SN 493113A, TB42 LP
Help!
About a year ago I took on a new customer that owns this machine. The prior forklift service had quoted but never fixed an existing low brake pedal problem.
I am a little hazy on all the details at the beginning but I remember that after bleeding the left wheel cylinder (never the right one!) the pedal would be great. This would usually last about a week and then a low pedal again. I discovered the hydraulic tank oil was foaming (machine has a hydraulic brake valve, not a master cylinder). The source was a worn hydraulic pump, cavitating the oil. Replaced the pump, oil was milky from a leaking wiper ring on one lift cylinder, resealed this, new filter and oil, inspected and cleaned the pump suction screen. Worked great about 2 months.
Problem returned. Bled once a month or so a couple of times until a shop repair where I replaced the wheel cylinder. Just trying something. Worked great a couple of months the problem returned. I bled it again today- air only on left side, great pedal again.
These guys are a great customer and I suppose I can swing by once a month and crack the bleeder but I would REALLY like to solve this problem. Any ideas??