central locking 190e f reg

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

cococola - 18 Nov 2005 14:54 GMT

on checking my central locking tubes i find that:on the single pipe going
into a 3way rubber connection in front of the rhf seat,if i disconnect the
pipe nearest to the rhf door and blank it off(3rd along)and pressurise the
single pipe going into the 3 i get no pressure reading.if i do this to the
other pipes i get a reading.i have pressured the t piece to the pump and i
get a reading to the rear of the car but not to the front.this tells me
the rear door pipes are ok.My question is where does the non pressure pipe
go to (it dissapears under the rhf seat)and if i replace this pipe will it
all work again.
thank you

Reply to this Message

Wan-ning Tan - 19 Nov 2005 05:03 GMT

You have not understood the diagram I mentioned. The 3-way connects to
RF door, both doors at left, and back (toward pump). When vacuum or
pressure is applied to tube, whatever the door lock connected on the
other side should lock or unlock. Watching the door locks so you don't
have to lift all carpets to figure out which tube goes where.

You tested right hand side. How about left? There is another multi-way
connector in front of the front seat. Test there too.

The tube is very strong and will outlast the car, unless it is involved
in accident or bad handling. NEVER pull off the tube unless you are
100% sure it is broken. To replace tube, you need to remove front seat
(maybe both) and most carpets.

> on checking my central locking tubes i find that:on the single pipe going
> into a 3way rubber connection in front of the rhf seat,if i disconnect the
[quoted text clipped - 6 lines]
> all work again.
> thank you

Reply to this Message

trader4@optonline.net - 19 Nov 2005 13:56 GMT

"The tube is very strong and will outlast the car, unless it is
involved
in accident or bad handling. NEVER pull off the tube unless you are
100% sure it is broken. To replace tube, you need to remove front seat

(maybe both) and most carpets. "

If this is the same small hard plastic tubing used for vacuum in the
116, it is indeed very tough. However, I just replaced the run in my
300SD that goes from the ignition switch to the engine shutoff on the
injection pump (diesel). For the last year, the car would shut off
fine when ambient temps were warm. Soon as it gets in the 40s it took
longer to shut off. In the 30s, it wouldn't shut off at all.

Given this behavior I figured it most likely was the bellows on the
injection pump shutoff. Upon investigating, as I was tracing the vac
line back to the dash, it broke off in my hand, right where it goes
through the firewall. It made a sharp turn at that point, which
apparently created stress on the plastic, leading it to fail.

If anyone needs a source for this tubing, let me know. I couldn't find
it any parts store, but located a great industrial supply.

Reply to this Message

Hernando Correa - 19 Nov 2005 16:37 GMT

> "The tube is very strong .....
>
> If anyone needs a source for this tubing, let me know. I couldn't find
> it any parts store, but located a great industrial supply.

Please identify the name, location, etc., of the industrial supplier.

Reply to this Message

Wan-ning Tan - 20 Nov 2005 05:01 GMT

Thanks for reminding me. Yes, I believe it is the same tubing used in
the engine bay but the ones in passenger compartment are not subject to
high heat therefore they can outlast the car. The ones in engine
compartment may need renewal after 10-15 years.

There are also some rubber connectors. Their life is shorter than the
plastic.

> "The tube is very strong and will outlast the car, unless it is
> involved
[quoted text clipped - 18 lines]
> If anyone needs a source for this tubing, let me know. I couldn't find
> it any parts store, but located a great industrial supply.

Reply to this Message