Two problems related to brake hoses, lines/piping, and fittings have been reported for the 1999 Ford Ranger. The most recently reported issues are listed below.
I lost air pressure in air shocks I had installed on the vehicle. Upon inspection, I discovered that the rear brake fluid lines had rubbed a hole in the bladder on the air shocks. The brake line was also damaged, and had worn almost through, with about 75 percent of the thickness gone. I then inspected all rear brake lines, and discovered that both rear brake lines were severely damaged from rubbing on the shock absorbers, and in one spot on the left side of the vehicle where the line passes through a hole in the frame, the line was almost completely cut through. I pulled the affected lines away from the shock absorbers, and secured them with plastic harnesses. I also put a 2 inch long piece of one half inch I. D. Pvc pipe on the line that passed through the frame. I have seen other trucks like mine, and all of the trucks I have seen have this problem. Obviously, if un- repaired, this condition could lead to loss of brake fluid, and brake failure. Also the damage to the shock absorbers was severe, and they need replacement.
Rear right brake line is rubbing agains shock absorber middle part. Also the hydraulic hose is under , it rubs against the leaf spring. This is a potential safety hazard.