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PostPosted: Sun Jun 21, 2020 6:19 pm 
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Joined: Tue Oct 15, 2013 6:28 pm
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
I'm in the process of replacing my front discs, and of course took the mechanical part of the calipers off to clean/grease them up around the pivot pin, to make sure that they move easily.

I didn't touch the hydraulics. Piston that was protruding, looked clean, and after applying some brake fluid, went back easily into the cylinder.
Calipers were new in 2016. (65 000 kms/40 000 miles ago)

Caliper mechanicals working well, moving nicely, UNTIL, I locate the sliding part under the spring loaded plate at the top. ie the normal position when fitted to the car.
Then it gets very tight to move. (ie once back on the car a good sized mallet is required, to move the caliper back and forth).
It's as if the gap under the spring is too small for the "tongue", that slides under there. The spring loaded pin doesn't appear to have any adjustment on it.
Perhaps this is normal?
Should I file the "tongue" down a bit, so that it slip and slides nicely under the spring loaded pin?

Any input appreciated, before I finish the job tomorrow.

ps the discs were seriously corroded on the inside, but not on the outside. The pads look to be evenly worn, both sides.
These discs were fitted in 2016, and have done about 65 000kms/40 000 miles.


Last edited by The Troll on Sun Jun 21, 2020 9:59 pm, edited 1 time in total.

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PostPosted: Sun Jun 21, 2020 9:54 pm 
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Full Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
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Make sure that the spring loaded tab can actually move right back on the pin against the spring load. Sometimes they get in such a state that the tab is effectively locked in position. Shouldn't be any need to file anything.


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PostPosted: Mon Jun 22, 2020 10:22 am 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
99 Pete.
The calipers are not that old, and the plate under the spring is quite free to move, but, once the tongue on the claliper assembly, slides under the spring loaded plate, it's very, very tight.
Perhaps it's supposed to be like that?

Regards

Andy


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PostPosted: Mon Jun 22, 2020 4:26 pm 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
Some photos.
The spring is free to turn, in fact the whole pin/spring assembly is free to turn.
The spring is compressed, but does not "uncompress" so to say.

The pin only seems to be held in place, on the back side, by the pin having been mushroomed over with a hammer, or similar.
Seems a bit agricultural!

Free to swing!
Image[/url

Still free to swing.
Image[/url
OOO getting tight!

Image[/url]

Need a mallet now.
Image[/url]

Mallet time!
Image[/url]

Spring detail.
Image[/url]


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PostPosted: Mon Jun 22, 2020 9:09 pm 
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Full Pressure Turbo

Joined: Fri Jun 16, 2006 9:26 pm
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That does look too tight, spring looks completely coilbound.
When the calipers were overhauled is it possible that the pin was replaced with one too short or the spring replaced with one too long?


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PostPosted: Mon Jun 22, 2020 9:43 pm 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
Pete.
No idea, I bought them in 2016 from a reputable supplier. (not Ebay!!)
Anyway, they don't look right to you?

I just really wanted to know if the plate/spring interface, was supposed to be that tight.
I think you've answered that.

Not much I can do now, except file the plate a bit to match the pin/spring assembly.

Andy
Fife.


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PostPosted: Tue Jun 23, 2020 1:12 pm 
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Joined: Mon May 17, 2004 8:34 am
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Location: West Dorset UK
Car Models: 96TT/900S Cabrio/9-3SW Aero
I had 2 pairs of calipers re-conditioned (sent them away but can't remember to whom/where) so I may have some photos of them before I fitted one set to my 96 and sold the other set. Or, I could take photos of the pair that are fitted to "Erik", if that would help. The sliding bits work properly and the brakes got good readings at the MoT a couple of weeks ago.

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PostPosted: Tue Jun 23, 2020 3:18 pm 
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Light Pressure Turbo
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Location: Muir of Ord, Highland
Car Models: 1972 96 V4, 1987 900 T16 Cabrio (LHD)
Andy
I've just dug out the pair of brand new calipers I've been saving for a rainy day (don't ask).
As Woody says (in another place), it is easily possible to lever up the L-shaped bracket against the spring (see arrow).
Image
The whole assembly swings easily too, it's not loose but just held reasonably firmly under the L-bracket (I can move it by hand, no need for a mallet !).
In your case, it looks as though the pin is too short or spring too long ?

Cheers,
Derek

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PostPosted: Tue Jun 23, 2020 3:54 pm 
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Car Models: 96 V4 & 9-3 Turbo-X
The springs on yours have a whole extra coil on them compared to those new ones in the later photo.

I guess they've been replaced at some point.

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PostPosted: Tue Jun 23, 2020 6:44 pm 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
BeardyDave.
See what you mean.
I've got a handy wee Dremel with a mini cutting disc.
Might and and try and cut a coil off the spring.

Deggsie.
I think you're right, the pins too short, or the spring too long. I suspect the spring is too long.


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PostPosted: Sun Jun 28, 2020 9:53 am 
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Did you fix them Andy..?
You could look at Jim's new recon calipers when your there..

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PostPosted: Mon Jun 29, 2020 8:54 am 
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Joined: Tue Oct 15, 2013 6:28 pm
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
Mike
Aye,
I tried to cut a coil out of the spring with my dremel, that didn't work.
I therefore filed the main plate a little both sides, so that it slides better under the spring loaded L plate.
I have ordered a new spring/plate/pin assembly from Skandix, and will fit them at some point in the future. (19 euros each, 22 euros delivery.)
Perhaps not right away.
Other cars in the fleet need attention, as does the garden!

I was up at Jim's on Friday.
Had a great run up, and over the Cairn o' Mounth.
Great to see him, and progress on his 96.
Helped him get the back axle in.

He has brand new shiny calipers on which the whole spring/L plate assembly is too slack, and doesn't put any pressure on the
sliding plate at all.
My guess is they'll rattle when fitted.
The opposite of my calipers.

How are you getting on?

Andy


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PostPosted: Mon Jun 29, 2020 3:32 pm 
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Full Pressure Turbo
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Joined: Mon Mar 06, 2006 7:46 pm
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Location: Sherwood Forest, England
Car Models: 96 V4 - Grp 2 Rally Car
The new calipers pictured above appear not to have the top hat fitted. The L shaped plate is not even seated properly. The springs are a coil short.
These are likely to rattle when fitted.


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PostPosted: Mon Jun 29, 2020 6:37 pm 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
Woody.
Yep, I just received my new pin/spring/ washer (Top hat) assembly.
Deggsie's assembly certainly seems to be missing the Top Hat washer.

Question Woody.
When you fit these assemblies on to the brake plate, should the pin be cold peened over on the back side, or heated to soften it up, before peening it.
I've had different ideas from different people, some say hot, (Cherry red), some say cold.
I believe "peening" implies cold.

Andy


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PostPosted: Mon Jun 29, 2020 7:05 pm 
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Location: Sherwood Forest, England
Car Models: 96 V4 - Grp 2 Rally Car
Hi Andy, Never replaced these pins, in 50 years of Saabing. Have been monitoring the comments and agree that peening usually refers to cold. Why not ask the suppliers of the kit what they suggest?
Haven't found my spare set of calipers yet.


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PostPosted: Mon Jun 29, 2020 8:51 pm 
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Woody
Thanks mate, I got them from Skandix.
I might ask them.


Regards

Andy


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PostPosted: Tue Jun 30, 2020 7:44 am 
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On the mend Andy.. not 100% yet..

Do you have the part numbers you ordered or email a pic of invoice so I can send for some..
They told me it was nearly 200euro a kit per caliper..

:shock:

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PostPosted: Tue Jun 30, 2020 11:31 am 
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Location: East Fife.
Car Models: SAAB 96/MGB/Classic Twingo/Niss Figaro
Mike
Link is below, but note this is only the top spring/plate assembly, NOT the bottom swivel pin assembly. 18.14 euros each, but about 22 euros postage. So total around 48 euros.
Got them in a few days.
Best laugh was they they put these tiny little items in a HUGE box, instead of a Jiffy bag,.



https://www.skandix.de/en/spare-parts/b ... r/1067791/


1067791


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PostPosted: Tue Jun 30, 2020 11:53 pm 
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The Troll wrote:
18.14 euros each, but about 22 euros postage. So total around 48 euros.

We sell some Skandix parts so if you want to save some postage we can get them to chuck some them in with our next delivery and you just need to pay for UK postage.

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PostPosted: Wed Jul 01, 2020 7:27 am 
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BillJ wrote:
The Troll wrote:
18.14 euros each, but about 22 euros postage. So total around 48 euros.

We sell some Skandix parts so if you want to save some postage we can get them to chuck some them in with our next delivery and you just need to pay for UK postage.


Hi Bill,
So what would you be looking at for the full top and bottom kit for a pair of calipers..?
Thanks

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