Install the nut on the damper shaft end, and set the socket wrench and T-handle on the nut.
Compress the damper assembly by hand, and check for smooth operation through a full stroke, both compression and extension. The damper should extend smoothly and constantly when compression is released. If it does not, the gas is leaking and the damper should be replaced.
Check for oil leaks, abnormal noises, and binding during these tests.
Transmission Range Switch Replacement (A/T)
Raise the vehicle on a lift, or apply the parking brake, block the rear
wheels, and raise the front of the vehicle. Make sure it is securely
supported.
Shift to N.
...
Checking and Maintaining Wiper Blades
Checking Wiper Blades
If the wiper blade rubber has deteriorated, it will leave streaks and the
metal wiper
arm may scratch the window glass ...