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Vito 112 Cdi front brakes
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 8, 2016, 11:05 AM
Post #26 of 32
(1072 views)
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Re: Vito 112 Cdi front brakes
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Ditto - Bad Master if that was done right now untrusted at best - toss it. Loosening it should make it retract as much as it can and doesn't seem to be able? This would increase pedal travel for feel of any braking if you noticed.
This just isn't common unless recently changed, contaminated or unknown provocation but now worth it as it's brakes,
T
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vitoguy
User
Apr 21, 2016, 2:08 PM
Post #27 of 32
(1023 views)
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Re: Vito 112 Cdi front brakes
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Hello Tom and Hammer, Finally solved it, looked in the master cyl' before considering changing the flexies.....
The smaller of the two piston rubbers therein was softened, swollen and with a split round a quarter of the lip. Changed rubbers from the kit, bled out and all is back to normal.
Can't understand why a damaged piston seal would cause the brakes to seize, you'd think it would be the opposite i.e. a loss of braking force, at least partially??? Maybe one of you two Gems can enlighten me and many thanks again for all your help.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 22, 2016, 2:20 AM
Post #28 of 32
(1016 views)
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Re: Vito 112 Cdi front brakes
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I/we are trying for idea and causes most already mentioned in a two page thread now.
Quote by YOU ">>The smaller of the two piston rubbers therein was softened, swollen and with a split round a quarter of the lip. Changed rubbers from the kit, bled out and all is back to normal.<<"
IDK if wrong products in correct containers or vandalism on purpose but that smacks of an oil introduced to system! Contamination that is! Already was suspect as real brake rubber doesn't swell at all with real brake fluids.
Now what you may ask? If just an oil if not pushed thru but has would have stayed up top of real fluid that's 100% rubber friendly. Now anything it touched long enough can subsequently fail.
IDK if swelling is always going to blow out and leak, not hold pressure or plain plug up as a swollen glob.
Not sure how to tell if you have fixed it to safe long term fix or just bought some time?
Now somewhat lost for long term suggestions as I think problem of another type will be coming or might not? I guess just pay extra attention to any non normal behavior, drive accordingly always anyway but a ghost new issue is possible still sometime only hope not? Can't know with what you just said above,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 22, 2016, 4:39 AM
Post #29 of 32
(1008 views)
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Re: Vito 112 Cdi front brakes
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Yep, sounds like contamination. You really need to flush that whole system thoroughly or it's going to travel to other parts.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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vitoguy
User
Apr 22, 2016, 4:59 AM
Post #30 of 32
(1003 views)
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Re: Vito 112 Cdi front brakes
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The strange thing is that all the other rubbers in the same master cyl' were absolutely springy and as new? Surely 'contamination' would have affected all rubber components immersed in the brake fluid for the same time?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 22, 2016, 5:06 AM
Post #31 of 32
(1003 views)
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Re: Vito 112 Cdi front brakes
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HT - both of us seemed to beat on that possibility way back - you first as by chance it hasn't happened to me but heard of it thru my owner of this whole areas largest "Brake Warehouse" - all brands and problems get caught there overheard suggestions by owner only when oil was just added, vehicle not touched/driven yet.
Oil floats as said but when you use the brakes you just shook it up like oil and vinegar salad dressings for example you shake it first or get only the oil.
Agree with you to flush it out but that can't cure it just stop any progression. Unknown if any minor damage will stay the same or degrade and at what rate?
It's not a comforting thought - contamination damage waiting in however this is proportioned and the anti-lock brake system.
Plain YIKES! It's not even my problem and is NOT making my day but seems that this must be the issue! Tom
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 22, 2016, 5:13 AM
Post #32 of 32
(998 views)
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Re: Vito 112 Cdi front brakes
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vitoguy: Your post posted before mine and new comment now. I can vouch for all rubber components being of the identical type rubber or equal exposure? We also don't know the exact destructive contaminant but have said "OIL" but could have been just something NOT rubber friendly?
Can't know - no crystal ball or an X-Ray to see the unseen of whole system.
Seriously - you (thread does) have my heart beating fast worrying about this as a whole car and what I would do now. Already said to mitigate the problem flush it thru. Can't say to wait for a symptom or drastic to total the car and quit using it up to toss every single component that could have touched that fluid - possibly impossible or prohibitively expensive! No joy in this, Tom
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