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My 1976 motorhome lose's brake fluid out of the back resivoir. I went out to start up the ole girl after sitting for a couple month's (last used for deer hunting)and the brake light came on. I checked the fluid in the resivoir and the back chamber was empty. I've check the lines and the rear wheels and any place that I thought it might be leaking and have found nothing. I did replace the rear wheel cylinders last summer due to a leaker. Any help will be appreciated.
Kelley
The large back part of the reservoir is for the front brakes.
Un-bolt the Master cyl from the booster to see if it leaked out the M/C piston into the booster
You don't have to undo the brake lines of the master cylinder to do this.
Dennis https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=1733&.jpg
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