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05-21-2017, 08:47 AM
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#1
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Junior Member
Join Date: May 2017
Posts: 7
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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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05-21-2017, 09:07 AM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,500
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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 ?
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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05-21-2017, 09:15 AM
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#3
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Senior Member
Newmar Owners Club Vintage RV Owners Club Spartan Chassis
Join Date: May 2016
Location: Washington
Posts: 287
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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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JR & Trouble
USAF Ret. Space Jockey
Traveling with Mags and Little Boy Blue
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05-21-2017, 09:42 AM
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#4
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Senior Member
Winnebago Owners Club
Join Date: Jun 2013
Location: Full-timer/volunteer w/SOWERS
Posts: 3,958
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Quote:
Originally Posted by SCarroll
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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See if you can find the answer here: http://www.hwh.com/ml21956.pdf
__________________
Rick & Melissa Young, 2011 Itasca Meridian 40U, Frtliner XCL, Cummins ISL 380HP/DEF, Allison 3000 MH, 2014 Honda CR-V, SMI AF1, Blue Ox, EEZ TPMS, TruCenter steering control
Servants On Wheels Ever Ready. Best job we ever paid to do  . (full time volunteers)
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05-21-2017, 02:52 PM
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#5
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Junior Member
Join Date: May 2017
Posts: 7
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Quote:
Originally Posted by Poppy01
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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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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05-21-2017, 02:57 PM
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#6
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Junior Member
Join Date: May 2017
Posts: 7
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Quote:
Originally Posted by Skip426
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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05-21-2017, 04:27 PM
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#7
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,500
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Quote:
Originally Posted by SCarroll
I do have the manual, going to try to order shuttle valve tomorrow thanks
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Sometimes all that it needs is a clean out , might be worth a try.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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05-21-2017, 05:34 PM
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#8
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Senior Member
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,325
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Take good look and touch the motor solenoid. If bad connection. you will know
__________________
Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100 
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Linear Mode
