Hi all! I'm restoring an '87 735i and I can't figure out where this hose should attach. I'm quite familiar with E34's but it doesn't have this hose that comes from the firewall towards the front.
comes from here
to here
Anyone know what's the function/purpose of this hose?
btw, VIN is 1638678
Last edited by cirrusblau; 02-23-2018 at 05:11 AM. Reason: Reuploaded image because of f*cking Photobucket
By VIN it is a 01/1987 E32 735iA EURO version left hand drive.
VIN WBAGB410801638678
Type code GB41
Type 735I (EUR)
E series E32 ()
Series 7
Type LIM
Steering LL
Doors 4
Engine M30
Displacement 3.50
Power 155
Drive HECK
Transmission AUT
Colour LAPISBLAU (173)
Upholstery (0222)
Prod.date 1987-01-16
Vehicle options
S216 HYDRO STEERING-SERVOTRONIC
S365 Rear window safety glass
S415 Sun-blind, rear
S458 Electr. front seat adjustment
S488 Lumbar support, driver and passenger
S500 Headlight wipe/wash/Intensive cleaning
S511 LEUCHTWEITENREGULIERUNG AUTOM / automatic headlight regulation
S534 Automatic air conditioning
S537 Independent ventilation control
S540 Cruise control
S560 Reading light in rear compartment
S690 Cassette holder
L807 NATIONAL VERSION JAPAN
S979 VELOURS-floor mats front and rear
Just a guess, the super old hydraulic headlight aim adjustment control? http://www.realoem.com/bmw/enUS/show...diagId=63_0068
Same system was also used on the old E30 3 series and there also it did not work very well, they are talking about a switch at the knee bolster https://www.bimmerforums.com/forum/s...ustment-System
E30
e30_headlight_adjuster.png
the switch on E28 http://www.mye28.com/viewtopic.php?t=92425
E24 http://bigcoupe.com/phpBB3/viewtopic.php?t=26791
Last edited by shogun; 05-19-2017 at 03:24 AM.
Shogun tricks and tips for the E32 series are HERE!
Thanks for those leads Shogun! I've seen the level adjusters connected to the lower control arms (#3 on the realoem diagram you linked). I haven't figured out yet how they work until I've got this thing running. One thing's for sure, there's no adjuster inside the cabin. As I understand the system automatically adjust the headlight aim depending on the movement of the lower control arm. Also if the system is hydarulic it might attach to the ATF/Pentosin reservoir. I will investigate this.
also read this thread, that car also had the hydraulic headlight aim system, end 1986, he posted some parts pics of the system built year http://www.bimmerboard.com/forums/posts/1080821
Not sure if the E32 had a switch or if that was full hydraulic automatic, have never seen such system in operation.
Shogun tricks and tips for the E32 series are HERE!
Early e28's had a vacuum hose under the dash that passed thru the firewall and attached to the intake manifold. It's purpose was to draw a token amount of cabin air past a temp sensor under the dash to help regulate HVAC temps.
"The US Olympics bobsled team has renamed their sled 'Biden' because nothing has taken America downhill faster"
TheStigg (aka "gale")
92 735i 5-spd, turbo pending
89 535i 5-spd (may she rest in pieces)
94 325ic 5-spd
87 325is
Updating this thread with pics of the hydraulic headlight aiming system.
There's a linkage attached to the lower control arm to detect pitch or dive of the suspension. I guess that thing that the linkage attaches to is some kind of leveller. There two plastic hoses attached to the leveller one goes to the rear and the other goes to the front. There is nothing inside the hoses. It's dry.
I removed the wheel well liner and saw this. Some kind of distribution block. Again empty, dry.
I've actually deleted this feature as I've cut the hose going to the headlight which had some kind of automatic adjuster.
Wow, I never heard of this. What a weird setup. My new vehicle controls headlight pitch also when braking hard or accelerating quick, but its all electronic.
______________________________
1992 750iL
That is a pretty cool and bizarre feature! How do you adjust the headlights manually?
best you could do, that system never worked on the long run, cracked and air came in etc., many E30 drivers converted that system in Germany with the electric aim motors from Ford Fiesta, they need a functioning headlight aim system to pass the bi-annual TUV inspection
http://www.kurth-classics.de/bmw-e30...enregulierung/
here a typical ready to install set with wiring http://www.lwr-shop.de/umrustkit-zur...r-bmw-e30-lwr/
here a DIY for conversion to Ford Fieasta electric system http://wp1016621.server-he.de/fotost/f01214/f01214.htm
Seems to be a good business in Germany to offer these conversion sets to electric aim for many brands, there is even one shop which only sells these conversion kits
LWR Shop = LRW = LeuchtWeitenRegulierung = headlight aim control , Umbaukits für elektrische Leuchtweitenregulierung http://www.lwr-shop.de/
here someone repaired the old system, in the hoses of the system is not hydraulic fluid, it is glycol http://wp1016621.server-he.de/fotost/f01538/f01538.htm
Shogun tricks and tips for the E32 series are HERE!
Similar to E24 too I assume.
Here the version with heater only, there are inside the cabin on the EURO E32 model http://bmwfans.info/parts-catalog/E3...rts_for_heater
3 Temperature sensor passenger room 64111384253
4 Vacuum hose black 11727545323 3,5X1,8
4 Vacuum hose white 64111368684 2X4
and that goes thru the firewall and is connected to the check valve between air intake and vacuum operated brake booster.
In case that hose is not connected to the check valve, then the temperature regulation inside the car (version without aircon) should be very slow respectively not operating correct. The temp sensor is located passenger side LHD behind the cover in legroom
Last edited by shogun; 02-22-2018 at 07:29 AM.
Shogun tricks and tips for the E32 series are HERE!
I've reuploaded the images on my first post. Because photobucket.
Anyway I think it has been established in this thread that this hose is the fuel return line from the pressure regulator.
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