When i brake (which arrive to me never), i hear the brake front disk to mover. After a quick look, i saw that.
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Any special tool well known for its solidity ?
Manov
850 Broken bolt
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manovlov
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850 Broken bolt
Hy Buddies,
When i brake (which arrive to me never), i hear the brake front disk to mover. After a quick look, i saw that.
I have no idea of what "size" i should order a drill and a dowel extractor. Drill ∅ 5 or ∅6 ? And for the dowel extractor ?
Any special tool well known for its solidity ?
Manov
When i brake (which arrive to me never), i hear the brake front disk to mover. After a quick look, i saw that.
I have no idea of what "size" i should order a drill and a dowel extractor. Drill ∅ 5 or ∅6 ? And for the dowel extractor ?
Any special tool well known for its solidity ?
Manov
1995/02 850 GLT 2.5 170 Petrol M56
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volvolugnut
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manovlov,
It looks to me that the headless bolt is the small screw that holds the brake disc on to the hub. It's only purpose seems to be to hold the disc in position until the lug bolts are tight. Many of these screws have been sheared and never replaced. The securely torqued lug bolts keep the disc tight and prevent any movement while braking.
If you still think you have disc movement while braking, check that your lug bolts are properly torqued.
Also, go for a brisk drive and use the brakes to polish the rust from the discs.
volvolugnut
It looks to me that the headless bolt is the small screw that holds the brake disc on to the hub. It's only purpose seems to be to hold the disc in position until the lug bolts are tight. Many of these screws have been sheared and never replaced. The securely torqued lug bolts keep the disc tight and prevent any movement while braking.
If you still think you have disc movement while braking, check that your lug bolts are properly torqued.
Also, go for a brisk drive and use the brakes to polish the rust from the discs.
volvolugnut
Last edited by volvolugnut on 21 Aug 2022, 06:31, edited 1 time in total.
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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volvolugnut
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See my added note above.
volvolugnut
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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scot850
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If you really want to use the bolt, if I recall correctly there is a 2nd hole opposite that one. Also, when you remove the disc from the hub, often the bolt is long enough if you use locking pliers you can turn the remaining bolt out from the rear of the bearing assembly.
It is a 10mm headed bolt with I think an M6 thread.
Neil.
It is a 10mm headed bolt with I think an M6 thread.
Neil.
2006 V70 2.5T AWD Polestar tune
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2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
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foggydogg
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They call it a guide pin or brake disc centering screw. It is what keeps us from putting on our 850 wheels unless we find the cast hole in the back of the wheel with the void space. Some folks throw the pin away and just put in a regular bolt, as Neil suggests.
https://www.skandix.de/en/spare-parts/b ... w/1013799/
Some folks just throw it away.
Ce n'est pas grave.
https://www.skandix.de/en/spare-parts/b ... w/1013799/
Some folks just throw it away.
Ce n'est pas grave.
69 1800s, @500k Death by Rust
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94 850 Turbo, T-boned, ambulance for me, crusher for it
97 855 T5, 855 R projects
98 V70R x2, Silver Junkyard rescue, Coral Red
98 V70GLT x2, parts cars
00 V70xc x2, both now dead
62 122s, gone to live in Richmond
56 445 Duett basket project
1950 Studebaker 2R10 flatbed, T9 crashbox
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manovlov
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foggydogg,
you may be right, but each time i brake, i can hear a little small shock noise. I will disassemble each brake system on each wheel to find the issue. Anyway, my dea is to install a bolt to replace the broken pin.
Thanks for your post.
Manov
you may be right, but each time i brake, i can hear a little small shock noise. I will disassemble each brake system on each wheel to find the issue. Anyway, my dea is to install a bolt to replace the broken pin.
Thanks for your post.
Manov
1995/02 850 GLT 2.5 170 Petrol M56
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abscate
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A bolt head may interfere with the wheel laying flat on the rotor, depending on which wheel you have installed.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
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