Wiper blades

Technical Area for all the problems you have in the garage
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Homewood
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Re: Wiper blades

Post by Homewood »

Good maybe will fit mine back tomorrow
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nikbj68
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Re: Wiper blades

Post by nikbj68 »

There is a 'striker' on the cog which parks the wipers, if you have swapped the parking side you will have to move the striker 180° too.
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Homewood
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Re: Wiper blades

Post by Homewood »

It never parked before just stopped where I switched the wiper switch off, its a dr3
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nikbj68
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Re: Wiper blades

Post by nikbj68 »

Doh! Sorry, I did see that it was a DR3, but was distracted.
Does the screw move in & out when you turn the knurled nut? Could be stripped thread or the switch mechanism is seized, or both...but it would only give fine adjustment on the park position, and would therefore have to park somewhere for it to have an effect!
If you don`t have the wiper switch with the park terminal, that could explain why it has never parked.
Dad`s Greyhound causes similar hilarity when the reverse park initiates, as sometimes it might do 1, 2 or even 3 strokes before deciding to reverse, half-wipe, then disappear off the screen! :lol:
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Roger King
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Re: Wiper blades

Post by Roger King »

If you have the correct DR3 (6-wire motor as XK Jag, not 5-wire as Rover) and the correct rotary switch (variant of Lucas PRS7, several screw terminals - 8 or 9, from memory), you should have a swept area on the screen which is symmetrical either side of a vertical line, with the motor running in reverse to park down off the screen. Parking is controlled entirely by the dashboard switch, not a motor-mounted switch as in later Lucas systems. If you need the wiring diagram for the wiper circuit I can send you this - it's pretty complicated!
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Re: Wiper blades

Post by Colin Newbold »

Yeah Rog, I'd like a copy of the wiring diagram please. Do you still have my email address?

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Roger King
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Re: Wiper blades

Post by Roger King »

It's probably simpler if I just post it here.

This will only work with the correct DR3 motor, must be 6 wires plus earth, not the more common 5 wires plus earth. Also you must have the correct PRS7 switch with 12 (yes, twelve) screw contacts on the back. Anyhow, it's page 50 of the Cobra manual:

Image

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Homewood
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Re: Wiper blades

Post by Homewood »

I will check but my switch us a prs5 !
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Roger King
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Re: Wiper blades

Post by Roger King »

Homewood wrote:I will check but my switch us a prs5 !
Which may be why the wipers won't park.
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nikbj68
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Re: Wiper blades

Post by nikbj68 »

IIRC, pin 13(Red) is the park.
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