The problem turns out to be a worn out ball socket attaching the ball that
rotates on the motor to the stamped piece that translates the rotational
motion into reciprocating motion. When the ball socket wears, the arm
drops off, and no wipers.
The two tricks to the job are 1. understanding that this wiper is
accessible from under the hood and 2. figuring out that the covers lift off
the nuts on the wiper arms and the little lugs that hold them in place are
toward the joint and the sides of the covers can be pried out in this area.
Still unclear if the ball and socket can be ordered or if I have to get a
whole assembly. It was after Rusty's hours by the time I got it apart to
figure out the problem.
At 04:20 PM 6/28/2005, you wrote:
Loren,
Don't know if the 116 & 126 wiper arms are attached in a similar fashion,
but on my 116/300SD ....
From 116 Chassis and Body manual...
1. Lift wiper arm from windshield
2. Disengage lock covering cap by slight lifting of cap.
3. Place wiper arm again against windshield glass wile simultaneously
completely lifting covering cap.
4. Unscrew fastening nut and pull wiper arm from bearing shaft.
You may need to apply some upward pressure w/a screwdriver (and something
to protect the nearby surface) to get the arm free from the shaft.
And there probably are some o-rings and plastic protectors under the
arm. Don't drop any of them..... BTDT.....
Take care,
Chuck
Phoenix, AZ
1980 300SD
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