Euan wrote:
Hi there folks
What parts of my 300TD wiper assembly are accessible for lubrication?
My new-ish wipers (MB arms and blades) sweep in a silky smooth fashion
when first started, but if left to run continuously or intermittently,
they soon develop a shuddering action. The shuddering is not major but
it's irritating.
The complete assembly (above the grill) was installed new last year and
hasn't been altered, bent or twisted, so I'm assuming that the problem
originates elsewhere in the mechanism. The shuddering persists when both
wipers are lifted off the windscreen.
Here's the wisdom of Stu Ritter on the subject:
When the wipers are juddering across the windshield, the geometry of the
wiper should be checked. Make sure that the wiper blade is exactly
perpendicular to the windshield. You can bend the wiper arm to insure
the blades perpendicularity. You can also rebow the wiper arm as they
loose their spring over time.
As the wiper arms age, they are fighting against the tension spring that
is located at the base of the arm. The arms get flat over time. You can
regain the spring tension by "rebowing" the arm or re-establishing the
bow (curve) the arm had when it was new. In snow country, I even
exaggerate the bow abit to strengthen the spring for scrapping snow and
ice..
Stu
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
[EMAIL PROTECTED]
