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Old 03-21-2016, 01:45 PM   #1
Join Date: May 2015
Location: Bremerton, WA
Posts: 53
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.
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Name:	16 Driver side view  ctr mechanism.JPG
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Name:	015 Driver side view op arm for wiper.JPG
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Name:	009 End_on view op arm for driver side wiper.JPG
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Name:	017 Pass side view  op arm for wiper.JPG
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Old 03-22-2016, 10:28 AM   #2
Join Date: May 2015
Location: Bremerton, WA
Posts: 53
Follow-up on windshield wiper motor maintenance

Thanks to EngineerMike and possible contributors of WRV Alpine documentation, learned that Diesel Equipment Co, Wiper Technologies Division is still in business (N.C.). A great POC is Shawn @ 1 800 222 7159 who was the tech rep that used to travel to WRV to provide support, and is therefore very well versed in all aspects of the assembly of dwg “Western RV W63778” – the system used in a '06 Alpine and many prior years. All assembly parts are still available, incl the motor (possibly not repairable since Shawn has no internal parts) = $117. Also learned that the motor can be dismounted by removal of crank arm nut/arm (part #4 & 5), then the 3 securing bolts (part #3) from the motor bracket (part #1).
Attached Files
File Type: pdf Wiper System Pantograph.pdf (608.9 KB, 43 views)
File Type: pdf Wiper Crank Adjustment Pantograph.pdf (692.7 KB, 30 views)
File Type: pdf Windshield WiperAssembly 2-Piece 97-06.pdf (301.0 KB, 46 views)
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