Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2006 900 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

'Short Cutting' the replacement of the recirculation vacuum motor. 900

uid 19's pic
posted by  jbowers on  Mon Jun 13 08:41 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Jan 22 13:49 CST 2012
[RELATED]

My '96 960's A/C wasn't working correctly because the recirculation bellows had a leak in it. When on recirculate, any acceleration caused the cold air to stop coming from the dash. I replaced the dual acting bellows on the mixer door last year so I new to look elsewhere first.

I could hear an "air sucking" sound and localized it to the under side of the passenger side foot well.

Crawling under there I could just see the recirculation door and the mountings for the bellows through the plastic grill. (The 960s have the system with the blower mounted in the side rather than under the unit.)

After a few false starts I now have the old unit out and am waiting for a new bellows from the dealer. The dam thing has the same failure as the dual acting one on the mixer door. This unit has to "push" so the vacuum is developed on the actuator side of the diaphragm. The seal around the push-rod is a rubber affair that has to "roll" each time the unit works. DUMB DESIGN!

To get it out, I first pulled the plastic grill and the short duct down off the main housing to get access to the mountings. I cut a rib on both sides away to get better access to the mounting nuts. (10 mm) With the nuts off, the unit's studs and the push rod wouldn't clear the housing because it was so close to the fire wall. I cut the ends off the studs and cut a slot in the housing to clear the push rod. I plan to keep the studs at minimum length when I re-install the bellows. BTW, I searched my "green" Volvo shop manuals looking for a method and couldn’t even find an illustration for how this thing was mounted to say nothing about a recommended method for replacing the dam thing.

Any one been here before and have some hits/tips to offer for when I get the new one?

I'll try to take a couple pictures of the "short-cuts". I'll post them if someone can give me specific directions for posting them. (I know how to get .jpg files on my computer but that's it.)
--
'96 965, 16' wheels, Michelin Pilot Sports, rear 18mm bar + Koni, 204HP cams, 126K. Put 200K on '85 745 TD.






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New 'Short Cutting' the replacement of the recirculation vacuum motor. [900]
posted by  jbowers subscriber  on Mon Jun 13 08:41 CST 2005 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.