Michele Posted June 21, 2007 Share Posted June 21, 2007 Hello, anybody with a bigger/better drawing than this? I need to rebuild my OE drum brake and want to be sure I still have all the little bits... TIA! Quote Link to comment Share on other sites More sharing options...
sgnas Posted June 21, 2007 Share Posted June 21, 2007 Apart from the bolts holding the backplate to the 'box and the countersunk head screws holding the drum on, the picture is complete. Quote Link to comment Share on other sites More sharing options...
Michele Posted June 21, 2007 Author Share Posted June 21, 2007 Good to know. Ta! Quote Link to comment Share on other sites More sharing options...
Les Henson Posted June 21, 2007 Share Posted June 21, 2007 If you take the expander unit apart Michele, or it falls apart of it's own accord - it has to go back together a certain way so make a note of the position of the two slides that engage on the edges of the shoes. Les. Quote Link to comment Share on other sites More sharing options...
sgnas Posted June 21, 2007 Share Posted June 21, 2007 A new expander is spendy [cough] £50-60 [/cough]. But is easily servicable. As Les says keep a note of what came from where and which way it pointed!. Someone with 25.4cm of mechanical knowledge should be able to put it back together. I lost one of the (2 only) rollers when it came apart unexpectedly. After a trawl around the eng. dept. at work I considered the easiest way to replace it was to cut out a small section from the unthreaded potion of a M8 (possM10) bolt. Still works fine Quote Link to comment Share on other sites More sharing options...
Michele Posted June 21, 2007 Author Share Posted June 21, 2007 Everything fell (exploded?) apart while I was "kindly" pulling it off! So I picked up all the bits from the ground and putted them in a box... I would have liked a better detailed pic 'cos I'm sure some little bast*** went lost... I will make a count and see if I can solve the puzzle... (DUH) (OUFF) Quote Link to comment Share on other sites More sharing options...
sgnas Posted June 21, 2007 Share Posted June 21, 2007 I cannot remember how the rod attaches to the main piston but besides that you should have Cast body Main piston and rod 2 opposed pistons with the brake pad groove 2 rollers The main piston has a slope machined into it. This can, pretty much, only go back in one position. The two rollers go in, one each side. But easier to do one side at a time The tricky bit is which way the remaining pistons go in as they have a slope on them too. But there is only two ways they fit so you can only be wrong once. Assemble it, pull the rod, it it expands all is ok, else assemble it the other way. Once your happy with the assembly and it's greased up ready to go back in put an elastic band around it to stop it coming to pieces before you need it in the rebuild. Quote Link to comment Share on other sites More sharing options...
Michele Posted June 21, 2007 Author Share Posted June 21, 2007 Thanks mate, I will take a pic of the mess and give it a try during the wekend, will post result next week Quote Link to comment Share on other sites More sharing options...
Les Henson Posted June 21, 2007 Share Posted June 21, 2007 You can assemble the entire system on the backplate on the bench which is a damned-sight easier. Then just bolt the brake assembly to the transfer box and connect the brake linkage up. Les. Quote Link to comment Share on other sites More sharing options...
western Posted June 21, 2007 Share Posted June 21, 2007 Thanks mate,I will take a pic of the mess and give it a try during the wekend, will post result next week Have a look here photo's I took while stripping off the drum brake to fit my X-brake Quote Link to comment Share on other sites More sharing options...
Michele Posted June 22, 2007 Author Share Posted June 22, 2007 You can assemble the entire system on the backplate on the bench (...)Then just bolt the brake assembly to the transfer That's the plan Thanks Sgnas,Les and Ralph,oh just checked out your thread,pics will be useful,I saved the whole page so I can rebuild the drum brake while confortably sitting in front of the pc Quote Link to comment Share on other sites More sharing options...
Michele Posted June 29, 2007 Author Share Posted June 29, 2007 Update Well it wasn't that hard! Yet to put it back in place under the 90 but it's assembled now. Notepad: -mine (1997) is different from the one pictured in the drawing. I found the right one in the repair manual,mine has just a cable lever which expands the shoes. -rebuild is quite straightforward but the pin (N° 1 in the illustration) which holds it is a bit** to lock with its C clip (N°3). Sorry I can't post the image at the mo. Now, there's the pin, a flat washer, 2 curved "springy" washers and the "C" clip. Where do the 2 curve washers go? 1)Pin > flat washer > curved washer > cable lever > brake shoe > curved washer > "C" clip or 2)Pin > flat washer > curved washer > cable lever > > curved washer > brake shoe > "C" clip or 3)Pin > flat washer > cable lever > > curved washer > curved washer > brake shoe > "C" clip (tried this but I guess it's not the right way) I hope it makes sense...? I'll leave this evening and will bring the handbrake with me,I'd like to refit it tomorrow so to park the Cube safely again in front of the pub during the weekend Quote Link to comment Share on other sites More sharing options...
western Posted June 29, 2007 Share Posted June 29, 2007 I'll add a parts page for your trans brake in a few minutes, should help with the rebuild order. Quote Link to comment Share on other sites More sharing options...
Michele Posted June 29, 2007 Author Share Posted June 29, 2007 Thanks Ralph, mind I used the page off the workshop manual as reference... Quote Link to comment Share on other sites More sharing options...
western Posted June 29, 2007 Share Posted June 29, 2007 Thanks Ralph,mind I used the page off the workshop manual as reference... Here you go Michele, took a bit longer than expected, hth Quote Link to comment Share on other sites More sharing options...
Michele Posted July 2, 2007 Author Share Posted July 2, 2007 Erm,I think I lost the screw # 11... What's it for? Quote Link to comment Share on other sites More sharing options...
sgnas Posted July 2, 2007 Share Posted July 2, 2007 #11 is 2 off short countersunk head screws. Should be easy to get. They hold the drum on the assembly. The propshaft bolts do a more complete job Quote Link to comment Share on other sites More sharing options...
Michele Posted July 2, 2007 Author Share Posted July 2, 2007 They hold the drum on the assembly Ah,thanks,better to have then BTW I'm quite sure there's only one on mine "off short" = very short? Quote Link to comment Share on other sites More sharing options...
western Posted July 2, 2007 Share Posted July 2, 2007 SA108210L screw drum retaining Quote Link to comment Share on other sites More sharing options...
Michele Posted July 3, 2007 Author Share Posted July 3, 2007 Quote Link to comment Share on other sites More sharing options...
Les Henson Posted July 3, 2007 Share Posted July 3, 2007 You can leave the screw if you can't get one. It just keeps the drum in place while you fit the prop. It does prevent the drum from falling on your bonce though - ask Mark Jenkins - oh how I laughed! Les. Quote Link to comment Share on other sites More sharing options...
Michele Posted July 3, 2007 Author Share Posted July 3, 2007 It does prevent the drum from falling on your bonce though - ask Mark Jenkins I never realized the weight of the drum until the day I pulled it off Quote Link to comment Share on other sites More sharing options...
western Posted July 3, 2007 Share Posted July 3, 2007 Yep, it's a bit heavy Quote Link to comment Share on other sites More sharing options...
Gromit Posted July 10, 2007 Share Posted July 10, 2007 You can leave the screw if you can't get one. It just keeps the drum in place while you fit the prop. Les. Mine had no screws in it when I replaced it, so I got some and put them in. 2 weeks later was taking it off again, and they're a swine to remove, so I left them out. Quote Link to comment Share on other sites More sharing options...
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