No Options Apply Pump

jazzeddie1234

Active Member
May 19, 2016
117
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Mandurah
#2
Is the pump running but not pumping water, or not running?

A few things to check: water in the tank... , selector is pointing to a tank inlet(not both at once), check any filters in the line, remove tank filler cap while listening for a vacuum (possible blocked vent pipe)
 
Aug 20, 2016
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Yackandandah
#3
Pump is running but not pumping water. Tanks have water in them but the selector is drawing from both tanks I believe... I'm not that technically minded but i pulled the pipes off the pump and set up a hose in a bucket and the pump wouldn't pump it out of the bucket.
 

jazzeddie1234

Active Member
May 19, 2016
117
115
43
Mandurah
#6
Was the filter clear when you took it off? What type/make of pump is it? does the water flow ok with a hose hook-up? . If not then filters on the tap may be blocked

I would then disconnect the other side of the pump (the pressure side), turn on the taps and see if you can blow air through the pipe to confirm any blockages in the pipework
 
Aug 20, 2016
61
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Yackandandah
#8
Was the filter clear when you took it off? What type/make of pump is it? does the water flow ok with a hose hook-up? . If not then filters on the tap may be blocked

I would then disconnect the other side of the pump (the pressure side), turn on the taps and see if you can blow air through the pipe to confirm any blockages in the pipework
Bit of grit in the filter and its a shurflo 4009, will try the pipes thing though
 

jazzeddie1234

Active Member
May 19, 2016
117
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Mandurah
#10
If you are handy, the shurflo is quite easy to service. It has about 6 or 8 screws (the big ones) around the edges of the black housing that can be removed to inspect the diaphragm for damage. Carefully remember how it goes together as you separate the 2 halves.

You can buy all the internal bits

The housing that comes away also contains a non return valve under the pressure sensor (the 4 screws holding the bit with the wires going in) so check it opens when you press. It also has a small bypass valve (another few screws) but this in unlikely to be the problem (and tricky to adjust)

Found this
https://www.caravansplus.com.au/spare-parts-diagram-shurflo-4009-12v-water-pump-p-15855.html
 
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mikerezny

Well-Known Member
Sep 11, 2016
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Mount Waverley, VIC
#11
yep hand pump not working either... Its got me stumped!
Sounds more like a blockage or an air lock. You can prime the hand pump by putting the spout in a jug of water. There are probably also one-way valves in the water line. They can cause problems. You may need to start from the water tanks, pulling pipes off to ensure you have water flow.

cheers
Mike
 
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mikerezny

Well-Known Member
Sep 11, 2016
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Mount Waverley, VIC
#14
I agree @mikerezny . Any shared pipework must be a prime suspect
Beware: Start of waffle....
These types of problems can be a PITA. Is it one common problem, is it two separate problems, did messing around with the first problem cause the second one? Worse still is when messing around appears to have fixed the problem, but it comes back again.

We all usually start by trying to find the quick 5-minute fix. When that fails, reality sets in and we need to step back, grab a coffee, and settle in for a pleasant afternoon of slow, meticulous, step by step fault-finding. At least at the end of it you will know the entire water supply system of your van. That will make fault finding much easier in the future.
... End of waffle

Two tanks connected together to a single outlet can be a pain. There can be situations were the pumps draw air even though the tanks have water.

cheers
Mike
 

Drover

Well-Known Member
Nov 7, 2013
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Cooloola Coast, QLD
www.expandasdownunder.com
#15
Forget about hand pump,in fact isolate it if possible .............. draw from only one tank at a time............ run a direct line from a tank to pump, if possible let flow from pump just run free, this will show if pump is working or stuffed, if pump is working but won't when connected to normal plumbing then you have an air leak, more than likely the tank selector valve........................ go for the simple easy things first, the pump is usually not at fault, dodgy selector or loose hose fittings are the most common culprits............ hand pumps are rubbish and can actually cause the system to fail as they allow air to be drawn in, depends on the plumbing but it could be the cause of your problems............ you can use a bit of garden hose or just some clear plastic hose from Bunnings, works well as water line.............. if you dismantle the hand pump give it a squirt of olive oil it may start working then........
 
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willobee

Well-Known Member
Apr 8, 2015
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Perth
#17
i occasionally get an air lock from my rear tank.
If i take the breather off the spigot next to the filler and blow back towards the tank this has fixed it in the past.

worth a try
 

jazzeddie1234

Active Member
May 19, 2016
117
115
43
Mandurah
#18
On that note I found a few extra uses for my weight distribution pipe. It is just the right diameter to fit over the vent pipe grid inside the filler box. I use that to blow the air line clear (remembering to wipe the end for grease first....). It also is just right for fitting into the sink waste, to blow down if the pipe is blocked. Minimum of 2 uses and all that
 

mikerezny

Well-Known Member
Sep 11, 2016
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Mount Waverley, VIC
#19
i occasionally get an air lock from my rear tank.
If i take the breather off the spigot next to the filler and blow back towards the tank this has fixed it in the past.

worth a try
If you follow the breather hose back from the filler door to the tank you will probably find it has a loop in it that is filling with water as it sloshes around in the tank. This water prevents the breather hose from equalising the pressure in the tank. We had the same problem. The solution is to reroute or shorten the breather cable so that, as much as possible, it has no dips below the level of the breather outlet.
cheers
Mike