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 V4 1968 Front Brake Calliper
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 25 Aug 2017 :  18:10:48 Show Profile Reply with Quote
Good evening All,

Can anyone advise the spanner size for the front brake calliper fixing bolts please.

They are seized solid and I do not want to risk rounding the heads off.

Any thoughts on removal ?

Also, does anyone know the socket size for the front hub castellated nut ?

I removed the hub nut with a large shifter but I will have to torque it up on re-assembly.

Cheers



1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible

melle
V4 Guru

United Kingdom
3830 Posts

Posted - 25 Aug 2017 :  20:30:03 Show Profile Reply with Quote
quote:
Originally posted by James Ranaldi
Can anyone advise the spanner size for the front brake calliper fixing bolts please.
5/8"AF or 16mm if you must.

quote:
Originally posted by James Ranaldi
Any thoughts on removal ?
Swearing usually helps, otherwise try heat and impact.

quote:
Originally posted by James Ranaldi
Also, does anyone know the socket size for the front hub castellated nut ?
From memory: 34 or 36mm is close, but also this one is imperial. Can check tomorrow if that helps.

www.saabv4.com
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 25 Aug 2017 :  22:00:45 Show Profile Reply with Quote
Hi Melle,
Thanks for your reply.

16mm felt a bit loose.
I must have a 5/8th AF socket, I'll try that tomorrow.

32 mm is the largest socket that I have but it is just too small . . . . .If you can confirm the imperial size, that would be very useful.

I don't have any impact tools sadly but, given the state of the nuts/ bolts on the suspension and brake components, I may have to review this situation.

Thanks
Jim

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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Joshinator99
Starting Member

USA
39 Posts

Posted - 25 Aug 2017 :  22:15:29 Show Profile Reply with Quote
quote:
Originally posted by James Ranaldi

32 mm is the largest socket that I have but it is just too small . . . . .If you can confirm the imperial size, that would be very useful.



I believe the castle nut is 1 5/16" imperial size

1972 Sonett III
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 25 Aug 2017 :  23:21:23 Show Profile Reply with Quote
Hi Joshinator99,

Thanks for your input.

The hunt is now on.

Cheers
Jim

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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Joshinator99
Starting Member

USA
39 Posts

Posted - 26 Aug 2017 :  01:00:08 Show Profile Reply with Quote
quote:
Originally posted by James Ranaldi
Hi Joshinator99,

Thanks for your input.

The hunt is now on.

Cheers
Jim

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible



No problem Jim. I ended up buying a whole 3/4" drive socket set just to get that one socket! And then I had to buy 3/4" to 1/2" drive adapter so that I could use my impact on it. Kind of a pain in the butt.

1972 Sonett III
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deggsie
V4 Fanatic

United Kingdom
431 Posts

Posted - 26 Aug 2017 :  08:05:17 Show Profile Reply with Quote
Jim
Body fixings are always Imperial and Engine fixings are Metric.
I remember buying a couple of 1/2" sockets for my 96 a few years ago (inc. hub nuts); they were sold individually on eBay - can't now remember the seller, but good service.
Good to know work is progressing !
Derek

Edit - PS Have just had a quick look, the seller was Midlands Tool Supplies (mids-tools).

___________________________
Saab - beyond the conventional !

Edited by - deggsie on 26 Aug 2017 08:12:53
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 26 Aug 2017 :  09:13:51 Show Profile Reply with Quote
Great stuff Deggsie.

Looks like The blowtorch will be required !

Thanks for the information.

Research later, out to the garage now.

Cheers
Jim

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 26 Aug 2017 :  13:21:16 Show Profile Reply with Quote
Jamesie

Sounds like progress is being made. Methinks it's time for me to swan up to Aiberdeen for a visit.

Andy

1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 26 Aug 2017 :  14:45:56 Show Profile Reply with Quote
Hi Andy.

Visit any time you wish. Always good to see you and your lovely car.

I am still working part time ( Tuesday, Wednesday, Friday) but I am speaking to the Escape Committee.


Just stopped for coffee . Three of the bolts were a nightmare and the fourth is impossible. . . . . . . . Why is the last one always the worst !

Often best to soak in release oil and re-group.

Cheers

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 26 Aug 2017 :  16:59:52 Show Profile Reply with Quote
Success !

All Caliper bolts are now off Heh Heh !

Heat, release oil, IRWIN Bolt Extractor ( stamped 3/8, 16mm), 800mm lever ( Exhaust Pipe) and numerous permutations of ratchets sorted things out.

Not much room to move in there and SAAB kindly placed the bleed nipples just where the socket wants to go. I suppose this is not a problem if the caliper is being completely removed but I just wanted to loosen them off at this stage as I will be tackling the hydraulics later.

I bought new calipers from Brakes International in Rochdale for my 99 so I will probably go back to them for new Calipers for my 96.

Another good day at the office.

Thanks to all for input, comments and encouragement.

Cheers


1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 26 Aug 2017 :  21:03:05 Show Profile Reply with Quote
Well done! You'll have a hard time finding new calipers for a 96 I'm afraid...

www.saabv4.com
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 27 Aug 2017 :  07:58:39 Show Profile Reply with Quote
Hi Melle,

I'll be calling Brakes International tomorrow to see what they can do.

When I said "New" I meant " Refurbished", apologies.

They took back all four of my old 99 Calipers and gave me a set of shiny, functioning one's.

Hopefully they can do something with my 96ers because they are seized solid. They could be the 49 year old originals.

I have never seen Wedge shaped pads with a pivot arrangement before, very interesting.

Cheers



1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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deggsie
V4 Fanatic

United Kingdom
431 Posts

Posted - 27 Aug 2017 :  08:28:10 Show Profile Reply with Quote
'Swinging' calipers - very '60s !
I got the refurb calipers for my 96 from Brakes International about 10 years ago (just after Highgate closed down) - good quality. Let us know if they still do them !
Derek

___________________________
Saab - beyond the conventional !
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Woody
V4 Guru

United Kingdom
2758 Posts

Posted - 27 Aug 2017 :  12:37:57 Show Profile Reply with Quote
Good to see you got them off.
Caliper bolts as Melle says are 5/8" Hex Head with thread of 7/16"NC14. Boltshank length is 15/16" with thread length of 9/16". I had trouble getting replacements even in 1978/9 and my dealer sorted some off the Saab 99 which had to be shortened.

Hub nut as already mentioned is 1 5/16". The socket will be 3/4" drive, and highly recommend a 3/4" T-bar to aid undoing. I took a nut to my local tool stockist and the socket he supplied is marked Bedford Chrome Van SKW24 3/4W & 7/8BS. Have been using it for 45years now.
James said:-
" I removed the hub nut with a large shifter but I will have to torque it up on re-assembly. "
Show us that shifter??

Edited by - Woody on 27 Aug 2017 12:40:32
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James Ranaldi
V4 Guru

United Kingdom
1475 Posts

Posted - 27 Aug 2017 :  19:43:34 Show Profile Reply with Quote
Hi Woody,

I can take a picture of the shifter tomorrow but I will have to Email it to someone as I cannot post images since the Photobucket farce.
I can also show you my 800mm breaker bar ! !


Thanks for the information.

Cheers

1968 V4, LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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