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18-11-17, 10:03 PM | #1 | |
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Hydraulic "bomb" pressure unit
Hi all
Need some help/guidance please Disassembled the hydraulic pressure unit on my car only to find there is no O-ring (item 3 in diagram below) Part no. 857612079, does anyone have the spec/size for this, can't find it anywhere on line or one for sale! Many thanks Geoff
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1985 WR quattro 2010 A6 3.0Tdi Allroad 2010 A3 1.4 tfsi Sport - Sold but still in the family 1984 80 Quattro - Sold many moons ago 1981 Coupe GT - Sold to buy above |
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18-11-17, 10:43 PM | #2 |
4 ring whore!
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Judging by the diagram, a new accumulator will come with the o-ring
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1991 90 quattro 20v sport 1991 90 quattro |
18-11-17, 10:49 PM | #3 |
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Hi Mike.
Accumulator is working fine so don't need to replace. Have been going through all the hydraulics with new copper sealing rings to cure a couple of leaks & noticed lack of O-ring when I came to refit to the regulator
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1985 WR quattro 2010 A6 3.0Tdi Allroad 2010 A3 1.4 tfsi Sport - Sold but still in the family 1984 80 Quattro - Sold many moons ago 1981 Coupe GT - Sold to buy above |
20-11-17, 10:25 PM | #4 |
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Update
After lots of cross-referencing part numbers/suppliers, it would appear this pressure unit is also used on some late 70's & 80's BMWs, notably 6 series.
Research into these cars & parts indicates the o-ring on the brake pressure accumulator is 15.3x2.4mm. Ordered a pack of 2 for the grand sum of £4.06 Will see how they fit & post result for future reference.
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1985 WR quattro 2010 A6 3.0Tdi Allroad 2010 A3 1.4 tfsi Sport - Sold but still in the family 1984 80 Quattro - Sold many moons ago 1981 Coupe GT - Sold to buy above |
21-11-17, 06:58 PM | #5 |
4 ring whore!
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Only just seen this must have been , well done finding that tiny part with a cross reference to BMW.
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21-11-17, 07:03 PM | #6 |
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Would be more like it .....
Hours of research, they are on their way, will be happy to post that they fit
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1985 WR quattro 2010 A6 3.0Tdi Allroad 2010 A3 1.4 tfsi Sport - Sold but still in the family 1984 80 Quattro - Sold many moons ago 1981 Coupe GT - Sold to buy above |
21-11-17, 07:06 PM | #7 |
4 ring whore!
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21-11-17, 07:21 PM | #8 |
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21-11-17, 09:29 PM | #9 | |
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Quote:
I actually really enjoy that sort of research. Surprising what else you find out. What else is there to do on these dark nights
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1985 WR quattro 2010 A6 3.0Tdi Allroad 2010 A3 1.4 tfsi Sport - Sold but still in the family 1984 80 Quattro - Sold many moons ago 1981 Coupe GT - Sold to buy above |
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21-11-17, 09:53 PM | #10 |
4 ring whore!
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