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mf 135 jumps out of 2nd

Chuckyz 1966 135 I will be driving along in second gear and all of sudden it just going into neutral. I put the shifter back in second and drive along till it happens again. does anyone have any sage advice for me please?
Chuckyz Firstly, check that the gearlever is engaged in the selector gate. You can see this through the oil filler hole.
The gear problem may be related to the selector rod plungers and springs. Can you confirm that all of the springs are in place? It is very easy to get the gasket caught in the spring coil and lift it out. Sod's Law says that it will end up in the gearbox. If the springs and plungers are all in place you will need to check the plunger points for wear. If they are worn this can allow the gears to 'jump'.

hutch Remove the steering box carefully dont drop anything inside ,you will see depending on the gearbox three or four springs lift the springs out ,you will find the second gear selector spring either broken or weak remove the springs and the selector detent followers they are under the springs pull them out and make sure they are free to move in the hole maybe use a bit of emery cloth and clean them up ,lubricate and refit ,replace all springs and the steering box gasket.
It is possible that the second gear ,sliding gear could be damaged if it has been jumping out for a while ,the gear gets worn on the end and wants to jump out of gear if so the gearbox will need to be removed and the gear replaced
Thats it for now.
Regards
Hutch.



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