Wiper sweep problem

[HersnotHis]

Thanks to all for thoughts comments and ideas. I have improved things a bit by taking the wiper off its splne and re-mounting a few degrees further clockwise. At least the sweep does not now stop in front of the drivers face but of course the sweep does now start at a higher angle. The arm still doesnt look right however. I am sure this is not all down to the size of the sweep.

When the wipers are turned off howaever it takes only a gentle push to move hem to the bottom of the screen.

On Rimmers exploded parts diagram it appears that the pantograph arm is mounted to the O/S of the spline whereas mine is mounted on the N/S. Whats yours like? If someone with a working wiper could post a photo in the "high" position for comparison to mine I would be extremely grateful.

[Lingen]

I have just been and photographed mine in the high position, but I don't know how to post it here. Perhaps I could email it to you if you still need it. Something is wrong there.
Mike.

[Lingen]

I have now read your information about the position of the pantograph arm mounting point, which should be at about "One o'clock" to the right of vertical. There is a tag on the back of the bracket which fits in to a slot in the body panel where the wiper drive passes through, to make sure it is correctly located. Perhaps this has broken off, or the bracket is a LHD one.
Mike.

[susiedeer]

I can find no trace of this number on the cover ( The wiper unit is still in the car)

I have been studying the motion of the wipers and it maybe I have got it wrong in that they do park. i.e. they do return to the starting position but this is some 20 deg. up the screen. I was perhaps wrongly assuming that park was the same on my previously owned Rover P4 where when switched off the wiper drive revolved an extra bit anticlockwise to pull the wipers below the screen.

There is definitely only one speed irrespective of whether the switch is in position 1 or 2.

The bottom of the drivers side wiper goes to within about 4 cm of the RHS of the screen but the blade is then angled at about 45deg. to the left. If it was vertical even it would nearly fully wipe the Drivers view area.

Is it possible that the wiper arm fitted is incorrect and possibly that for an LHD car? Although the sweep range seems to be not what it should be

I have taken 2 photos which hopefully will appear below. For clarity I have put sheet of white paper behind the wiper.

[ATTACH=CONFIG]30571[/ATTACH]

[ATTACH=CONFIG]30572[/ATTACH]

I think your main arm is not set correctly or is the wrong length. In case it helps, here attached is the "at rest" setup.
photo 1.jpg
The arm ends at the T shaped piece and I think it's meant to be perpendicular to the screen to allow the blade to be parallel to the bottom of the screen and here's a close up of the wiper end.
photo 3.jpg
I think that the orientation of the pantograph block is important too and may sort out the "length of the arms" issue and get the T piece oriented correctly
photo 2.jpg

[Stagsongas]

Here are some 'action shots' of my OS wiper.

Stag_Wiper1.jpg

Stag_Wiper3.jpg

Stag_Wiper2.jpg


It's quite difficult to anticipate when to press the shutter button as the camera has a delay, hence 19 pictures taken!

Good Luck

Steve

[HersnotHis]

Wow what a response! Thanks to both Susiedeer and Stagsongas for the photos. Have PM'd Susiedeer as we are it appears near neighbours.

Looking at the photos it appears that the orientation of the pantograph block whilst not reversed compared to mine is turned more towards the vertical particularly on Stagsongas photo.

[Stagsongas]

It's pretty clear that the geometry of your arm is not quite the same as mine, then again I would not say mine is perfect either. It's just one of the things that does not annoy me enough to become higher on the 'must review and improve' list.

Mind you, I don't aim to go out and drive the car in the rain, so I guess it's all a little moot.

Regards

Steve

[HersnotHis]

Some explanation of the reason such a problem has a high profile for us. We live a couple of miles from the road from hell which we have to use albeit for short distances to get almost anywhere. Whilst we do not anticipate driving the Stag on this road in the rain you never know....!? whatever reasonably effective wipers are a must just in case. Ones that stop halfway across your view would make driving along with the spray from the continuous stream of mainly overseas registered trucks extremely hazardous.

BTW Steve - just turn the ignition off at the apprpriate part of the sweep and take a still.

[Stagsongas]

And watch it continue past the point you wanted it to stop at with momentum......? That would take as long as working out the camera delay, but far less fun!

[Mike Stevens]

Another possibility is that you have a lot of play in the wheel boxes. You can improve this by carefully withdrawing the wiper drive 'cable' from the wheel boxes until it's just clear of the LH one, Then turn each wheel box by 180 degrees and replace the drive cable. This now gives you an unworn bit of the gear wheel in the wheel box. Assuming of course that this hasn't already been done!

[Stagsongas]

A good idea Mike.

Just to be clear, you'd have to withdraw the cable far enough to clear the wheelbox closest to the wiper motor to rotate both spindles 180 degrees. But that's not why I'm posting.

On other models equipped with the Lucas powered system, it was completely unneccessary to go to all the trouble of taking the motor cover off and disonnect the cable from the crank. All that was required was to dismount the motor, disconnect the wiring and then undo the big nut on the end of the motor which connects it up to the cable outer tube.

With both wiper arms already removed, simply pull the motor, the wheebox spindles will spin and the cable comes right on out. This is much easier, and the cable with motor still attached will go back into position by reversing that procedure. If you need to disconnect the cable from the motor it is much easier to do that on the bench, it can be fiddly when the motor is still on the car. I haven't tried this on the Stag yet, but I'm sure I'll have cause to at some point....

Regards

Steve