Thwaites Alldrive 4000 Hand Brake

Discuss dumpers here

Topic author
Gavy
Posts: 7
Joined: Sun Sep 08, 2019 9:41 am
Real name: Gavin Hastings
Has thanked: 1 time
Been thanked: 1 time
Flag: Wales

Thwaites Alldrive 4000 Hand Brake

Post #1 by Gavy » Mon Sep 16, 2019 11:36 pm

Hi, can anyone tell me how the hand brake works on the front axle of an Alldrive 4000, I have managed to get the hydraulic foot brake working but there are two levers on the side of the axle that operate the hand brake, these move freely and spring return without the cable connected but don't engage the hand brake, I can't find any information on how the brake operates, your help would be much appreciated.


essexpete
Posts: 4059
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 849 times
Been thanked: 680 times

Re: Thwaites Alldrive 4000 Hand Brake

Post #2 by essexpete » Tue Sep 17, 2019 10:20 pm

The tops of the levers move towards each other when the handbrake is applied? I assume you are talking about brakes that are oil immersed and inboard?


Topic author
Gavy
Posts: 7
Joined: Sun Sep 08, 2019 9:41 am
Real name: Gavin Hastings
Has thanked: 1 time
Been thanked: 1 time
Flag: Wales

Re: Thwaites Alldrive 4000 Hand Brake

Post #3 by Gavy » Fri Sep 20, 2019 10:57 pm

Yes, the levers operate and move fully towards each other, unfortunately they don't engage the hand brake, I'm not sure how or what the mechanism is inside the axle. Gavin


essexpete
Posts: 4059
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 849 times
Been thanked: 680 times

Re: Thwaites Alldrive 4000 Hand Brake

Post #4 by essexpete » Sat Sep 21, 2019 1:13 am

Do the foot brakes work properly?


Topic author
Gavy
Posts: 7
Joined: Sun Sep 08, 2019 9:41 am
Real name: Gavin Hastings
Has thanked: 1 time
Been thanked: 1 time
Flag: Wales

Re: Thwaites Alldrive 4000 Hand Brake

Post #5 by Gavy » Wed Sep 25, 2019 2:36 pm

Hi, yes I replaced the brake cylinder and bled the brakes and they work well.


essexpete
Posts: 4059
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 849 times
Been thanked: 680 times

Re: Thwaites Alldrive 4000 Hand Brake

Post #6 by essexpete » Thu Sep 26, 2019 10:39 pm

How about pulling the levers together with something like a min ratchet strap to see if the hand brake levers are doing their job. If you can lock up the brakes then it might be an external linkage issue.


cobbadog
Posts: 475
Joined: Thu May 17, 2018 6:08 am
Real name: John
Location: Coopernook. NSW. Australia
Has thanked: 302 times
Been thanked: 138 times
Flag: Australia

Re: Thwaites Alldrive 4000 Hand Brake

Post #7 by cobbadog » Fri Sep 27, 2019 6:35 am

It might also be the actuating arms inside the drums. See if they are moving the shoes in and out when someone pulls the hand brake on.
Cheers Cobba


essexpete
Posts: 4059
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 849 times
Been thanked: 680 times

Re: Thwaites Alldrive 4000 Hand Brake

Post #8 by essexpete » Fri Sep 27, 2019 8:51 am

I think we are talking about inboard disc brakes here?


Topic author
Gavy
Posts: 7
Joined: Sun Sep 08, 2019 9:41 am
Real name: Gavin Hastings
Has thanked: 1 time
Been thanked: 1 time
Flag: Wales

Re: Thwaites Alldrive 4000 Hand Brake

Post #9 by Gavy » Wed Oct 02, 2019 4:43 pm

I can't see the brakes, that's the problem, they are internal to the axle, does anyone have any experience with this type of brake.


cobbadog
Posts: 475
Joined: Thu May 17, 2018 6:08 am
Real name: John
Location: Coopernook. NSW. Australia
Has thanked: 302 times
Been thanked: 138 times
Flag: Australia

Re: Thwaites Alldrive 4000 Hand Brake

Post #10 by cobbadog » Thu Oct 03, 2019 7:47 am

It certainly sounds as if something is wrong on the inside so it would appear that you will need to start pulling it apart and get into where the brakes are.
The suggestion of chocking the wheels and jacking up one at a time of the front wheels and seeing f either of them lock up is a good idea. Is there any indication of an adjusting bolt/screw to see if it is just out of adjustment?
If you don't have a workshop manual take a lot of photos as you strip it down so you know what belongs where and which way it faces.
Cheers Cobba


Return to “Dumpers”

Who is online

Users browsing this forum: No registered users and 12 guests