RogerH Posted August 28, 2021 Report Share Posted August 28, 2021 Hi Folks, I had a bizarre set of events today in trying to sort my binding brakes. The other day I found that the NSR slave cylinder was stuck solid on the back plate. So when the brakes were applied the trailing shoe was pushed onto the drum but could not come off when the pedal was raised So I spent a good deal of time freeing it up. I found that the groove that held the three locking plates was too narrow - so I opened that up by 0.020 to 0.030" I appeared to work but in fact that was a red herring. So today I investigated deeper. I noticed that there were deep ridges on the back plate pads that the shoes rub against - could this hold the shoes against the drum. I smoothed these down. I noticed at the time with the brake pipe removed from the slave cylinder no fluid dripped out - odd I thought. Brake fluid came out the master cylinder pipe connection very easily (as it should). It also came out of the pipe that went into the restrictor valve - as it should. Have you spotted the stupid mistake. I then decided to attack the restrictor valve In order to do this I removed the carburetors to improve access. In order to remove the valve I had to disconnect all the brake pipes going into the junction and the bolt holding the junction to the chas- a pig of a job grrrrrrr. Sadly this proved to be lacking in innards so was guilty a blind alleyway. I Now put my sensible head on and checked the fluid flow just before the flex hose at the back end. Fluid poured out easily - as it should, But it didn't come out of the slave bleed nipples. Could it be the pesky flex hose. As we all know doubt should fall initially on any flex hose. This hose possibly dates from 1962 - and like a twit I left it till last. Anyway when the flex pipe was off nothing would pass through it. All in all I attacked it in the wrong order but I got there. On Tuesday I shall buy a new flex hose and normal service should resume - please Roger Quote Link to post Share on other sites
Hamish Posted August 28, 2021 Report Share Posted August 28, 2021 Well done Roger you May have taken the scenic route but you arrived safe with a good result. im glad it’s not only me that seems to have to dismantle so much to get to a small gain. H Quote Link to post Share on other sites
BlueTR3A-5EKT Posted August 28, 2021 Report Share Posted August 28, 2021 Will you pop into Mocal/Think Automotive and ask them to make you up a car set? https://www.thinkauto.com/acatalog/On_line_shop_Stainless_Braided_TFE_hose___fittings_94.html Peter W Quote Link to post Share on other sites
RogerH Posted August 29, 2021 Author Report Share Posted August 29, 2021 Hi Pete, I'll get the hose I need from Moss on Tuesday. I am tight for time. I think I replaced the front hoses a couple of years back. I'll check everything in late September and replace accordingly. Roger Quote Link to post Share on other sites
Phil Read Posted August 29, 2021 Report Share Posted August 29, 2021 I had the same problem on both rear sides with my 4A. I noticed the drums getting hot when they shoudn't. I think I found a post on this forum about binding rear brakes due to hose failure, which led me to the rear flexible hoses which were duly replaced. Quote Link to post Share on other sites
RogerH Posted August 29, 2021 Author Report Share Posted August 29, 2021 1 hour ago, Phil Read said: I had the same problem on both rear sides with my 4A. I noticed the drums getting hot when they shoudn't. I think I found a post on this forum about binding rear brakes due to hose failure, which led me to the rear flexible hoses which were duly replaced. Hi Phil, I think the rubber hose is the standard 'go to' for binding brakes. Sadly I did not store this info on my grey cell. It is interesting the number of faults/issues I found during my circuitous investigations. Roger Quote Link to post Share on other sites
BlueTR3A-5EKT Posted August 29, 2021 Report Share Posted August 29, 2021 Which car is this Roger? if TR4 do not forget all 3 flex hoses are as good as the same. IRS cars have different left and right rears as one screws into a 3 way and uses a copper washer to seal. That said if the 3 way has taper seats in all orifices a hose with a cone at both ends with 3/8”unf thread could perhaps be substituted. This is the ARB desert (latterly CAA) we were taught to assume and get out of………. Peter W Quote Link to post Share on other sites
michaelfinnis Posted August 29, 2021 Report Share Posted August 29, 2021 I'm afraid the ARB desert is long gone. In the modern CAA world, we would stay grounded until every required facility was available, along with a risk assessment and method statement. Mike. Quote Link to post Share on other sites
Phil Read Posted August 30, 2021 Report Share Posted August 30, 2021 On 8/29/2021 at 10:34 AM, RogerH said: Hi Phil, I think the rubber hose is the standard 'go to' for binding brakes. Sadly I did not store this info on my grey cell. Roger I know the feeling. Quote Link to post Share on other sites
foster461 Posted September 5, 2021 Report Share Posted September 5, 2021 Sometimes the journey is more fun than the destination. Quote Link to post Share on other sites
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