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Topic: No water pressure. Updated (Read 663 times) previous topic - next topic

No water pressure. Updated

Lost water pressure ( water pump) and I am looking for the relay. Light at the switch is lit when turned on. Inline fuse at the pump is good
Looked in front of passenger  seat for the relay but did not see it there. Looked behind kitchen drawers and bathroom vanity too.
Thanks for the help
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: No water pressure

Reply #1 –
It is in the basement behind the fiberglass cover. This panel is mounted on the wall of the big bay on the drivers side.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: No water pressure

Reply #2 –
Mike
The big bay on the drivers side has "w/p fill valve".
Is that it?
It goes to the white relay.
One relay for The water pump and one relay for the fill valve?
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: No water pressure

Reply #3 –
Quote from: Lt403 –
1. The big bay on the drivers side has "w/p fill valve".  Is that it?
2. One relay for The water pump and one relay for the fill valve?

Frank,

1. Yes that breaker should be for both. If you look at the other side of that breaker there is a little button that may be popped out. If it is push it back in.  All of those breakers are manual reset so look for the little button. I bet this is your problem rather than the relay.

2. Should be, that is how several coaches that i have worked on are set up.

3. This is a FYI:  If you look at those relays they are the same relay that some generators have in there control panel.  If you look at the numbers they should be the same as what Glenn has in his thread about his generator trouble.  Thus is the reason I carry a spare as it fits 3 places on our coach.  Next time you have the generator out you might give it a look and see.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: No water pressure

Reply #4 –
If those are the breakers then I still have not found the relays
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: No water pressure

Reply #5 –
Those 2 white things in the 2nd pic are your latching relays. They are what makes multiple switches work.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: No water pressure

Reply #6 –
Ok
I followed those wires to a Bosch relay and replaced it. Still no pump.
I will continue on this tomorrow by checking the pump.
Thanks for the help
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: No water pressure

Reply #7 –
Did you check the breaker to see if it had power on the outgoing side? 
You could have a bad ground where the pump is tied to the framework.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: No water pressure

Reply #8 –
I had a bad ground wire where the pump ground wire when to ground. I lengthened the ground wire and fastened it to the compartment light switch. Problem solved.

So, supply your pump with 12V with a jumper wire or use a test light to see if the hot wire is really hot. If the pump does not work, check the ground wire. If it still does not work, the pump is faulty.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: No water pressure

Reply #9 –
The latching relays latch and release when the ground wire is momentarily connected to ground using any of the momentary wther pump switches.  When it it latched power goes to the pump and to the indicator lights.  Most of these have a button on the top to cycle the relay.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: No water pressure. Updated

Reply #10 –
Ended up replacing the water pump. I was fortunate enough to have one that came with the coach.

Can the old one be fixed or is it a disposable item?
Are there any parts that I need to cannibalize
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH
 

Re: No water pressure. Updated

Reply #11 –
Quote from: Lt403 –
Ended up replacing the water pump. I was fortunate enough to have one that came with the coach.

Can the old one be fixed or is it a disposable item?
Are there any parts that I need to cannibalize

I'd contact the mfg as individual parts like the diagram are available individually.

SHURflo Parts 4048-153-A75, 94-800-01, RV Freshwater Valve Ass'y - My Green...

https://youtu.be/XaJjU09ygmU

https://youtu.be/FnMx0Ph5WFw
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
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