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Wiper drive #669837
29/10/20 05:56 PM
29/10/20 05:56 PM
Joined: Feb 2015
Posts: 55
I
Island Mog Offline OP
Just Getting Started
Island Mog  Offline OP
Just Getting Started
I

Joined: Feb 2015
Posts: 55
Help please!
The centre wiper on my 2006 Roadster has stopped!. Narrowed it down the 'rack' &/or the 'wiper wheel box'.
It seems there are two types of wheel box, 32 or 40 teeth.
Before dismantling everything, would anyone know what type would be fitted to a 2006 S1 Roadster?


Regards
Peter T
2006 Roadster.Connought Green 2 seater
Re: Wiper drive [Re: Island Mog] #669841
29/10/20 06:02 PM
29/10/20 06:02 PM
Joined: Jul 2007
Posts: 18,239
Suffolk
John V6 Offline
Member of the Inner Circle
John V6  Offline
Member of the Inner Circle

Joined: Jul 2007
Posts: 18,239
Suffolk
It seems odd only one failed. Is the gear that moves on the rod loose i.e. is there a nut you can tighten?


JohnV6
2006 Indigo Blue Roadster S1
2014 Brooklands Edition Roadster "Brookland's Belle"
Re: Wiper drive [Re: Island Mog] #669855
29/10/20 07:06 PM
29/10/20 07:06 PM
Joined: Aug 2017
Posts: 288
Bergen, Norway
R
Robbie Mathisen Offline
Learner Plates Off!
Robbie Mathisen  Offline
Learner Plates Off!
R

Joined: Aug 2017
Posts: 288
Bergen, Norway
Sounds like the connection somewhere between that specific wiper arm and the inner drive cable. Ought to be some of the following:
Connection wiper arm - splines at the spindle. Not likely, but check.
Connection splines - spindle. I think the splines are screwed onto the spindle, then locked with a hex grub screw. Could it be loose?
Defect wheelbox, the spindle is not moved by the inner drive cable.
Defect inner driving cable.
Cannnot be anything in the wiper gear box, as long as the other two arms are moving.
If you look at CarBuilderSolutions' website, they have all these items, but I can't see any 32 vs. 44 teeth versions of the wheelbox. Might be a good idea to contact them about the wheelbox.


Robbie the Norseman
2004 V6 Roadster
Sherwood green
Re: Wiper drive [Re: Island Mog] #669857
29/10/20 07:10 PM
29/10/20 07:10 PM
Joined: Apr 2019
Posts: 661
Lancashire
RobCol Offline
Talk Morgan Regular
RobCol  Offline
Talk Morgan Regular

Joined: Apr 2019
Posts: 661
Lancashire
It sounds like a wheelbox problem if the outer 2 wipers are working.

There are 2 nuts on the wiper wheelboxes backplate behind the dash that hold the wiper rack to the wheelbox drive wheel. You will have to remove these to look in side (and the nut on the outside of the car if you replace the wheel box).

Its likely that the wheel isnt connected to its shaft or alternatively the splined wiper fitting that the wiper attaches to has come away from the shaft. Car builder solutions or Melvyn Rutter will have the wheelboxes.


Rob

4/4 Sport Grey

Re: Wiper drive [Re: Island Mog] #669866
29/10/20 07:47 PM
29/10/20 07:47 PM
Joined: Jul 2019
Posts: 1,419
L
Luddite Offline
Has a lot to Say!
Luddite  Offline
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L

Joined: Jul 2019
Posts: 1,419
Have no idea as to the wiper kit fitted to your Morgan though have messed about with wipers on older cars over the years.

I might start by lifting the wipers clear of the screen and checking for free play on each of the wiper arms by rocking it left and right, if there is an issue of excess free play on any one arm compared to the others then it might be worth removing the arm on the suspect arm and checking the splines in it and on the driving wheel, I have seen these stripped to some degree.

The arms can over time size on to the driving spindle, and can be difficult to remove. There tends to be a small spring clip arrangement holding the arm to base of the drive wheel that requires to be prised and held back to allow the arm to be released.

The wheel boxes can suffer worn driven teeth where they run on the rack drive wire , dependant on the degree of arc there may be enough good teeth to disengage the wheel from the drive and rotate the wheel to present the non worn teeth to the drive.... Also if the drive wire has suffered wear, it too could be disengaged and rotated to present the unworn section to the teeth of the driven wheel in the wheel box..

Hope I have not muddied the water.

Re: Wiper drive [Re: Island Mog] #670023
30/10/20 05:26 PM
30/10/20 05:26 PM
Joined: Feb 2015
Posts: 55
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Island Mog Offline OP
Just Getting Started
Island Mog  Offline OP
Just Getting Started
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Joined: Feb 2015
Posts: 55
Thank you to everyone for the responses & suggestions.Having already done the basic checks as suggested above, it seems the wheel box is the most probable cause for the failure; will have to drop the dash & physically check the number of teeth before ordering.


Regards
Peter T
2006 Roadster.Connought Green 2 seater
Re: Wiper drive [Re: Island Mog] #670402
01/11/20 07:28 PM
01/11/20 07:28 PM
Joined: Feb 2015
Posts: 55
I
Island Mog Offline OP
Just Getting Started
Island Mog  Offline OP
Just Getting Started
I

Joined: Feb 2015
Posts: 55
Just a quick update; I had e-mailed gomog from their web site on Friday & posed the same question. Lorne responded very promptly, but advising that he didn't know.
However. for information, he has just replied & confirmed it's 32 teeth.


Regards
Peter T
2006 Roadster.Connought Green 2 seater
Re: Wiper drive [Re: Island Mog] #670456
02/11/20 07:36 AM
02/11/20 07:36 AM
Joined: Aug 2017
Posts: 288
Bergen, Norway
R
Robbie Mathisen Offline
Learner Plates Off!
Robbie Mathisen  Offline
Learner Plates Off!
R

Joined: Aug 2017
Posts: 288
Bergen, Norway
Originally Posted by Island Mog
Just a quick update; I had e-mailed gomog from their web site on Friday & posed the same question. Lorne responded very promptly, but advising that he didn't know.
However. for information, he has just replied & confirmed it's 32 teeth.

What a friendly and helpful community!


Robbie the Norseman
2004 V6 Roadster
Sherwood green
Re: Wiper drive [Re: Island Mog] #672884
15/11/20 07:03 PM
15/11/20 07:03 PM
Joined: Feb 2015
Posts: 55
I
Island Mog Offline OP
Just Getting Started
Island Mog  Offline OP
Just Getting Started
I

Joined: Feb 2015
Posts: 55
A further update, & for general information; not only do the correct number of teeth have to be specified, (32) but also there are two lengths of shaft available for the Wheel Box! The correct length to suit the Roadster is 65mm, this turns out to be the same as fitted to a TR6.
Replacement fitted today; www.angclassiccarparts.co.uk; now have three working wipers, just in time for this weeks MoT!
Thanks for all the replies & suggestions.


Regards
Peter T
2006 Roadster.Connought Green 2 seater

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