Marshall, The original post states "The shuddering persists when both wipers are lifted off the windscreen".
In other words, this is something other than the blades chattering across the glass. I suspect something in the mechanism is worn out. Thanks, Tom Hargrave www.kegkits.com 256-656-1924 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Marshall Booth Sent: Sunday, February 04, 2007 8:39 AM To: Mercedes Discussion List Subject: Re: [MBZ] Lubricating wiper mechanism to shuddering wipers 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] _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
