Guest Alphonsox Posted December 3, 2016 Share Posted December 3, 2016 My JCB is unwell. It can't be persuaded to move in a forward direction without revving the nuts out of it - and even then it will only creep. Reverse is fine, as is the operation of the back hoe and front loader. (It's an aging 3cx) Anyone got any experience of fixing or maintaining these things ? Any pointers to web sites or forums that could help ? Link to comment Share on other sites More sharing options...
PeterW Posted December 3, 2016 Share Posted December 3, 2016 Depends on vintage but likely to be the main shuttle valve that controls forward / reverse and possibly the detent springs or ball bearings and rods which wear over time. Assuming you have checked the oil (20 ish litres of JCB finest oil) and it's had a filter change - 3 filters around the place IIRC - then that should eliminate a low oil issue. If you drain and refill it don't forget that 20 litres of oil won't fit into a cut off 15 litre drum.... ask me how I know ..!! If you don't have the manual for it, they are available to download on the Classic Machinery forum. Link to comment Share on other sites More sharing options...
joe90 Posted December 3, 2016 Share Posted December 3, 2016 Try this, very helpful bunch that helped me with my JCB problems. http://www.tractorforum.com/f181/jcb-3cx-movement-problems-17257/ Link to comment Share on other sites More sharing options...
Guest Alphonsox Posted December 6, 2016 Share Posted December 6, 2016 Thanks for the replies and the links - Next on my list when the weather clears up a bit. Link to comment Share on other sites More sharing options...
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