240 General: Washer Pumps (Again)

[DJ]

Does anyone know if there's a significant difference between the front and rear washer pumps as used on 240s? I posted a thread which included a query on sourcing a replacement pump. I followed the advice and acquired a couple from Lea Valley (extras as future spares).
My original front pump works but leaks where the tubes connect. I've taken delivery of one of each plus a spare. The visual difference is that the plastic housing around the electrical connector is black on the rear and opaque/clear (pump body colour) on the front. One of the new arrivals, a rear type, looks nearly new with no sign of past leaking whereas the replacement front one has a rusty baseplate and a slight weep. I'm wondering if it's OK to put the nicer newer "rear" one on for the front.
Ideas please, guys.

[Clifford Pope]

All mine are at the front, with a long pipe to the back. So if the long run requires a higher pressure pump, then there must be two kinds of front pump, just to complicate (or simplify) the situation.

[DJ]

Thanks, Clifford-
Perhaps I was confusing people with "front" and "rear": What I meant was that there are two together at the front next to the washer bottle- one supplying the front and one the rear, as on yours.
I suspected that it might be a higher pressure for the rear one to supply the longer run to the tailgate (best not fit a rear to the front or I'll drench pedestrians with the headlamp washers)!
Dave
PS The Tee piece with a black cap on the tubing supplying the headlamp washers (behind the rad. grille) was leaking badly where the black cap is and I've replaced it with a new one. This is better but there's a still a slight "weep"- is this normal (pressure relief, perhaps)?

[Clifford Pope]

Not sure about weeping. I know I've often had trouble with these pipes. I think the T-piece is also a non-return valve, or anti-syphon, or something. I know I have had trouble with the bottle spontaneously draining itself by dribbling from the headlamp washers.
I confused the front/back question by half remembering that earlier models had a separate washer bottle at the back, rather than sharing the front bottle and using a long tube.
To come back to your question, I don't know whether the pumps have different pressure ratings. A converse factor would be that there is only one jet at the back, but 4 windscreen and two headlamp jets at the front. I only know that one or more are always blocked, but not always the same ones each time!

[DJ]

Thanks again, Clifford-
Good point regarding number of jets, though, my 92 Torslanda (and my now sold 91 GL) had single jet windscreen washers which I replaced (while sorting out the pump and tubing, etc), as a matter of course, with Scantec ones. These have twin jets- this would be the only "upgrade" to an otherwise oiginal spec car . I'm tempted to put a signature with this as my "mod" so I don't feel left out among all the other members with their declared "tweaks"!

[wujtehacjusz]

My washer pump is gone. Would you be able to share the name of supplier from which you acquired yours (I am aware that last post was made in 2006)?

[chesters6]

i think they are both the same ,the rear probably isnt more powerful because of its distance because the front washes (or has the ability to wash) the headlamps through bigger diameter hose.I refurbed mine when i had the headlamps out and to me both looked identical.
as they are remote to the bottle pretty much any pump will do if its fed via a suitable fitting for a hose to connect to and out of IE some actually sit in the bottle or fit into the bottle, my 240's sit on a frame in front of the bottle.
one had stopped so i removed its base (4 little screws) and found the tiny rotating dooda had become crudded up so the outlet was blocked after cleaning it and carefully siliconing the base and screwing it back together it works fine.
i expect blowing in through the outlet (fit a longer bit of hose) and listening for bubbles in the bottle would let you know if the impeller (remember the doodas name!) or channel was clogged ,the motors themselves are very basic so a clean may work wonders

[Stephen Edwin]

Well 2006/10 is as good a place as any to pick up relevant old conversation to begin my question. Why re-start the plough when there's an already established furrow.

I've replace the valve in the rear offside wheel arch, and had a go at cleaning the tailgate jet, so as to get those dealt with out of the way. But anyway I don't get a buzzzzz on pressing the button to use the rear wash wipe. So there are connection or motor problems. The rear wiper does work so not the button itself.

Is there any difficult technique to prise the connections off the motor? Does the motor fix to the bottle bracket by those difficult to get at screws past the side of the motor barrel? They look at first glance like Allen key screws, so the ball ended Allen Keys I guess.

I can't find the wiring diagram yet. Is black earth and is the pump activated by connecting it to earth?

If I have to replace the pump, I'll ask FRF Volvo Swansea.

And I see Parts For Volvo have pumps - http://www.partsforvolvosonline.com/...oducts_id=6475 - for £19.09.

Or I just might get a non-Volvo bottle and pump to put in the rear wing. e.g. http://www.ebay.co.uk/itm/ACP-Univer...IAAOSw3EFZjA03 for £11.28 looks suitable. 1.2 litre with pump moulded in to the bottle. Would power come from the wiring in the roof that supplies the rear wiper motor? Which colour wire on which side of the roof? I'd have to check amps and whether a relay was needed.

But first, I must find what the fault actually is.

[BrianH]

Talking about drowning pedestrians

I seem to have two exits jets on my headlight washers, one goes vertical sweeping across to the pedestrians.

Does puzzle me, must use some epoxy to sort this one day!

BrianH

[Stephen Edwin]

Originally Posted by BrianH

Talking about drowning pedestrians

I seem to have two exits jets on my headlight washers, one goes vertical sweeping across to the pedestrians.

Does puzzle me, must use some epoxy to sort this one day!

BrianH

There are two holes. The jet nozzle and the other is perhaps a breather hole. Are the jets themselves a bit blocked?

Have you any info re the washer pumps? How to get them disconnected and removed from the bottle frame? Which way the wiring works? I'm in thick and slow condition at the moment and can't spot the answers to simple things.