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Author Topic: Flavia Coupe Servo Problem  (Read 14616 times)
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SanRemo78
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Posts: 616



« Reply #15 on: 28 March, 2015, 05:21:12 PM »



Thank you Guy, I think I understood it now, there is a rod attached to the vacuum membrane that links to the piston that makes pressure on to the wheels , that must have a small gap (I have a sketch that shows what it should be, I'll look tonight for it), I didn't change mine as I didn't want to change something I wasn't sure how to measure. The rod is adjustable, do you think I should try to shorten it?



I wouldn't shorten it to start with! I'd suggest getting some very thin washers and cutting them open into "C" shapes. The drive the car until the brakes bind. Then apply the handbrake! Slacken off the master cylinder from the servo and insert a pair of washers between the servo and master cylinder and tighten it up again. If that releases the pressure and allows you to drive the car immediately then carry on. If it binds again then insert a second washer. etc etc. If your problem is caused by this issue then you can identify how much you need to shorten the rod by quite easily - it's the thickness of however many washers you need to add. But I wouldn't just fix it with the washers and leave them there, I would shorten the rod and then reassemble!

Guy
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DavidLaver
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« Reply #16 on: 28 March, 2015, 08:39:31 PM »


The servo is remote.

David
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David Laver, Lewisham.
Seara Cardoso
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Posts: 33



« Reply #17 on: 30 March, 2015, 09:40:04 AM »

Yes the servo on the flavia is remote, I've been using the car the last days trying for it to stick on again but with no results. I bled the system again to see if it changed anything but nothing happened.

From what I've seen from online research this is a common problem with remote servos. Most of the time it's the air valve piston that gets stuck, removing the vacuum intake hose would confirm my problem I guess.

If it doesn't stick again I'll do 3 thinks at the same time:

- Replace all the vacuum hoses and clean the non-return valve.
- Adjust the pushrod length as specified by the lancia book.
- Grease the air valve piston and make sure its movement is totally free.

I'll have a 3day 1500km tour on the beginning of May, it will be a good test. If the brakes stick on, if I remove the vacuum hose can I use the brakes safely?

Thank you



* servo.jpg (347.95 KB, 1280x960 - viewed 165 times.)
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1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
fay66
Permanent resident
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Posts: 5836



« Reply #18 on: 30 March, 2015, 11:54:26 PM »

Yes the servo on the flavia is remote, I've been using the car the last days trying for it to stick on again but with no results. I bled the system again to see if it changed anything but nothing happened.

From what I've seen from online research this is a common problem with remote servos. Most of the time it's the air valve piston that gets stuck, removing the vacuum intake hose would confirm my problem I guess.

If it doesn't stick again I'll do 3 thinks at the same time:

- Replace all the vacuum hoses and clean the non-return valve.
- Adjust the pushrod length as specified by the lancia book.
- Grease the air valve piston and make sure its movement is totally free.

I'll have a 3day 1500km tour on the beginning of May, it will be a good test. If the brakes stick on, if I remove the vacuum hose can I use the brakes safely?

Thank you



Just a thought, have you checked to ensure the srvo hose hasn't collapsed internally?
Might be worth changing it anyway.

Brian
8227 Cool
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Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
Seara Cardoso
Member
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Posts: 33



« Reply #19 on: 31 March, 2015, 01:02:34 PM »


Just a thought, have you checked to ensure the srvo hose hasn't collapsed internally?
Might be worth changing it anyway.

Brian
8227 Cool

Hello Brian,

Do you mean the hoses that connect the intake manifold to the servo? I bought some new hoses I'm going to replace soon.
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1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
fay66
Permanent resident
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Posts: 5836



« Reply #20 on: 31 March, 2015, 09:48:01 PM »


Just a thought, have you checked to ensure the srvo hose hasn't collapsed internally?
Might be worth changing it anyway.

Brian
8227 Cool

Hello Brian,

Do you mean the hoses that connect the intake manifold to the servo? I bought some new hoses I'm going to replace soon.

Yes, That's the one.

Brian
8227 Cool
Logged

Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
Seara Cardoso
Member
***
Posts: 33



« Reply #21 on: 02 April, 2015, 08:47:26 AM »


Yes, That's the one.

Brian
8227 Cool

Yes I'll replace them shortly, do you think they can be sticking the servo?

It seems that since I opened the rear circuit to relieve the pressure the brakes did not stick again, and I'm using the car as a daily driver!

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1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
lancialulu
Press Officer
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Posts: 3913



« Reply #22 on: 02 April, 2015, 09:56:23 AM »

I did hear that some Flavia owners had a jam jar and 8mm spanner in the car as insurance!
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
fay66
Permanent resident
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Posts: 5836



« Reply #23 on: 02 April, 2015, 10:02:00 PM »


Yes, That's the one.

Brian
8227 Cool

Yes I'll replace them shortly, do you think they can be sticking the servo?

It seems that since I opened the rear circuit to relieve the pressure the brakes did not stick again, and I'm using the car as a daily driver!

Not sure, just offering up possibilities Roll Eyes

Brian
8227 Cool
Logged

Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
Seara Cardoso
Member
***
Posts: 33



« Reply #24 on: 07 April, 2015, 09:21:17 AM »


Not sure, just offering up possibilities Roll Eyes

Brian
8227 Cool

Not that good looking vacuum hoses, just started replacing them!

I did yesterday 220km in the car, brakes never sticking, although i started to feel the brake pedal with a longer travel, not sure why Huh?


* IMG_7223.JPG (588.45 KB, 1632x1224 - viewed 126 times.)

* IMG_7226.JPG (405.86 KB, 1632x1224 - viewed 128 times.)

* IMG_7227.JPG (640.72 KB, 1632x1224 - viewed 132 times.)
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1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
lancialulu
Press Officer
Permanent resident
*****
Posts: 3913



« Reply #25 on: 07 April, 2015, 10:40:17 AM »

Just a caution on hoses - they need to be specified for vacuum. Heater hoses are not up to the job... Just in case you had been supplied with those....

I could never find the corrugated vacuum hose locally...
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Seara Cardoso
Member
***
Posts: 33



« Reply #26 on: 07 April, 2015, 03:31:27 PM »

Just a caution on hoses - they need to be specified for vacuum. Heater hoses are not up to the job... Just in case you had been supplied with those....

I could never find the corrugated vacuum hose locally...

Thank you, I didn't find the corrugated hoses, although I would to prefer to maintain them for the original look, are they available?

I asked for a hose for the servo of a car and the one they sold to me has written on it something like "high air pressure" (I cannot recall exactly), does it seem appropriate?

Ricardo


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1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
lancialulu
Press Officer
Permanent resident
*****
Posts: 3913



« Reply #27 on: 07 April, 2015, 04:43:01 PM »

If it is low air pressure ie vacuum should be ok. In my experience (limited) hi pressure does not stop a collapse under vacuum. Fit and keep an eye on them....
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
DavidLaver
Permanent resident
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Posts: 4116



« Reply #28 on: 07 April, 2015, 09:28:06 PM »

Ricardo

Any chance of a picture of the car?

David
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David Laver, Lewisham.
Seara Cardoso
Member
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Posts: 33



« Reply #29 on: 07 April, 2015, 10:06:21 PM »

If it is low air pressure ie vacuum should be ok. In my experience (limited) hi pressure does not stop a collapse under vacuum. Fit and keep an eye on them....

Thank you for the advice, I'll confirm if it's high of low pressure, the hose seemed tough and not likely to collapse, but I'll definitely check!

Ricardo

Ricardo

Any chance of a picture of the car?

David

Of course, here are some pictures of yesterday's tour! Douro region, Portugal  Smiley

Ricardo


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* Photo 06-04-15, 15 00 24 (1).jpg (899.96 KB, 4592x3056 - viewed 125 times.)
« Last Edit: 07 April, 2015, 10:19:11 PM by Seara Cardoso » Logged

1956 Aurelia B20GT
1957 Appia Vignale
1963 Fulvia Berlina
1964 Flavia Berlina
1967 Flavia Coupe 1.8 Iniezione
1972 Fulvia 1600 HF
1972 Fulvia Berlina
1974 Beta Berlina 1800
1994 Thema LX
2008 New Delta
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