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Old 05-21-2017, 09:47 AM   #1
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HWH 310 leveling system

jacks go down (all4) they contact the ground but they will not lift the motorhome home enough to level. changed front springs did not help. have also checked fluid. any ideas? planned to go to SD in 6 weeks
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Old 05-21-2017, 10:07 AM   #2
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Welcome to iRV2.

Springs are for retracting the levelers only, so that wasn't the issue.
Does the pump stop running ? Or does the pump run and the jacks won't lift ?
If the pump stops, it could be the 50 psi switch; that prevents the system from over pressurizing.
If the pump runs, then good chance it's the pressure return , shuttle valve; not fully seated ; and dumping fluid back to the tank.
Do you have the system manual ?
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Old 05-21-2017, 10:15 AM   #3
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A couple of questions:

- does the pump keep running when the contact the ground?
- does the pump change pitch (sound) when the jacks contact the ground?
- when you stop trying to raise the do they retract?

It could be the shuttle valve or maybe air in the system.
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Old 05-21-2017, 10:42 AM   #4
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Quote:
Originally Posted by SCarroll View Post
jacks go down (all4) they contact the ground but they will not lift the motorhome home enough to level. changed front springs did not help. have also checked fluid. any ideas? planned to go to SD in 6 weeks
See if you can find the answer here: http://www.hwh.com/ml21956.pdf
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Old 05-21-2017, 03:52 PM   #5
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Quote:
Originally Posted by Poppy01 View Post
A couple of questions:

- does the pump keep running when the contact the ground?
- does the pump change pitch (sound) when the jacks contact the ground?
- when you stop trying to raise the do they retract?

It could be the shuttle valve or maybe air in the system.
1. no
2. pump runs but pitch sound changes as jacks touch ground
3. no

will try shuttle valve and air in line thanks
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Old 05-21-2017, 03:57 PM   #6
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Originally Posted by Skip426 View Post
Welcome to iRV2.

Springs are for retracting the levelers only, so that wasn't the issue.
Does the pump stop running ? Or does the pump run and the jacks won't lift ?
If the pump stops, it could be the 50 psi switch; that prevents the system from over pressurizing.
If the pump runs, then good chance it's the pressure return , shuttle valve; not fully seated ; and dumping fluid back to the tank.
Do you have the system manual ?
I do have the manual, going to try to order shuttle valve tomorrow thanks
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Old 05-21-2017, 05:27 PM   #7
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Originally Posted by SCarroll View Post
I do have the manual, going to try to order shuttle valve tomorrow thanks
Sometimes all that it needs is a clean out , might be worth a try.
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Old 05-21-2017, 06:34 PM   #8
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Take good look and touch the motor solenoid. If bad connection. you will know
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