Handbrake adjustment - GT6 :: Triumph Torque

Moordale Motors

Welcome, Guest.
Please login or register.
Handbrake adjustment - GT6
Forum Login
Login Name: Create a new account
Password:     Forgot password

Triumph Torque    Cars    Spitfire/GT6  ›  Handbrake adjustment - GT6
Users Browsing Forum
No Members and 13 Guests

Handbrake adjustment - GT6 Print
1 Pages 1 Recommend Thread
markcro
April 8, 2012, 3:39am Report to Moderator

Posts: 383
Posts Per Day: 0.12
Tonight I tackled fitting a new set of rear brake shoes to my GT6 Mk.3. I have never gone near brake drums before so it was a learning experience. After 4am now and I am finished.  

The drums have the automatic handbrake adjuster mechanism. So my question is what postition should the handbrake backplate lever be in when the handbrake is fully off? i.e. should it be all the way against the drum back plate?

I ask this because when I disconnected the handbrake cable clevis the lever sprung all the way as far as it could again the drum back plate. But I found I had to pull the lever back out maybe 2 inches in order to reconnect the cable clevis to it. (And that was with me trying to yank the cable to make it reach. Is this normal? (in that position the handbrake is not grabbing)

And I noticed that the spring that connects the clevis to the back plate is missing. How important is that?


1999 Nissan 200SX
1994 Volvo 940SE
1973 Triumph GT6 Mk.3
Logged
Private Message
markcro
April 8, 2012, 6:40pm Report to Moderator

Posts: 383
Posts Per Day: 0.12
One last question- How easy should the drum's brake cylinder move on the back place and how much movement should their be? I.e. should you be able to move it back and forth with you hand easily?

On mine I can move it a few mm back and forth using effort.

Mine is this setup (Not a photo of mine- way too clean!)


1999 Nissan 200SX
1994 Volvo 940SE
1973 Triumph GT6 Mk.3
Logged
Private Message Reply: 1 - 7
John Bonnett
April 8, 2012, 7:17pm Report to Moderator

Club Member
Posts: 2,603
Posts Per Day: 1.22
The slave cylinder must be able to slide so that shoe at the opposite end from the piston is brought into contact with the brake drum.

You should have a return spring a little bracket on the threaded part of the cable which fits to a bracket on the back plate. The tension of the spring can be altered by moving the bracket along the cable using the locking nuts. These springs help the levers return.

The levers should be back against the backplates and the cables adjusted to suit.

I don't think the self-adjusters work on most cars and generally the way to adjust the brake is with the drum off click up the adjusters with a screwdriver trying the drum after each few clicks. When you can just squeeze it on the adjustment will be correct. The position of the quadrant is important to the efficiency of the handbrake and its optimum position is 15 degrees off a right angle. It is good practice to adjust the brakes on the adjusters not the cable.

John


La Coupe Florio 2015
https://www.youtube.com/watch?v=4-rtCbygnIM
GT6 to Spain
http://www.youtube.com/watch?v=RtFH-Q3n2Gg

Located Whiddon Down Devon
Logged
Private Message Reply: 2 - 7
markcro
April 8, 2012, 7:28pm Report to Moderator

Posts: 383
Posts Per Day: 0.12
Thanks John. I'll go back and have a look at why the cables are so short and don't allow the levers all the way back against the back plates. Is there adjustment on the handbrake itself that may need to be slackened off to free up more cable?

Can you explain this to me as I don't know what you mean by quadrant (thanks! And excuse my lack of knowledge)
"The position of the quadrant is important to the efficiency of the handbrake and its optimum position is 15 degrees off a right angle."

The automatic adjusters were seized solid when I opened the drums. I spent some time cleaning and freeing them up. I will  open the drums again to make the cylinders move more freely.

Thanks for the help.


1999 Nissan 200SX
1994 Volvo 940SE
1973 Triumph GT6 Mk.3
Logged
Private Message Reply: 3 - 7
John Bonnett
April 8, 2012, 7:57pm Report to Moderator

Club Member
Posts: 2,603
Posts Per Day: 1.22
Mark there's no need apologise for lack of knowledge, we all have plenty that we don't know and we can learn from each other. I've recently carried out a restoration on my MK3 so it is all fairly fresh in my mind.

As always the picture you want hasn't been taken but I am attaching a couple which i hope might be helpful. One shows the brake lever spring, partly hidden I'm afraid and the bracket I had to make because the originals had rusted away. The second shows the quadrant. This is bolted to the underside of the body. the hand brake cable connects to it. There is adjustment on the handbrake lever but if it is the same as mine you have to disconnect the clevis, make the adjustment and then refit it.

I'm sure there are others who will add to what I've said and do hope you end up with a good handbrake or at least a reasonable one.

regards

John



This post contains attachments; to download them you must login.



La Coupe Florio 2015
https://www.youtube.com/watch?v=4-rtCbygnIM
GT6 to Spain
http://www.youtube.com/watch?v=RtFH-Q3n2Gg

Located Whiddon Down Devon
Logged
Private Message Reply: 4 - 7
markcro
April 9, 2012, 11:34pm Report to Moderator

Posts: 383
Posts Per Day: 0.12
I appreciate the help John, and I love your spotlessly clean chassis!    Mine has a lovely coating of surface rust and peeling paint everywhere!  
Anyway, your advise made perfect sense to me when I was under the car today. It was of great help.
I found that the two wheel cylinders were seized to the back plate. I freed these up so that they now slide back and forth used my hand. I also found that the automatic adjuster lever is broken off in the passenger side hub. I will get one ordered.
I adjusted the handbrake like to said by screwing out the automatic adjuster wheel and fitting and removing the hub. It worked a treat.
Thanks again!

Mark.


1999 Nissan 200SX
1994 Volvo 940SE
1973 Triumph GT6 Mk.3
Logged
Private Message Reply: 5 - 7
John Bonnett
April 10, 2012, 6:20am Report to Moderator

Club Member
Posts: 2,603
Posts Per Day: 1.22
That's great news Mark.

You could try Mick Dolphin for the lever.

regards

John


La Coupe Florio 2015
https://www.youtube.com/watch?v=4-rtCbygnIM
GT6 to Spain
http://www.youtube.com/watch?v=RtFH-Q3n2Gg

Located Whiddon Down Devon
Logged
Private Message Reply: 6 - 7
markcro
April 13, 2012, 1:41pm Report to Moderator

Posts: 383
Posts Per Day: 0.12
Quoted from John Bonnett
That's great news Mark.

You could try Mick Dolphin for the lever.

regards

John


Thanks John. Mick had one, so it's ordered and will soon be in the post!  

Cheers,

Mark.


1999 Nissan 200SX
1994 Volvo 940SE
1973 Triumph GT6 Mk.3
Logged
Private Message Reply: 7 - 7
1 Pages 1 Recommend Thread
Print

Triumph Torque    Cars    Spitfire/GT6  ›  Handbrake adjustment - GT6

Thread Rating
There is currently no rating for this thread
 


Powered by E-Blah Forum Software 10.3.5 © 2001-2008

Latest Blogs-
Sam Clayton

29th November 2016 5:12pm gmt
New toys
Rob Pearce

27th November 2016 9:36pm gmt
Toby goes home
more blogs...
Next Group Meetings-
South London & West Kent Sunday 4th December 20:00
Cambridge Monday 5th December 20:00
Gatwick Monday 5th December 19:30
Hull & East Riding of Yorkshire Monday 5th December 20:00
Liverpool & Mersey Tuesday 6th December 20:00
North Hampshire Tuesday 6th December 20:00
West Midlands Tuesday 6th December 20:00
Southern Wednesday 7th December 20:00
Cornwall Thursday 8th December 20:30
Swindon Thursday 8th December 20:00
more local groups...
Upcoming Events-
Bedford Car Club Santa Special Rally
11th December 2016
CSMA 12 Car Rally
6th January 2017
Chelmsford MC January Jaunt 12 Car Rally
27th January 2017
CSMA 12 Car Rally
3rd February 2017
MG and Triumph Spares Day
19th February 2017
CMC Tendring Hundred 12 Car Rally
24th February 2017
more events...
For Sale-

Triumph Herald 'S' for sale. A little known member of the Herald family. £4000. Mot'd (no advisories) Good condition with some history. Known to the club. Please phone for further details. Jerry 07794 269020

Dolomite 1850 M Reg,This car has been off the road and garaged since 1999 all original,A good project car it does need some care and attention,plus loads spares Peterbourough area offers 01778 382525

Herald door lock mechanism LHS to chassis no GA50538 - fit this to a RHD car and you can open your passenger door with a key from the outside - £25 including postage
more adverts...
CLUB TRIUMPH the Club for all Triumphs
© Club Triumph Ltd MCMXCVI - MMXV