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Hyd Brakes
Jan 30, 2018 11:38:41 GMT 10
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Post by myarrow1 on Jan 30, 2018 11:38:41 GMT 10
Anybody else have dramas trying to replace Hyd Overide Brake backing plates on a mid 70’s Franklin Arrow. Had the RHS let go over the weekend but managed to get home. ( bits everywhere chewed up inside the drum)
Apparently mine is 9” HT Holden and I’m told that I need to get new backing plate brackets welded on to my axle in order to fit new set up... And I thought to do the brakes up was gonna be an easy fix 🙄🙄
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Post by snoops on Jan 30, 2018 12:10:25 GMT 10
That sounds about right, but it isn't a huge job. I'll be doing this to the Viscount shortly as the electric brake kits don't come with a backing plate suitable for axles as old as what we use. Once done, any modern brake setup can be bolted on.
The alternative is to bodgy the backing plates to make them fit by drilling new holes near the old ones, but I'm not a big fan of this idea although I have seen it done.
Do it once, do it well. A good fitter shouldn't take more than an hour to grind the old mounts off and weld on new ones once the brakes are off.
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Hyd Brakes
Jan 30, 2018 13:43:47 GMT 10
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Post by myarrow1 on Jan 30, 2018 13:43:47 GMT 10
Hi Snoops. Yeh I don’t like the idea of doing a ‘dodgy’ with the original backing plate. I’ll cut the u Bolts and slip the axle out and get it sorted. A good mob in Ballarat that I deal with can sort it all out for me..... I was just hoping for a quick change of back plate assemblies.....
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Post by Mustang on Jan 31, 2018 8:56:05 GMT 10
Hi Snoops. Yeh I don’t like the idea of doing a ‘dodgy’ with the original backing plate. I’ll cut the u Bolts and slip the axle out and get it sorted. A good mob in Ballarat that I deal with can sort it all out for me..... I was just hoping for a quick change of back plate assemblies..... Don't forget to use adequate size electrical cable. both in the vehicle & your van. Also run your cable in "parallel" not "series". Parallel: Cut both sides of cable the same length & run the cable down each side of the chassis, separate your earth's. (Parallel prevents voltage drop, or one wheel receiving less voltage.) |
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Hyd Brakes
Jan 31, 2018 13:32:13 GMT 10
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Post by Husky on Jan 31, 2018 13:32:13 GMT 10
I was always taught 6mm twin for electric brakes. Didn't know about wiring them parralell though always run once piece to one wheel then another from wheel to wheel. Separate earth's? What earth's?
Makes sense about the voltage drop though. Learn something new every day. Thanks guys
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Hyd Brakes
Jan 31, 2018 16:26:05 GMT 10
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Post by myarrow1 on Jan 31, 2018 16:26:05 GMT 10
Probably gonna open a Can Of Worms here, but I’m staying with overide hydraulic brake set up....... I tow with a company vehicle and (Triton) so fitting a Brake Controller etc isn’t really an option
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Post by Mustang on Jan 31, 2018 19:48:38 GMT 10
The van hire companies now have a portable electric brake controller, havn,t seen one, apparently they hook up at the hitch.
I had hydraulic brakes on a Kennedy (about a tonne) & you get used to driving to alleviate the jolt that comes with hydraulics.
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Hyd Brakes
Jan 31, 2018 19:57:54 GMT 10
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Post by myarrow1 on Jan 31, 2018 19:57:54 GMT 10
Lol,,,gotta love the hyd jolt 😜😜. Keeps me awake 👍
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Post by Mustang on Feb 1, 2018 6:29:21 GMT 10
Lol,,,gotta love the hyd jolt 😜😜. Keeps me awake 👍 At least you know they are working & simple to work on. |
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Post by planner on Feb 1, 2018 7:31:20 GMT 10
Lol,,,gotta love the hyd jolt 😜😜. Keeps me awake 👍 Greased the piston on the hitch Friday morning before leaving home. The jolt was much more noticeable.  Must have been getting a bit dry. |
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Post by myarrow1 on Feb 1, 2018 8:59:09 GMT 10
That’s the go 😜👍👍👍
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Post by myarrow1 on Apr 15, 2018 9:26:46 GMT 10
These brakes are driving me insane !
All fitted up with new backing plates, drums, the whole bit all assembled where I purchased. Things got abit hot on initial trip ( on flat road). Thought I’d better pull it down to investigate. Bloody glad I did
Both sides had got hot. LHS the seal has popped out of the drum and grease is everywhere inside the backing plate
RHS has worn a groove into the brake lining ( on the inner side of lining.. closest to the backing plate, if that makes sense)
I’m bugerd if I know why. My master cyl 3/4 size is virtually new.
I did notice that there is no real free play on the master cyl rod at all and they aren’t adjustable. I always thought an approx 1/2 inch of free play is the go.... there is still however, a gap between the override arm to brake actuator though.
I can pull the caravan along but as soon as I touch the brake lever, the brakes do come on
Would it be the overide system itself ie - broken spring etc ? Is this likely as it’s still the original
Any ideas as this has got me beat
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Post by Mustang on Apr 15, 2018 20:50:29 GMT 10
A puzzle?? can you post some images of the system?
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Hyd Brakes
Apr 15, 2018 22:08:01 GMT 10
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Post by myarrow1 on Apr 15, 2018 22:08:01 GMT 10
Hi Mustang
I’ll try and send some pics. I haven’t set anything up as I used to use TinyPic for my photos
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Post by 78466noM on Apr 16, 2018 9:58:38 GMT 10
Only thing I could think of the backing plates are a bit too close to drums. I put the 9inch over run brakes on van first then changed my mind and went with the 10inch electric as the wife will be towing it a lot (and she has) there was a difference of about 4mm between the two lucky for me the backing plates were too far away from the 10inch drum but this may be the reason your grease seal has been chewed out having them set back ruffly about the space of the brake adapter plates should be right if mine weren't too far away from the drum I think I would have had the same problem you have now.
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Must have been getting a bit dry.