Gary 05 AMB DST Posted April 10 Share Posted April 10 Looked for a previous discussion, no luck. In August, 2020, my right rear jack wouldn't stay down. My knee jerk reaction was the jack was leaking, needed rebuilt. Last fall the jack failed again. Now I realize that there is no up and down on the jack itself, it's all controlled by the solenoids. Searching how the jacks work, I realized that maybe the solenoid that controls the lifting or lowering of the jack may be bad. If that solenoid is always open, there wouldn't be any lifting. There is no sign of leakage on the outside. It worked for 3 1/2 years. Any suggestions? I just bought a quart of ACDelco automatic transmission fluid Type III (H) on Amazon. Maybe it has come back to life. Gary 05 AMB DST Link to comment Share on other sites More sharing options...
jacwjames Posted April 10 Share Posted April 10 There is a T handle at the top of the valve block. These are there to release the jacks in case of emergency. Not sure which jack is raising so I'd recommend lowering them all and then one by one unscrew the T handle slowly, the rig will drop so stand back out of the way. Then tighten each one. Sometimes the needle valve gets some contamination in the small office and it allows fluid to bypass. Link to comment Share on other sites More sharing options...
waterskier_1 Posted April 10 Share Posted April 10 What manufacturer hydraulic jack system do you have. - Rick N Link to comment Share on other sites More sharing options...
Gary 05 AMB DST Posted April 10 Author Share Posted April 10 RVA, J11 Gary 05 AMB DST Link to comment Share on other sites More sharing options...
jacwjames Posted April 10 Share Posted April 10 That is the same system I have so my posts are valid. I had one jack that was slowly bleeding down and I opened/closed the T Handle and it solved my problem. Link to comment Share on other sites More sharing options...
Gary 05 AMB DST Posted April 11 Author Share Posted April 11 Thanks Jim, I'll give it a try. Gary 05 AMB DST Link to comment Share on other sites More sharing options...
dennis.mcdonaugh Posted April 12 Share Posted April 12 I had the same issue and Jim’s procedure fixed it. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now