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Re: Advise on TR4A Windshield Wiper Stopping Position

To: tom_winslow@email.msn.com, triumphs@Autox.Team.Net
Subject: Re: Advise on TR4A Windshield Wiper Stopping Position
From: DANMAS@aol.com
Date: Mon, 1 Jun 1998 15:49:14 EDT
In a message dated 98-05-30 21:12:42 EDT, tom_winslow@email.msn.com writes:

> First, when I turn off my wipers, they bottom out normally and then return
>  to a position about 25% into the full wiper cycle. This is a little
annoying
>  having to look through the wipers but I have been living with it since we
>  purchased the car (with the intentions of fixing it later).

Tom,

This part of your problem is very easy to fix -- just remove both wiper arms
and replace in the proper parked position.  The shafts coming out of the cowl
are splined, as are the wiper arms.  Just rotate the splines till they match
up where you want them.
  
>  Second, what I discovered while traveling at high speed was this. The wind
>  slowly forces the wipers further and further up the windshield. Eventually
a
>  limit switch of some sort must be engaged because the wipers start,
complete
>  the cycle, and stop again in the 25% position. Then they slowly creep up
the
>  windshield again until the cycle repeats.

Yes, there is a limit switch in the wiper motor, and its purpose is to park
the blades after you turn off the wipers.  They rotate till they reach the
parked position, and then the motor turns off.  For description of this go to:

http://www.vtr.org/maintain/wiper-motor/


>  It appears that (1) I need to figure out how to adjust/control the travel
of
>  the wiper blades so that they will stop at the proper location and (2)
>  determine why the blades are moved by the wind  while driving at high
speed.

I would assume that once the blades are in the proper parked position,
movement at speed will no longer occur.

Hope this helps.

Dan Masters,
Alcoa, TN

'71 TR6---------3000mile/year driver, fully restored
'71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion - see:
                    http://www.sky.net/~boballen/mg/Masters/
'74 MGBGT---3000mile/year driver, original condition - slated for a V8 soon
'68 MGBGT---organ donor for the '74

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