no brakes

gregjo1948 · May 29, 2020

Going to try to repair the brakes on a neighbor's 1991 Case/IH 395. Don't have a clue where to start. Does it have hydraulic brakes--if so, does it have a master cylinder that pumps brake fluid or are the brakes mechanical with hydraulic pressure for power assist and using the hydraulic,tranny differential fluid/oil? Any help would be appreciated. gregjo1948

Janicholson · May 29, 2020

Parts diagrams are always important. Jim
This should help radically

wore out · May 29, 2020

(quoted from post at 18:35:53 05/29/20) Going to try to repair the brakes on a neighbor's 1991 Case/IH 395. Don't have a clue where to start. Does it have hydraulic brakes--if so, does it have a master cylinder that pumps brake fluid or are the brakes mechanical with hydraulic pressure for power assist and using the hydraulic,tranny differential fluid/oil? Any help would be appreciated. gregjo1948

According to the diagrams in Jim's link the brake master cylinder has it's own fluid reservoir.

BEFORE you even consider adding fluid, be SURE you know what fluid is factory specified.

It may well use a brake fluid of a completely different type than typical automotive brake fluid, and adding the wrong fluid will make a BIG mess.

That info MAY be printed on the reservoir cap, or hopefully the owner has an Operator's Manual as a reference.

HOPEFULLY the folks at a dealer can tell you, but it wouldn't be the first time someone gave incorrect "off the cuff" info there, either.

ANYHOW, it is VITALLY important that you are SURE you have the correct fluid in your hand BEFORE starting to pour!

caterpillar guy · May 30, 2020

I'm sure that it uses the hydraulic oil from the tractor for the brakes. They are hydraulic with bleeders up under the fuel tank on each side of the rearend. I would start with trying to bleed them. They are a pain to get to. It also takes 2 people if you need to pump them up. If no help then my have to look at if the master cylinders are leaking externally. One pedal just pivots on the shaft the other turns it I believe. So look for a broken pin in there. I also believe there is a cam like adjustment at the pedal on the rod going to the master cylinder to get the pedals to be even when braking. If you change the filter and have lots of black/gray looking material in/on the filter and screen you may need to look deeper to the brake piston and lining. That will require removing the rear axle one at a time or both to replace the parts with lining on them. That is a rather involved job to get into.

pete 23 · May 30, 2020

Called keep fill system. That means the master cylinder uses the hydraulic system fluid that always keeps master cyl full when running.

You don't pump brakes to bleed them. Run a hose from bleeder right back into final drive filler port. Run engine at fairly high rpms and see if that provides flow through bleeder. If not ,yo u may have to pinch off return hose to cooler to get a little back pressure to build up.

They fail for a couple reasons. Leaking brake pistons , plugged screen fillin g master. or failed or stuck equalizer valve at master cyl . They are a different animal as they say. ENGLISH

no brakes

gregjo1948

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Janicholson

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wore out

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caterpillar guy

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pete 23

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