: Feb 2013                                                
Location: edinburgh
My Saabs: 9-3 SE 2002
Posts: 11
Default

Thanks for info
its the outer parts of drum are moving fine its just the middle section that is the problem as it wont turn when rest of drum is turning but you can move it by hand and its not sticking.
i may strip it down or i might just use the middle vent on/off leaver to control that vent

i will update when i decide

kenny
Reply With Quote Quick reply to this message
 
  #4  
Old 23rd April 2013
kenny62 kenny62 is offline
Junior Member
 
Join Date: Feb 2013                                                
Location: edinburgh
My Saabs: 9-3 SE 2002
Posts: 11
Default

Well that's another problem crossed of list

removed centre console and removed front cover of air distribution box,
the flaps that control the centre vents where binding and there was a lot of wear on drum shaft.

filled corners of flaps a little and they now spin without sticking, had to repair the plastic lever that turns them as it had broke, not the best plastic to glue but managed to reinforce the break by adding bits of plastic.

All back together now and working great, hopefully the repair will last


kenny
Reply With Quote Quick reply to this message
  #5  
Old 8th February 2015
kyroush kyroush is offline
Junior Member
 
Join Date: Jan 2015                                                
Location: Bardstown, KY
My Saabs: 2000 9-5 SE
Posts: 17
Default

Kenny,
if you are still on here.... my drum can be turn easily by hand vie the floor air duck on driverside it just doesn't turn by the stepper motor. The motor is moving the rod fine. So I believe something is broke inside. The arm that you find broke and had to glue sounds like it could be the problem. The center console you talked about, is that where all the gauges are?
Reply With Quote Quick reply to this message
  #6  
Old 20th January 2016
abf111 abf111 is offline
New Member
 
Join Date: Oct 2013                                                
Location: Welland, Ontario, Canada
My Saabs: 96 900 SE 2.0l 95 900 2.5l SE
Posts: 4
Default Air distribution box problems

Well, back to SAAB-land again but with a 2000 9-3 that l bought just before X-Mas/15.........still have my 96 900 SE but top troubles are annoying and not rectified completely.......anywho....in regards to this air distrib box(adb) malady.....
The 9-3 l bought had its air position selector knob already broken. That was fixed by Crazy glueing the piece back in place then a wrap of fine wire then the affected area was 5 minute epoxied----she ah go ah nowhere.
After reading from this site and other SAAB sites and then really getting a grip on this adb situation(screws to push apart the box/warpage/replacement costs, etc), l followed disassembly procedures to the point l could rotate the barrel/drum by hand from either driver's or passenger's side. le. l did not take out the adb but gained access to the drum/barrel with removal of the larger ducting tubes.....mine would rotate easy/no binding as suggested by this "warping" condition of the adb/vents, etc. but occasionally it would hang-up at the extremes, ie. knob all the way down or all the way up positions(feet or defrost).
At this point, going through the entire field of rotation, l liberally spray lubed from either side, any and all moving/sliding parts/area with Castrol Motorcycle Chain lube. This spray penetrates/coats well, does not want to be pushed off, and doesn't react with the plastic.......the smell isn't objectionable( to me but there's no accounting for taste!) and it was gone by the next day............one can use that "toilet paper stick/"loo holder" plastic connecter-thingee to assist in making the drum go through its range of rotation.
Upon manually working the drum to its extremes of travel, when it did hang-up(it felt as if something was catching it/on a edge or protrusion), l basically worked it back and forth in that area for about a half hour. This l repeated at both areas of it "jamming" to the point where l believe it wore away/smoothed-out this interference. To this date(Jan 20/16) it hasn't hung-up or jammed................l'd really like to get an adb in hand to see what is actually causing this jamming but good enough for now.........
l must add that the main reason why l have 3 SAABs( the 96 900, this 00 9-3, and a complete but blown 95 900 with that 2.5l v6 piece of convoluted and highly stressed timing belt malarchy) is because "her ability to take her top off"............neat cars, unique and rare around here(Niagara Falls, Ont), turbo quickness and "fun" but not too impressed with the bs one has to deal with: parts, service, that Tech2 situation, and as far as l have delved into these machines, how they are put together. You know, this "snap-tite model" construction. What kills me is how much these SAABs were brand new! Like, 35-45k!
My 9-3's stereo system(AS1 l believe) is nothing compared to the 900 SE's wrt sound.................say, is there a way to use/install the AM/FM/cassette/single CD radio head unit, that l've seen/l think it's from the AS2 or a 9-5 car in place of my 9-3's AM/FM/single CD radio head? l've read about the marriage/divorce malarchy and about DICE swapping....l'd really like to have that cassette feature in my 9-3..........
Anywho, l hope what worked for me and the adb is helpful......next worry is that bloody T7/pcv/sludging crapola.............like, how badly did SAAB/GM screw-up things visa vis the 9000 years and even with the T5 years????? Gee-zuss
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Air distribution Steve Pratel C900 Workshop 4 6th April 2013 04:20 PM
Drum roll from lh ft wheel crwchf01 C900 Workshop 4 11th July 2011 11:13 AM
Auto transmission direct drum crack Clee-2006-93 9-3 Sedan, Convertible ('04+)/Combi & 9-3X Workshop - ALL Engines 10 28th August 2008 10:44 AM
9-3 Air Distribution Bronco7 NG900 & OG9-3 Workshop 6 28th July 2007 05:17 PM


All times are GMT -4. The time now is 08:10 AM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.

top of page | sitemap | email us



copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
 

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.