Benford 750 brake drum removal

[micksbarratt]

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Hello.

A little while ago I acquired a dumper that has been standing some time. Starting is difficult for me, but more experienced people can start it easily and it runs well.

I’m looking to get it mechanically sound and then will consider what to do with it. At the moment all I know of that needs attention are the brakes, and I can’t get the brake drums off. There is a thread on the drum that suggests a puller is required. I have slackened off the adjuster and the hub spins freely. I’ve tried the usual shock treatment with no success, but have yet to get brutal.

Any help confirming the make/model of the truck and Lister engine, including year of manufacture, and advice on the brake drums will be much appreciated.

[Matchless?58]

I had the same problem with my thwaites dumper . There should be no puller required . What happens is the brake shoes as they expand wear themselves into a groove on the drum . It doesn't matter that you have let off the adjuster they stay stuck in there . The drums also get a build up of corrosion around the bolts . I used plenty of wd 40 and heat around the bolts and around the drum itself . If you gently lever with a thin screwdriver you should be able to get wd 40 in the gap between the drum and brake plate . I am assuming that you are going to replace or refurbish the shoes ? Take your time and keep on heating and oiling it with maybe a bit of gentle tapping around the drum and it should come free . Mine took the best part of a week to free off . Warning here Do not get brutal with it !!! The drums are cast iron and they will smash quite easily . You will be very lucky to get any replacements . On the plus side that looks like a nice straight little dumper .

[micksbarratt]

Thanks Chris, I'll try that.

[micksbarratt]

I had the same problem with my thwaites dumper . There should be no puller required . What happens is the brake shoes as they expand wear themselves into a groove on the drum . It doesn't matter that you have let off the adjuster they stay stuck in there . The drums also get a build up of corrosion around the bolts . I used plenty of wd 40 and heat around the bolts and around the drum itself . If you gently lever with a thin screwdriver you should be able to get wd 40 in the gap between the drum and brake plate . I am assuming that you are going to replace or refurbish the shoes ? Take your time and keep on heating and oiling it with maybe a bit of gentle tapping around the drum and it should come free . Mine took the best part of a week to free off . Warning here Do not get brutal with it !!! The drums are cast iron and they will smash quite easily . You will be very lucky to get any replacements . On the plus side that looks like a nice straight little dumper .

Hi Chris.
I followed your advice and the hubs came off reasonably easily. I'd thought that the hub extended to the centre threaded collar, but obviously it doesn't! It's been a while since I worked on 4 wheeled vehicles (back in the 1970s and 1980s, Cortinas, Escorts, Minis and Reliants for example) as my primary hobby is my motorbikes.
Thanks again!

[Matchless?58]

Motorcycles are also my main passion hence the user name . Glad it worked out well . Cheers Chris

[micksbarratt]

I thought so. I've got several Triumphs of various ages (oldest 1955) together with other bikes including a 750 Commando and a 1961 RE Constellation.

[cobbadog]

I haven't seen that style of brake drum fitting on a taper since 1948-50 on our old Holdens. In that case they did have a puller to remove the drum as there was no lip or gap to put a screw driver. Glad you got it off, now on with the repair.

[micksbarratt]

I haven't seen that style of brake drum fitting on a taper since 1948-50 on our old Holdens. In that case they did have a puller to remove the drum as there was no lip or gap to put a screw driver. Glad you got it off, now on with the repair.

I haven't seen that style of brake drum fitting on a taper since 1948-50 on our old Holdens. In that case they did have a puller to remove the drum as there was no lip or gap to put a screw driver. Glad you got it off, now on with the repair.

Thanks mate. Shoes have been re-lined and fitted. There was a lot of grease in both drums, so I’ll be keeping an eye on them as the truck is put into use.