Posted by The tractor vet on June 15, 2018 at 08:08:49 from (104.179.81.68):
In Reply to: 706 brakes posted by LOU from Wis. on June 14, 2018 at 19:42:36:
Check the main line coming off the top of the MCV going over to the brake valve at the brake vale first , if you havce no hyd . oil there then your problem is in the flow divider valve in the MCV or a blowen gskt in the MCV. . Now if you had a blowen O/Ring in the brake pistons you would have oil running down the sides of the tractor . If you have a I T manual there is a break down of the MCV in there and BEFORE you start taking things apart read and study the MCV section . You can remove the flow divider vaklve with out taking the MCV off the tractor . IF this valve is stuck and NOT FLOATING in the bore then this is where your problem may lay . Now you may or may not know how to bleed the brakes properly so this is how it isn done , with the engine running open the one bleeder at a time and deprees the brake pedal for that brake and hold and let the fluid run (if you get any , there are time you have to remove the bleeder before you start aand take a drill bit to it down thru the opening and clean out years of rust and dirt build up and make sure that the bleed hole is open all the way . You do not bleed them like a car or pick up . If you have a good flow of oil and still no brakes then your problem lays in the brakes them selfs as i have seen where the disc.s have sheared in half , brake dust build up , cocked pistons , messed up self adjusters , broken and smashed return springs and the list goes on . Had a guy bring me a 966 with about the same problem and his problem was a totally messed up rusted up MCV , that one was fun.
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