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Topic: Identify HWH switches (Read 355 times) previous topic - next topic

Identify HWH switches

I've gone through the manuals, but can't find one that calls out the part numbers for the individual parts.  Does anyone have this?

I've identified two (what appear to be) pressure switches that are leaking between the brass base and the plastic solenoid body.  I'll replace them once I figure out what they are.  There is one on the tag axle block and one on the drive axle block.  They are marked in the picture.

Keith
2003 U320 38' #6197

Re: Identify HWH switches

Reply #1 –
Drive axle is 85 psi, IIRC

6 pack rebuild

Give me a sec to search for the tag axle.  I think that one's 100 psi...
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Identify HWH switches

Reply #2 –
For those who want to play along, the HWH parts manual from the forum Media manuals section

https://www.foreforums.com/index.php?action=media;sa=media;in=2477

Individual airbags pressure switches are 20 psi for an '03 drive axle.  There are 2 on the manifold block.  There is 1 85 psi system air pressure switch on the drive axle manifold.

Tag axle also has 2 20 psi pressure switches and a line to a 100 psi regulator for the tag lift.  No additional system pressure switches on the tag manifold.

FYI the manual shows the front axle manifold has 2-10 psi pressure switches on the manifold (although it states they could be either 10 or 20 psi).  It shows no system pressure switch but instead the 60-65 psi regulator that Foretravel installs.

Still trying to dig up part numbers.

OK, parts manual shows 20 psi pressure switches are RAP1720.  The 10 psi version for a front manifold is listed as supplied by Foretravel.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Identify HWH switches

Reply #3 –
Thanks for that Michelle!  Looking in there, I found my drive axle block (AP26552) on page 19 and see it shows the RAP1720 20psi pressure switch.  On my manifold, there are two side by side, not just one.  Are they both the same?

I also found my tag axle block (AP25410) on page 37 and it shows the same pressure switch.
Keith
2003 U320 38' #6197

Re: Identify HWH switches

Reply #4 –
Quote from: WS6_Keith –
Thanks for that Michelle!  Looking in there, I found my drive axle block (AP26552) on page 19 and see it shows the RAP1720 20psi pressure switch.  On my manifold, there are two side by side, not just one.  Are they both the same?

I also found my tag axle block (AP25410) on page 37 and it shows the same pressure switch.

Yes.  On the rear drive and tag, the air bag pressure switches for both manifolds (2 each) are the same part number.  The front may be different, and you would have to check with Foretravel (if they aren't marked) to see if they used the default 20 psi or their own 10 psi version.  And there would be 2 pressure switches on the front manifold for the air bags.

Only the manifold for the drive axle appears to have an additional pressure switch.  A single 85 psi one for "system pressure".

This should be the manual (from the Media -> Foretravel Library -> HWH manuals) in the Media section - System 2000 Series, no room locks, 2003+  It doesn't show the part numbers, but it's a good reference for the manifold blocks.

https://www.foreforums.com/index.php?action=media;sa=item;in=1459#viewitem
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320