Worked fine until the end of this winter. V70 2004 NA 235k miles.

I took off the interior panel on the tailgate, removed the arm on the outside, freed up the electrical connector and disconnected the washer fluid line before I removed the three 10mm bolts and removed the unit from the car.

I opened the back by removing the torx screws. Pulled the back cover with the washer supply tube, and withdrew the drive gear assembly and the drive shaft. I cleaned up the shaft with a scotchbrite pad and lubed the shaft with grease. Reassembled and reinstalled, and it did the same thing as before.

I thought it might be the three electrical fingers and the contact plate on the drive gear, so I took it out and took it apart and cleaned it up with a rag and scotchbrite pad. Reassembled and reinstalled, same problem.

What did I overlook here?

Washer nozzle is broken off at the end of the washer supply tube. I plan to thread a small screw inside of it and use that to pull it out.
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I'm stuck on Volvo and Volvo's stuck on me....

If you start having more and more intermittant electrical problems in the tailgate, rear door locks, gas cap door, blowing fuses, etc., you may find this to be the culprit:

http://www.brickboard.com/AWD/volvo/1523697/V70-XC70/tailgate_wire_harness_damage_repair.html

Are you sure the arm to shaft connection is tight? And shaft to gears? Also check the electrics (wires) to make sure they are not grounding some where.

The washer nozzle is pushed into place. You might be better off pushing the rest of it through the roof, drop the headliner down a little to get it out before you bend the metal trying to pry it out.

If you don't have a replacement nozzle, clear packing tape is water proof.

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My name is Klaus and I am a V♂lv♂holic

Arm is engaged properly. I should be able to withdraw the end of the nozzle. The motor is mounted in the tailgate.

Ever seen this intermittent wiper problem?

Could it be a defective relay?
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I'm stuck on Volvo and Volvo's stuck on me....

Most cases, the shaft going through the door gets corroded with salt and eventually freezes up the wiper completely. But you greased it and it still hesitates while going from side to side.

Does it always stop moving in the same places? How often does it stop, and how long, before it completes one sweep cycle? Putting a multimeter or test light on the wires to the wiper motor should tell you if current is flowing to the wiper at all times, and if the current stops/starts then try a new relay.

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My name is Klaus and I am a V♂lv♂holic