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case 4230 brakes

paul mallon ive got very bad brakes on my 4wd 4230 ,1995
seems like they need bleeding but dont know how?

Re: case 4230 brakes

As I'm not into ag tractors I had a look at the parts drawing to see what you got,you got hydraulic disc brakes that uses the tractor hydraulic oil system to supply the brake reservoir with fluid,ie the reservoir is sealed and kept filled up by the hydraulic oil,there are two master cylinders,one for each side,there is a bleed nipple for each side in the top frame cover,see the drawing,to bleed the brake start the engine,open the nipple for each side in turn and bleed each side,the usual thing that happens with that type brake is the pistons do not return fully in the master cylinders even though the pedals do,when the pedals are pressed again they will go to the floor because there is not a full charge of fluid in front of the pistons,I'v had some success pushing back the pistons with air through the bleed nipples,low pressure only,the only proper way to cure the problem is remove the master cylinders and overhaul them.

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