The "ghost" swipe usually occurs more frequently when the left front corner
is pointed generally towards the sun, right.
As to why the wipers are hydraulically powered, as apposed to electrical.
The valve is allowing pressure to slowly build up in the "motor" until there
is enough pressure to make one cycle. Increased temperature also helps.
The Control lever is slightly out of adjustment. To solve the problem you
simply need to adjust the placement of the control wire/cable. It is a
fairly simple task, however a bit of trial and error is required, to get the
exact adjustment.
Have fun
Dave
- -----Original Message-----
From: Al Ross
To: gmcmotorhome
Date: Thursday, December 03, 1998 1:51 PM
Subject: GMC: WS Wipers
>Periodically, for no apparent reason, my Windshield Wipers make one
>"swipe" and stops.
>
>I usually push down on the wiper lever and continue on. Sooner or later
>it will repeat once again.
>
>Any thoughts on WHY????
>
>I have a 78 Royale
>Alan Ross
>
>