Windshield wiper motor maintenance
Checking to see if anybody faced with wiper motor occasionally not driving full around to pull / push arms back and forth; if one arm "bumped" by hand, motor resumes operation until "sticking" again. (Wiper thru shafts lubed as well as pivots on arms inside front cap). This mechanism on 34' 2006 Alpine, consists of platform mounted motor in center (pic 1), driving (thru angle drive) a short arm in a circle, attached to long arms reaching outward to short arms attached to the pivot shafts for the wiper arms (pic 2 & 4). The circular motion of the motor arm is translated to lateral motion for the wiper arms. Thrust on the fibreglass cap with wiper shaft motion is relieved by channel strengthening arms between the motor mount and the wiper assembly mount (pic 3).
It appears the entire assembly has to be dismounted from the front cap to gain access to the motor by:
1) remove miscellaneous interference (e.g., wiper blades, lighting)
2) remove two 1/4" thru bolts on each wiper blade mount to back-side strengthening channel,
3) remove electrical connector to wiper motor,
4) remove sheet metal screws attaching wiper motor platform (top and bottom angles) to large potted/re-enforced section on interior of cap,
5) drop entire assembly from interior of front cap.
If anybody has done this job (rebuild assembly and electric motor), would appreciate any insights gained.