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Topic: HWH Solenoid valves for room (Read 486 times) previous topic - next topic

HWH Solenoid valves for room

I have been through many of the HWH manuals, but I cannot see exactly what valve/solenoid is what.  My 2002 U270 has only one front room slide, and the HWH hydraulic unit has 4 whatever you want to call the round black "solenoids/valves/cans".  Two of them on on the inside and mounted high on the aluminum block, while two are on the outside and mounted low, just above the motor. 

Can someone tell me *exactly* what valve is what...and what it does?  I believe the ones mounted low and on the inside are the extend valve(s), while the outer ones are the retract valve(s).  The document HWH sent me to test the system shows only a single pair of extend/retract valves, so I am confused as to exactly what the difference is between the two valves that are on the outside. 

Joe Portelli (very busy guy at HWH) says that the test should be performed on hose above the retract valve on the right "if FT hooked it up as they are supposed to", but before I open up the system, I'd really like to know the purpose of each of the 4 valves.  Can anyone tell me...or point me to the right HWH document to review?
The selected media item is not currently available.Brad & Christine Slaughter
Was:  1990 U280 36'
Was:  2002 U270 36' (With a bathroom door) Build #5981
Is:  2021 Leisure Travel Van Wonder 24RL
2015 Jeep JKU, 2003 S10 QC 4x4 or 2017 C-Max
Lake Havasu City, AZ (or Gillette, WY)

Re: HWH Solenoid valves for room

Reply #1 –
Is your slide out the one with the train system which has 2 cylinders at the top and 2 at the bottom? There should be number tags on the lines close to the crimped fasteners on the ends of the hose. I am not sure how hwh wants you to check the cause of the creeping slide
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: HWH Solenoid valves for room

Reply #2 –
I had an issue with my 2001 slide, everything acted correct right up to the point you hit the rocker switch to move the slide, the motor on pump sounded good, but nothing happened.  So called Mike @ MOT, siad the 3,000 psi switch was most likely problem, so we jumped the circuit  and bingo, it took off.  While playing/expermenting with the valves, found it would creep in, not  wanting to punch holes in the slide from the locking pins, so back to normal settings. Most interesting. Did get the new pressure switch, installed, all wonderful again. Do like having a younger employee who can crawl around in that compartment with the limited access, and he enjoys all the bells & whistles in there.

Re: HWH Solenoid valves for room

Reply #3 –
Quote from: red tractor –
Is your slide out the one with the train system which has 2 cylinders at the top and 2 at the bottom? There should be number tags on the lines close to the crimped fasteners on the ends of the hose. I am not sure how hwh wants you to check the cause of the creeping slide
Yes....4 cylinders.  The test is pretty straight-forward.  You extend the slide (on the Train 2002 setup) and then insert a valve in the line to shut it off, and then attach a gauge to the manifold (I posted the document a week or so ago).  Then you see how it behacves.  If pressure bleeds thru, it means one thing.  If not, it means something else.  My confusion is with the two other solenoids.  In re-reading all the greek drawings again, I think they are for the locking pins.  Just want to be positive now.
The selected media item is not currently available.Brad & Christine Slaughter
Was:  1990 U280 36'
Was:  2002 U270 36' (With a bathroom door) Build #5981
Is:  2021 Leisure Travel Van Wonder 24RL
2015 Jeep JKU, 2003 S10 QC 4x4 or 2017 C-Max
Lake Havasu City, AZ (or Gillette, WY)

Re: HWH Solenoid valves for room

Reply #4 –
Brad,

One of the basement solenoids (the longer, skinny one with hoses attached on the ends and near the ends) is a synchronizing solenoid - to make the four upstairs ones work evenly. Sorry that's all I'm sure about.
Jim Frerichs
2002 U320 42'

Re: HWH Solenoid valves for room

Reply #5 –
Quote from: Jim Frerichs –
Brad,

One of the basement solenoids (the longer, skinny one with hoses attached on the ends and near the ends) is a synchronizing solenoid - to make the four upstairs ones work evenly. Sorry that's all I'm sure about.

The things I am concerned about identifying are the 4 small cylinders atop the motor and affixed to the aluminum block.  The ones that have to be backed out "no more than 4-1/2 turns" for opening them.  I have seen them referred to as valves, solenoids, or solenoid valves on various documents.  There is only a single extend "valve" and a single retract valve pictured in the isolation kit procedure.  My coach has two valves on each side.  I spent another hour with my documentation and I *think* that the valves on the left (one retract and one extend) are actually for the locking pins, while the ones on the right are the retract and extend for the room itself.  I know there is a synchonizing cylinder somewhere, but I won't need to find it to do this particular test. 

Here is the bottom line of the testing, once the valve and gauge are in place between the hose and the extend valve:

 "If the pressure gauge shows an increase in pressure (500+ psi) the cylinder extend valve is leaking."

If it doesn't increase, then:

"If the room creeps ("A" style out or "B" style in), the leak is in a room cylinder."

I am hoping for an increase in pressure.  Has to be simpler to fix if there is only one extend valve.  RnR replaced a valve, but HWH said it was possible that either the new valve was bad OR they replaced the wrong valve.  If that isn't it, then I'll get to learn about how to identify which of the 4 cylinders...but since the lower, rear is what creeps in, that would seem the likely culprit.  With HWH's help, we'll get it resolved.
The selected media item is not currently available.Brad & Christine Slaughter
Was:  1990 U280 36'
Was:  2002 U270 36' (With a bathroom door) Build #5981
Is:  2021 Leisure Travel Van Wonder 24RL
2015 Jeep JKU, 2003 S10 QC 4x4 or 2017 C-Max
Lake Havasu City, AZ (or Gillette, WY)

Re: HWH Solenoid valves for room

Reply #6 –
Brad -
When we blew a fuse for the slide contact we could not retract our slide.  With the help of Randy At FOT we successfully identified and returned the slide using 2 of the solenoids that you are referring to.



Randy identified them as below.  They are located on the aluminum manifold.  I have six as we have two slides.  If oriented the same as your pic my set up is as described in words.  I thought I had posted a Delta cad drawing, but can not find it.



Rear of coach on Driver's side

Room Extend room 1    Room retract room 1


Room Extend room 2    Room retract room 2


Locking pin                    Locking pin


So I would think that yours is:


Room Extend 1        Room Retract 1

Locking Pin              Locking pin
Scott & Carol Seibert
2001 42' double slide U320 - Sold
Previous - 2002 36' U320

Re: HWH Solenoid valves for room

Reply #7 –
Brad,

It is my understanding the 4 small, short solenoids grouped by the pump are to control the direction of the slide presumably for in and out travel of the slide. By passing / leaking inside one of these solenoids (or possibly in check some valves) conceivably could be the cause of your slide movement....sure sounds like creepy problem to me, ha.

Certain one(s) of these 4 solenoids are the ones you release the pressure/ unscrew the shaft a few turns in order to be able to push the slide manually or when it won't move normally. As I remember it takes a 5/16" nut driver to loosen the shafts only by the few prescribed turns.  For my 2002 the HWH brain box had failed and was exchanged by the factory. Undoubtedly it could have been be repaired by HWH by sending it to them but that takes longer. I have had great service from HWH by going there, though the eastern edge of Iowa is quite a long trek for you. However, that might give you an excuse to camp in my driveway again.

I'm not familiar with the pressure test procedure you have mentioned, but it sounds like it would help to narrow down or eliminate the location of your symptoms.

My 2 cents.
Jim Frerichs
2002 U320 42'
 

Re: HWH Solenoid valves for room

Reply #8 –
Quote from: Jim Frerichs –
I have had great service from HWH by going there, though the eastern edge of Iowa is quite a long trek for you. However, that might give you an excuse to camp in my driveway again.

I'm not familiar with the pressure test procedure you have mentioned, but it sounds like it would help to narrow down or eliminate the location of your symptoms.
I am trying to avoid the trip to Iowa by getting a better education about the system...but if I do get there, I'd like to have them check everything.  And I'd love an excuse to camp in your driveway again.  It's been too long.

Thru this process, I did learn from Joe that what I thought I was doing to HELP the system (releasing the bladder and re-extending the slide to eliminate the pressure on the bladder from trying to pull in) was likely why the system got "out of synch" in the first place.  He agreed that to leave it creeping might well pull the bladder out of its proper position, but his advice was to leave it in until we do the test and solve the problem.  I'll attach the test procedure here.  The Isolation kit is $108 plus shipping, BTW. 
The selected media item is not currently available.Brad & Christine Slaughter
Was:  1990 U280 36'
Was:  2002 U270 36' (With a bathroom door) Build #5981
Is:  2021 Leisure Travel Van Wonder 24RL
2015 Jeep JKU, 2003 S10 QC 4x4 or 2017 C-Max
Lake Havasu City, AZ (or Gillette, WY)