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Open Roads Forum  >  Tech Issues

 > HWH front right

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tarnold

georgia

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Posted: 01/10/20 03:03pm Link  |  Quote  |  Print  |  Notify Moderator

As subject, jack is slow to none when operating. Just got this unit, 2014 PC with 325 model HWH. THERE WAS a 74”x24” mirror glued to a wall partition until the first time I tried leveling. Frame tweaked and shattered the mirror. I’ve read the manual and watched several YouTube vids before I started and understood they are (supposed)to work in pairs. Now I know to look before fully extended, and found the right front, SOMETIMES ***** down but will not extend. The red light for that jack illuminates right away. When partially cocked(the left is fully vertical) I can tap the jack and it will move down a little. So, bound some where? Weak hydro to that cylinder? Retract works fine, but that is all springs isn’t it. So where to start? Do have a call into HWH but haven’t heard back yet.

* This post was edited 01/10/20 03:50pm by tarnold *

MDKMDK

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Posted: 01/10/20 03:40pm Link  |  Quote  |  Print  |  Notify Moderator

Don't know if this will help. I'm guessing a "2014 PC" is a Phoenix Cruiser, and not a laptop.

https://www.phoenixusarv.com/community/index.php?topic=1107.0


Mike.
2018 (2017 Sprinter Cab Chassis) Navion24V + 2016 JKU (sold @ ????)
2016 Sunstar 26HE, V10, 3V, 6 Speed (sold @ 4600 miles)
2002 Roadtrek C190P (sold @ 315,000kms)

dougrainer

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Posted: 01/10/20 04:25pm Link  |  Quote  |  Print  |  Notify Moderator

325 JUST MEANS THE JACK CONTROL SYSTEM. HWH Jacks can be 2 types. KICK DOWN and STRAIGHT ACTING. Kick Down means they swing DOWN vertical when pressure is supplied and then extend and when retracting, they retract and once clear of the ground, will swing horizontal and fully retract. WHICH type you have will depend on the cause and help you require. Doug

This is the Service manual for a Straight 325 system.

https://www.hwhcorp.com/ml37640.pdf

* This post was edited 01/10/20 04:33pm by dougrainer *

dougrainer

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Posted: 01/10/20 04:42pm Link  |  Quote  |  Print  |  Notify Moderator

The First thing you do, is open up the manual release nut/spring loaded 2 center solenoids on the pump manifold. Those are the front Jack solenoids. You then activate the pump. IF the jacks both go DOWN(extend) then you know the Jack and HYD lines are good and not pinched. Look at the Manual I linked and it will show which solenoid is the RF. Close the solenoids you just opened. SWAP the 2 -2 wire solenoid pigtails connections on those 2 solenoids. IF the RF now extends and the left does NOT, you have a 12 volt power problem from the Main HWH control board, probably a blown RF solenoid fuse. If so, replace that solenoid fuse. BUT if a solenoid fuse is blown, odds are it has a internal short and will blow the fuse again in the future. So, if this fixes the problem and it happens again(blown fuse) replace the solenoid. IF the rf jack does NOT extend when you swap the pigtails, the solenoid is bad. Doug

tarnold

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Posted: 01/10/20 05:35pm Link  |  Quote  |  Print  |  Notify Moderator

Op. Thanks Doug. These swing down 90*. Tornadoes in the forecast so might be a day before I can try your suggestions.

enblethen

Moses Lake, WA

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Posted: 01/10/20 05:48pm Link  |  Quote  |  Print  |  Notify Moderator

Have you cleaned the control rod on the jack?
Make sure it is straight
Make sure the small bearing on top is free to spin.


Bud
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dougrainer

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Posted: 01/11/20 07:24am Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

Have you cleaned the control rod on the jack?
Make sure it is straight
Make sure the small bearing on top is free to spin.


"Make sure the small bearing on top is free to spin". VERY critical for kick down jacks. Since you have kick Down, The ACTUATOR on the jack is bad. Doug

https://www.hwhcorp.com/ml13514.pdf

tarnold

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Posted: 01/12/20 11:43am Link  |  Quote  |  Print  |  Notify Moderator

Op. Thanks again Doug, I’ve printed off both references you pointed to. Finally quit storming so got to crawl under. Sprayed all friction points with PB blaster. Well watcha know, it works now, but don’t know if the spray was just a make me feel good action. Wiggling it didn’t seem to be bound up anywhere. Posts above mention a roller bearing. Hard to see/feel around but didn’t see anything that looked like a bearing. There is a stout rod with circlips on both ends that the unit pivots on. Is that the bearing? Now this part is confusing to me:

LF MOD #12447. RF MOD AP7164
LR. Ap7164. RR. 12447
SPRINGS HAVE 49 COILS.
funny to me the opposite corners model numbers match. What would be the reason for that? So good to go for now, thanks for responses.

dougrainer

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Posted: 01/12/20 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

tarnold wrote:

Op. Thanks again Doug, I’ve printed off both references you pointed to. Finally quit storming so got to crawl under. Sprayed all friction points with PB blaster. Well watcha know, it works now, but don’t know if the spray was just a make me feel good action. Wiggling it didn’t seem to be bound up anywhere. Posts above mention a roller bearing. Hard to see/feel around but didn’t see anything that looked like a bearing. There is a stout rod with circlips on both ends that the unit pivots on. Is that the bearing? Now this part is confusing to me:

LF MOD #12447. RF MOD AP7164
LR. Ap7164. RR. 12447
SPRINGS HAVE 49 COILS.
funny to me the opposite corners model numbers match. What would be the reason for that? So good to go for now, thanks for responses.


Go to the Jack pic and it will state ROLLER BEARING. The Jacks. AP and RAP preceed the actual model number. The other 2 numbers, mean that they are RAP--Replacement numbers. That means those 2 jacks have been replaced at some time. The stout rod is the actuator. One thing, The jacks when retracted, should not be perfectly horizontal or tilt UPWARD. If so, they will not swing down correctly. You will see a Cable connected on both sides of the jack with adjustment nuts. You tighten to bring the retracted jack down slightly below perfect horizontal. Kick Down when adjusted correctly will yilt slightly downward. Doug

enblethen

Moses Lake, WA

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Posted: 01/12/20 01:35pm Link  |  Quote  |  Print  |  Notify Moderator

Drwaing MP65-3035 for roller bearing location.

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