How many class A motorhome owners have windshield sprayers that do not get enough washer fluid up to the top of the windshield wiper sweep? Offhand I would say most class A motorhomes with wet wiper arms have this problem. The is simply because the emitters are located near the bottom 1/3 of the wiper blades.
I have come up with a solution for this problem. I simply added an 8" x 1/2" x 1/8" aluminum stock "extensions" to provide a place to attach the washer emitters closer to the top end of the wiper blades. You will need the following.
- Enough 1/2" x 1/8" aluminum bar stock to make two 8" extensions.
- 4 # 4/40 x 1/2 machine screws
- 4 # 4/40 Nuts
- 8 # 4 Washers
- I used Brass for these, if you can find stainless steel that would be better.
- Loctite blue to secure the nuts.
- 1/8" vacuum hose: https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1
- Zip ties https://www.amazon.com/Gardner-46-31...31&sr=1-3&th=1
- Your choice of black paint I used Rust-Oleum.
- 1/8" drill bit
- electric drill.
- 12" scrap of #12 or 14 solid core electric wire with the insulation still on.
After cutting the aluminum stock to length I drill 2 1/8" holes about 1/2" apart near one end. I made two one for each wiper arm.
After drilling the holes, I clamp a vice grip to one end and make a slight dog leg bend one the end with the holes. As shown in the first photo below.
Then I mark and drill a second 1/8" hole about 1/2", the same spacing used for on the extensions, away from the hole already in the wiper arm. Put a plywood scrap of at least 6" x 6" between the windshield and the wiper to protect the windshield in case the drill slips. It also helps to put a little lube on the drill bit to help cut through wiper arm. I used WD40.
I then sand and prep the aluminum bar for paint.
After the Paint is dry, I used clear Gorilla Glue to secure the emitter(s) at the end opposite the end with the holes It is easier if you attach the new hose to the emitter first.
Once the Glue is dry use the machine screws, nuts and washers to attach the extensions to the wiper arm using the Loctite the secure the nuts.
Then I route the new hose to the washer output point near the wiper arm pivot. The tricky part of this is getting the through the center of the wiper arm spring. A bit of 12 or 14 gauge solid residential electrical wire can be used to fish the tub through spring. Just push the wire up through the spring and into the end of the hose and tape the hose to the wire so it can be pulled through.
Cut the hose to connect to the washer output port making sure you allow enough slack for the wiper arm movement.
Finally, I secure the hose to the wiper arms using the Zip ties.
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