kristian Posted June 11, 2007 Report Share Posted June 11, 2007 I've just bought a gas gas 280 2001 which has a leaky rear hose there seems to be no back brake at all? when i push the rear brake i can see the fluid bubbling out of the rear banjo! but the pads don't move at all? checked the fluid and it is still full. when i bought the bike the guy said it just needed new pads but i knew there was something else wrong with it? there is also a rattle on the engine any common faults with this model? my bro had a look at it and said it could be the water pump but my worst fears are that it's something more. The good news is though i managed to knock Quote Link to comment Share on other sites More sharing options...
kinell Posted June 11, 2007 Report Share Posted June 11, 2007 I've just bought a gas gas 280 2001 which has a leaky rear hose there seems to be no back brake at all? when i push the rear brake i can see the fluid bubbling out of the rear banjo! but the pads don't move at all? checked the fluid and it is still full. when i bought the bike the guy said it just needed new pads but i knew there was something else wrong with it? there is also a rattle on the engine any common faults with this model? my bro had a look at it and said it could be the water pump but my worst fears are that it's something more. The good news is though i managed to knock Quote Link to comment Share on other sites More sharing options...
kristian Posted June 11, 2007 Author Report Share Posted June 11, 2007 sorry should have explained it better is leaking where the pipe is crimped to the banjo! only a slight leak, would this stop pads moving? Quote Link to comment Share on other sites More sharing options...
coxy Posted June 11, 2007 Report Share Posted June 11, 2007 you need a new brake hose am afraid and the rear brake re bleeding as all of the pressure you are putting on the brake is been used to force the fluid out and not to move the pads so definitely a new rear hose, shouldn`t cost a fortune buts a pain of a job, as for the rattle it may be piston moving slightly in the barrel if the rings are warn or anything but i would get someone around you who has good knowledge of trials bikes to see what they think Quote Link to comment Share on other sites More sharing options...
kristian Posted June 12, 2007 Author Report Share Posted June 12, 2007 Cheers coxy for the reply! i was looking at the rear brake hose where it goes through the swinging arm and it looks like a nightmare to change? anyone got any tips Quote Link to comment Share on other sites More sharing options...
bob Posted June 12, 2007 Report Share Posted June 12, 2007 Surely you won't need to change the whole hose?! Unless the hose is only just the correct length as it is and cannot be shortened in any way. Why can't you just butcher the old banjo with a pair of wire cutters, trying not to damage the hose, and then put a new one on. If you haven't got the gear to crimp them then there are definitely bolt-on type banjos available. A mate of mine had this happen to a scorpa front brake, and he just put a fresh banjo on which he had spare from road racing. That shouldn't be such a difficult job. Bleeding is probably the worst bit of it. Bob Quote Link to comment Share on other sites More sharing options...
kristian Posted June 12, 2007 Author Report Share Posted June 12, 2007 cheers bob thats a very good point! will look into that? got to be an easier option than getting a new hose through the swinging arm. Quote Link to comment Share on other sites More sharing options...
kevin j Posted June 12, 2007 Report Share Posted June 12, 2007 Not so bad, Run a fish wire through from the back, hook on the hose and pull it through. Can't push it, as I could not find the small opening near the caliper. As I recall, the hard part is turning (rotating like a speedo drive) the hose so the banjo was laying flat compared to rectangular opening. Bleeding it, another story. Quote Link to comment Share on other sites More sharing options...
kristian Posted June 12, 2007 Author Report Share Posted June 12, 2007 just cut the banjo off (was a split in the pipe just inside banjo) reconnected the banjo bled the rear brake and still bugger all there? have got all the air outbut still nothing happening? theres obviously something else wrong so just gonna take it to my local bike shop and get them to take a look! just hope it's nothing to drastic. Quote Link to comment Share on other sites More sharing options...
mil Posted June 22, 2007 Report Share Posted June 22, 2007 Kristian, I had a similar problem on my rev3- no back brake due to slight leak at banjo. Unfortunately you will need to buy the hose/ banjo assembly or have one made up for you. This is because the Banjo is crimped into the hose with a crimping tool and once on won't re-seal properly if cut off. I tried going to an automotive hydraulic specialist to have them supply and crimp on a banjo onto the original hose- but they didn;t have a small enough bore hose...However I had one custom made up at my local shop and it was Quote Link to comment Share on other sites More sharing options...
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