I pulled my dash last winter on my '70 2000 and while it was out, I
tried to find out why my wipers ran so slow. I took the motor out and
took it to reputable auto electric shop. They tested it on the bench
and it produced the correct speed and torque. I disassembled and checked
the pivots of the wiper mechanism under the dash and they were in very
good condition and moved without resistance. I found that the most
resistance to rotation was where the shafts pass through the mounts on
the body. I soaked them in penetrating oil and they freed up very
well. It helped the wiper speed to some degree but not what I'd hoped
for. I think it's possible to get the most benefit for a typical wiper
speed problem by just removing the wiper arms and soaking the mounts
with penetrating oil from the outside of the body. It's worth a try and
easy to do. The pivots under the dash seemed they would be very
unlikely to be the problem from what I found and are impossible to
remove and clean/relube without pulling the dash, which is a major
chore. I think the roadster wiper speeds are by nature, 2 speed, Off
and Slow. Rain X on the glass helps a bit too.
Gary
Graeme Suckling wrote:
>Hi Ross, you may have a tired motor there but, you may also have dry wiper
>arm pivots.
>Disconnect the mechanical linkage at the wiper motor and check if the switch
>drives
>the motor at an OK speed for both HI and LO speeds.
>Then try to operate the wiper mechanism manually to check for any binding.
>My guess is that the pivots are nearly siezed.
>There is a how-to-fix in the archives.
>
>
>Regards,
>Graeme Suckling
>1965 SP310
>1971 P510
>1972 PL510
>1973 HS30
>http://www.imagestation.com/album/?id=4290669159
>Adelaide
>South Australia.
>While I am at it, the wipers on my car work, but just barley, they seem to
>move very sloooooow and only one speed. I suspect that they are not wired
>properly for
>2 speed operation. Any thoughts there?
>
>Thanks,
>Tom Ross
>1970 2000 Roadster
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