vwbus.no

My syncro is in permanent 4x4.I have a knob which you can pull in and out but nothing happens.
The person who had the syncro before me has never found out why it is always in permanent 4x4.Any ideas???kan svare på Norsk om dere vil??

Defekte vakumslanger,sjekk fra girkasse til vakumklokke.Antagelig er det akslingen som vakumklokke drar ut og dytter inn som sitter fast.Da må du løsne denne klokka og prøve dra aksling ut og inn.Smør denne akslingen mens du gjør dette.Vet ikke om du forstår noe av dette,kreves nok litt kunnskap å få til dette.

Har du en eller to hendler til å trekke ut?

The Syncro IS a permanent 4x4..! Youre' talking about the rear diff lock now right....?

I dont quite understand your problem.

The vw syncro is supposed to have full time 4x4. The propshaft from the gearbox runns through a visco unit that engages the 4x4 when the rear wheels starts slipping. This visco unit is known to start malfunctioning. It will then eighter engage the 4x4 constantly. The car will then feel verry "stif" and be hard to manouver in parkinglots etc. A broken visco unit can also make the 4x4 not work at all.

I guess the nob youre talking about is the controll for the rear difflock. Some verry few syncros where equipted vith a decoupler that could completly disengage the front wheels from the rear wheels.

Try this to see if your visco is bad/locked up:

-Engage the lowest gear
-drive forvard on a graveled parkinglot without putting your foot in the throttle
- turn the wheel maximum to the left or right. If the car stalls the visco is lightly to bee broken.


Hope you understand my english

Tæff wrote:I dont quite understand your problem.

The vw syncro is supposed to have full time 4x4. The propshaft from the gearbox runns through a visco unit that engages the 4x4 when the rear wheels starts slipping. This visco unit is known to start malfunctioning. It will then eighter engage the 4x4 constantly. The car will then feel verry "stif" and be hard to manouver in parkinglots etc. A broken visco unit can also make the 4x4 not work at all.

I guess the nob youre talking about is the controll for the rear difflock. Some verry few syncros where equipted vith a decoupler that could completly disengage the front wheels from the rear wheels.

Try this to see if your visco is bad/locked up:

-Engage the lowest gear
-drive forvard on a graveled parkinglot without putting your foot in the throttle
- turn the wheel maximum to the left or right. If the car stalls the visco is lightly to bee broken.


Hope you understand my english

Hi there,i have tried going in full circle in the lowest gear and it does not stall,just keeps on going.
I have one knob when i pull out the knob i can hear a sucksion noise like air is escaping???
My syncro has lots of problems as you can tell by all my posts.
I thought that if i pulled the knob out then i would be in only 2wd,how stupid am i

If you hear 'escaping air' it sounds like u gotta vacum pipe off or something...! Like Jarle mentioned above here...The diff lock is controlled by vacuum...The rear diff locks when you pull your dash knob out....and hey...your not stupid..! nobody is stupid here..we are ll learning more about these busses all the time...

vwooosh...!!! wrote:If you hear 'escaping air' it sounds like u gotta vacum pipe off or something...! Like Jarle mentioned above here...The diff lock is controlled by vacuum...The rear diff locks when you pull your dash knob out....

ok next question where to find the vacum pipe??

Crack her up and get her hissing....

vwooosh...!!! wrote:Crack her up and get her hissing....

I can her it hissing without the engine running!do i need to get under the bus to find out the problem??sorry for my ignorance here i am a total novice at this and this is my first bus.

yea you gotta get under there....just trace the hissing and look for the loose or broken pipe...if u can hear it so clearly im sure you will have no problem seeing it....

Jayster.....if you do a Websearch for:

Trouble Shooting the Diff-Lock Actuator Vacuum System
By Dr. Rainer Woitok

You'll find a PDF document explaining HOW to search for errors in the vacuum actuator systems.

The above is the title of this document...

(IF you don't find it, send me a PM.)

Bugman.

Bugman wrote:Jayster.....if you do a Websearch for:

Trouble Shooting the Diff-Lock Actuator Vacuum System
By Dr. Rainer Woitok

You'll find a PDF document explaining HOW to search for errors in the vacuum actuator systems.

The above is the title of this document...

(IF you don't find it, send me a PM.)

Bugman.

Takk for tips!