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|All Messages in Thread||Author||Date|
|Power Steering/Brake Hydraulic system||Tom||6-3-12|
|1992 Holiday Rambler w/ a 454 on a Chevy chassis.|
System: My power steering pump supplies hyd. fluid to the parking brake on the trany, the brakes and power steering. The psp sends the fluid to a hyd. valve distribution center located under the front wheel well.
Background: When I purchased the unit 2 years ago the owner gave me extra power steering hyd. fluid because he said the hyd. reservoir will foam up and bubble fluid out the overflow hose. He said there was air in the system. It did, so I looked up online how to purge the system of air. It seemed to work the first year.
Event: We just got home from driving on a very hot day(105 degrees). I turned off the RV to make room in the driveway for it. I went to move the RV to the driveway but when I started the RV I heard a loud “clicking” noise coming from the hyd. valve distribution center. I turn the RV off and started it again, the same noise. The noise became about 1/3 as loud when I put it in gear. At first all hyd. systems functioned but 2 days later the parking brake failed and the RV began to slowly roll.
Attempted fix: I took it to a mechanic who: bleed the hyd. system, adjusted the parking brake so it functioned, took apart the hyd. valve distribution center to check for issues, and attempted to remove air from the system. He also replaced the cooling hyd. hoses and the hyd. cooling radiator.
Result: All systems checked out fine. The parking brake functioned but the “clicking” noise remains, emitting from the hyd. valve distribution center. The mechanic stated after contacting the dealer there was still air in the system and he couldn’t get it out because the hyd. lines looped in such a way the air stayed trapped above the fittings where air could be released. He said the “clicking” noise was a hyd. pressure release in the hyd. valve distribution center probably due the air in the system. He said to run the RV and the system would purge itself and not to worry about the “clicking” noise the system would not be harmed.
Today: After a year all hyd. systems function but I still have the “clicking” noise in the hyd. valve distribution center. Is this air in the system? If so, how can I get it out? That “clicking” noises tells me there is going to be a failure sooner or later…..
|Re: Power Steering/Brake Hydraulic system||bill davis||10-6-13|
|There are threaded adjusters on those valves and they may need a slight tweeking.|
also there is a bleed screw on the E-brake actuator.On mine it took a 6 point 1/4' socket to break it loose.Then I hooked up a bleed hose and clear container until clear power steering fluid came out.It took a big bottle of ps fluid to flush it out.The brake lite should go out in 1-2 seconds after you take it out of park and ps fluid builds up pressure in the actuator to defeat the heavy duty spring and release the e- brake cable to the drum
|Re: Power Steering/Brake Hydraulic system||joey brecheen||6-16-15|
|83 midas replaced with rebilt break master cyclinder bleed lines now when i put any load on PS breaks|
engage cant go over 20mph in a curve