rear wiper leaking

[megatexture]

a mate of mine has a 02-03 gu patrol and when u park up a hill even as low as 4deg faceing up the,rear wiper water outlet leaks to the point it will drain the whole tank out. has any one had this issue could this just be a bad seal on the wiper pump?

[Mmarcuss]

There is a little check valve in the line near or in the large barn door. This is your culprit

[megatexture]

ahh ok will let him know cheers !

[Cowboy]

There is a little check valve in the line near or in the large barn door. This is your culprit

Yep, spot on.
Ours was doing the same thing, changed the check valve, and all good.
Only problem was at the time (3moths ago) Nissan didn't have any, so had to order in....

[lufkin]

this is the part that needs replacing www.atocauto.com.au/proddetail.asp?prod=28628_D2700

[Alben]

Is this the same on the early GQ Patrols/Mavericks also?
Cheers
Ben

[billyj]

behind the drivers side body tail light on a gq

[Alben]

Thanks Billyj,
I will have a look for it.
Cheers
Ben

[Dhuck]

Check ebay. they are about $13 plus postage. But yes this is a problem.

[Robo]

After reading this post yesterday I removed mine as it leaked.
Checked , yeah flowed in both directions, given me the sh### for a while now no water.
Hand pump spray bottle with car wash in it, few squirts either way.
Flushed under tap.
Still no good.
Have a bottle of hydrochloric acid.
Dipped a small round file in and applied directly in valve a few drops inside
Giving 1 minute and the valve spring a little work /prodding with file end.
flushed out again with water.
hold valve up hard against running tap with file inserted to work valve internals .
re-flushed with pump bottle car wash squirts and flushed again with clean water.
FIXED, for about 5 cents and 5 minutes

[Robo]

Ebay 5mm wiper check valve.
item no 290592269683.
$5 + postage

[megatexture]

that part looks like the 1 way valves for fish aquariums.. to stop water siphoning into a air pump.
thanks all.

[lufkin]

that part looks like the 1 way valves for fish aquariums.. to stop water siphoning into a air pump.
thanks all.
its not trust me, the one your thinking of on a aquarium only lets air go 1 way and not the other, this valve has a spring inside it, which allows the water to travel through it when having the pressure of the water pump on it, the fish tank one doesnt, to elaborate, the water is leaking out when parked on a hill, its because the spring has gone soft, if you put a 1 way valve in from fish tank either A you have to make it not let water come out at all which means you cant use wiper anyways, or you turn it around so water will continue to flow through it, which doesnt solve the issue, hope that made sense

[Robo]

Yep true, spring may go soft.
the other cause can be a bit of calcium or some deposit can jamb valve open so it drains dry when nozzle is lower than tank.
and I did fix valve in 5min as described in previous post.
parked inclined on my driveway overnight, no drips anymore.

Cheers

[Strugs]

I had to park my Patrol on the street last night (first time) and we live on a hill. Went to take the bins out later on and noticed water everywhere on the road behind the car. Freaked out for a second until I saw the drips coming from the rear wiper. Sure enough, this morning I checked the water tub and it was bone dry. Glad there's a thread on this. Will have to investigate the wiper check valve.

[BigRAWesty]

Same here. Got dribble stains down the door. Never noticed until I remobed the tyre..

[Strugs]

I've got a 2003 GU, so I assume the check valve is either in the rear driver's side quarter panel compartment (with jack etc) or inside the barn door. I've never attempted to remove a door panel before. Any advice on how, without breaking or ruining anything? Perhaps a link to a video? Cheers fellas.