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Kenny57

New member
Joined
Aug 1, 2021
Posts
1
Location
california
I've been handed down a 2004 Itasca sunrise 36' gas workhorse and this is the first RV I've had with the HWH 310 leveling and slide outs. So here's the deal, right rear jack doesn't extend needs solenoid, left rear jack extends but won't retract unless I unscrew the check valve at the top of the manifold near LR solenoid (which is very hot) and release the pressure. I don't know if this matters but when I extend the rooms LR jack extends also. And does the pump need to run to retract jacks? Because it isn't.
 

donn

Well-known member
Joined
Nov 8, 2009
Posts
4,703
Typically the hydraulics use one hose per. This means pressure up/down is controlled by the solenoid. Based on what your describing it sounds like several solenoids valves are bad. It is entirelly possible just the coils are dead.
 

Isaac-1

Well-known member
Joined
Dec 3, 2016
Posts
4,923
Location
SW Louisiana
I can't help much on this other than to say I have seen a post with these exact same symptoms before either here or over on IRV2
 

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