(800) 853-2651
SHOP NOW

Case IH 385 Brake Problem

R

RNanno

New User
I have a Case IH 385. The right brake pushes to floor. I have changed the master cylinders, checked the steel tube in the drain hose on the reservoir and then changed the 3 o-rings for the brake piston. No fix.
When I go through bleed process and clamp off the reservoir drain hose, fluid runs through bleed valve with no air bubbles. When I push the pedal while bleeding, a surge of fluid comes through. So it seems to have air out and also seems the master cylinder is working since a surge of fluid comes through. However, when I close off the bleed valve the right pedal still goes to the floor.
Any suggestions what to check next?
Thanks.
 
A surge of fluid when no resistance is provided is different than when under pressure. The piston in the master cylinder may be collapsed and bypassing
when asked to make pressure, not volume. Jim
 
Hi, this a test an old IH Mechanic used to perform, remove the hydraulic filler plug from behind the seat, with an air supply pressurize the brake line from the master cylinder to the rear axle and listen at
the filler plug for air, this should be good on your 385 as you have replaced the O-rings, next was to disconnect the brake equalizer pipes and plug the fitting on the master cylinder and bleed and test the
brake.

The other problem is the bushing on the brake pedal shaft when it becomes too worn when you press on the right brake the the actuator rod is pushed at an angle into the master cylinder and the hydraulic fluid
leaks past the master cylinder piston.

See link to PA Farms IH Utilities, IIRC they did a youtube video on replacing the brake shaft bushings.
PA Farms IH Utilities
 
Thanks. I hope that is not it since I put a new master cylinder in. I may cap off the brake line to see if it is in the master cylinder.
 
Try applying the brake with air: take the line off from the master cylinder at the
axle. If it holds air, then the brake piston is ok and the problem is the master
cylinder or the line from it, but the line would show a leak. It is easy to cut the o
rings at the brake piston at the axle, and I would bet that is the problem. Mark.
 
RNanno,

Were you able to find the problem? I have the same tractor with the same issue right now. I replaced the master cylinder and checked the reservoir as well. I didnt do any o rings yet but part of me is thinking this still may not work. Did you just have the issue with one brake or both? I was hoping it was going to be an easy fix, was it a difficult job to do the orings?
 
You must log in or register to reply here.

Similar threads

R
IH 684 Brakes not bleeding
Replies
9
Views
664
crsutton81
crsutton81
P
350 U. Rethinking the 1 way power steering
Replies
3
Views
249
Janicholson
Janicholson
D
Ford 3000 Hydraulic pressure problem
Replies
6
Views
423
TheOldHokie
TheOldHokie
C
MF202 brake problem
Replies
11
Views
449
Caryc
C
H
2555 brakes revisited
Replies
2
Views
278
Harry in Ky
H
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top