14 replies to this topic

[gooley]

How does the Wiper/washer operation work. My switch doesn't have the hoses fitted to to the rear of the switch as i have a different switch only for the washers...

how does the washers pump actuate with the hoses etc..

[Bazza]

Hi

It's just a mechanical pump - you push it in, it returns, you push it in again etc. There are tiny rubber valves and springs inside with a large dome shaped rubber diaphram.

Cheers

Bazza

[gooley]

as this is the plastic type so are these the ones where i can disassemble?

[S pack]

as this is the plastic type so are these the ones where i can disassemble?

If it has 3 hex head screws holding the rear plate on then easy to dismantle.
If no heax head screws then the rear plate is glued on.

[gooley]

mine must be a sealed one

[gooley]

http://imageshack.us...0702180104.jpg/

this is the type i have, no screws whatsoever on this switch,

[S pack]

http://imageshack.us...0702180104.jpg/

this is the type i have, no screws whatsoever on this switch,

Yep that's the sealed one. They are said to be a non serviceable item.
For sure there will be some smart cookie out there that has successfully dismantled one, repaired it and put it back together.
Might be better though to try to find the later wiper /washer switch with the removeable backplate. They were introduced into production around March 1973.

[Bazza]

Hi

These are nearly impossible to find in good working order - this is why so many LC LJ owners have converted to electric pumps.

Inside there are 2 very small springs and 2 equally small rubber valves. The springs rust away and the rubber valves perish and no longer seat correctly. I have bought about 5 of these on eBay and only one was working anything near correctly. The sellers always say that they are working fine, but the tension they are feeling when the button is pressed is only the resistance of the large rubber diaphram. Rare Spares sell this dome shaped diaphram but not the very small springs and valves. Some of these pumps have been sitting around for 30 years with rust slowly eating away at the springs.

I managed to cut open a couple of the sealed types and put what parts that were ok into a dismantleable type. It works ok - but for how long?

If buying one on eBay or elsewhere, make sure that the pump has actually been tested using water and hoses - not simply pressing the button to see if it returns.

These are one of the hardest LC LJ parts to source in proper working order.

Cheers

Bazza

[gooley]

see my wipers are not working and i have backtracked it to the switch... the switch is open circuit.

I dont need the washer 'pump diaphragm' to work as i have a separate switch under the dash to activate the washers.

i just want to fix the electrical circuit inside. i have got nothing to lose so im going to open it up

[gooley]

I pulled apart the switch... and put it back together and its working 100%... i didn't really clean anything but i removed the rear plastic lip using long nose pliers and then i was able to slide all the parts out

[flygtr028]

I have repaired washer operatiion by removing the one way valves and addining an inline non return valve to each waher line. Valves readily avalilble through parts outlets.

[Bazza]

Hi

Now that's worth remembering for the future - thanks.

Cheers

Bazza

[shadey1963]

Something like these

Attached Files

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