| Author |  Topic  |
andydeans3
V4 Guru
United Kingdom
2233 Posts |  Posted - 24 Jun 2020 : 17:09:32  
| Derek
When I say "new" I do mean re-conditioned. Bought from a reputable supplier.
I undestand what you mean, about the pin being re-used, and therefore shorter.
I've ordered a couple of pin/spring/plate kits from Skandix, and will have a go at removing the old pin/spring assembly and fitting new ones.
I have now filed the plates a little, and they are sliding a lot better than they were.
I assume that you have to heat the pin, to peen it?
If so, how do you heat the pin, without heating all the surround metal of the caliper. Perhaps that doesn't matter?
Andy
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro |  |
|
Derek
V4 Guru
United Kingdom
2232 Posts | Posted - 25 Jun 2020 : 09:25:25
| | Peening is done cold. Does this pin peen out into a slight countersink or over the sharp edge of the hole? If it doesn't already have one, a very shallow hole drilled into the end of the pin could help with the peening. You need a VERY solid anvil make the peening easier + ball peen hammer, naturally. | |
|
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 27 Jun 2020 : 14:10:31
| Derek.
Interestingly I was up at Stig's place in Aberdeen yesterday.
He has, what look like brand new calipers, and the spring/L plate assembly at the top doesn't bear down at all on the the sliding assembly. ie the spring does nothing. The opposite of my calipers.
As for peening the pin over, I've now got one person telling me to heat the pin until cherry red, before peening, and one telling me to peen the pin cold.
It'll be difficult to heat the pin cherry red, without putting a considerable amount of heat into the surrounding metal, which might not be a good thing.......
Any one else have any thoughts on this process?
I want to get it right!
I need me SAAB to stop when I hit the brakes!!!
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro |
Edited by - andydeans3 on 27 Jun 2020 21:23:39 | |
|
deggsie
V4 Fanatic
United Kingdom
435 Posts | Posted - 27 Jun 2020 : 22:13:15
| quote:
I need me SAAB to stop when I hit the brakes!!!
Where's the fun in that ? A couple of years ago I was coming back from a Drive-it Day meet in Sutherland, down a moderate brae with the freewheel engaged, when the brake master cylinder failed - now that's 'interesting' !
My spare calipers are also new and the springs/L brackets are just firm enough to hold the sliding section, which is probably what they are intended to do under operating conditions too.
BTW Peening is normally a cold work process, which also serves to harden the material surface.
___________________________
Saab - beyond the conventional ! | |
|
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 27 Jun 2020 : 22:54:21
| Deggsie
Oooh nasty brake failure system story...
Did you lose all your brakes, or just half the split brake system?
Brake failure was in my mind as I was swooping (ie Freewheeling) down the north side of the Cairn o' Mounth yesterday, on my way to Stig's
Andy
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro |
Edited by - andydeans3 on 27 Jun 2020 22:56:57 | |
|
deggsie
V4 Fanatic
United Kingdom
435 Posts | Posted - 27 Jun 2020 : 23:39:12
| Andy
Progressively lost all brakes - I realised something was wrong when the pedal slowly went all the way to the floor. Managed to get some braking effort by pumping the pedal and use of the handbrake. Still had about five miles to get home, thankfully it was a Highland Sunday afternoon so not much traffic (and I was wearing broon breeks).
The Cairn o'Mount, or worse still the Lecht, would be a totally different ball-game !
Derek
___________________________
Saab - beyond the conventional ! | |
|
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 28 Jun 2020 : 20:03:11
| Sounds nasty, though I doubt our southern bretheren know what broon breeks are!!ha ha
I always lock the Freewheel, when going down the north side of the Cairn o' Mount, because it's much steeper.
I forgot once, my brakes were quite literally smoking by the time I got down to Clatterin' Brig.
I fitted a set of those 2mm extended rear brake actuators today. (that Malbrad sell. They compensate for worn drums)
What a difference, I can adjust the brakes now, and still have most of the adjuster still protruding from the backplate. With the standard actuators, the adjusters had almost disappeared inside the backplate!
Andy
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro |
Edited by - andydeans3 on 28 Jun 2020 21:06:17 | |
|
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 31 Aug 2020 : 07:43:26
| Update.
I recently dropped the back axle out the car to do a major "clean up", and refurbishment of the back axle, its various components, and the axle tunnel. (Details on UKSAABS "My Cars" section)
Everything is now back together, and I have also fitted the new Skandix spring assembly to the brake caliper, photos below.
I've used locktite on the threads, locked 2 nuts together, and put a ciclip on the end of the bolt. (bolt and nuts are stainless steel).
ie Belts, and 2 pairs of braces, to ensure the nuts don't come undone.
On one assembly I used two flange nuts, on the other the outer nut is a nylok nut. (I don't think that part of the assmebly will get so hot, so as to affect the plastic)
The assembly does clear the inside of the wheel, by the thickness of my middle finger.
In the vice.
On the car.
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro |
Edited by - andydeans3 on 02 Sep 2020 09:40:05 | |
|
Derek
V4 Guru
United Kingdom
2232 Posts | |
andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 31 Aug 2020 : 17:39:09
| Derek
Thanks for the link.
I happened to have an M8 Nylok nut lying around. I'm sure it'll be OK,but Westfield look like a good outfit, so I've noted their website address for future reference.
1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro | |
|
| Topic | |
Front Brake 
