wipers do not auto return

[calen]

Hi, searched and found threads with this problem but they all die out and no one states a fix to the problem. so Ill ask, why dont they return? ive had the car for 4 years and its never worked, but Its always seemed like the wipers draw more power then their supposed to and started recently trying to figure them out. right now they jsut stop where ever they are when i turn them off. any advice on how to get back my auto return? the wipers work fine otherwise. its an 82 hj47 trtoopy.

 

[CruiserInProgress]

I had similar symptoms with my 79 FJ40 (wiper motor heating up, wipers running slowly, no "park" position when the switch is turned off), but it was a while ago. Here's what I remember doing:

- cleaned contacts in the switch and connectors between the switch and wiper motor,
- opened the wiper motor, cleaned the armature, brushes and contacts,
- I seem to recall there are two circuits in the wiper "plate" inside the motor assembly, one that runs the motor in the "on" position, and one that returns the wiper to the "park" position.

About the "park" circuit, mine involved a finger with a contact on the end that mated with the rotating "plate" or whatever it's called, making connections as it rotates. In my case, that finger was broken at the end, so no connection was made in the park circuit to return the wiper to the park position. Since replacement motors are pretty pricey, I fashion a new contact on the broken finger.

The wipers still go a bit more slowly than they should, but no noticeable heating up of the motor or connectors and they reliably return to park when the switch is turned off.

 

[charliemeyer007]

Mine have aways stopped instantly with the switch. I think Coolerman has a work up on doing the wiper motor rebuild. There might be something in the Haynes manual too. Or free download manuals I'll add the link later.

Land Cruiser Factory Service Manuals (FSMs)

Factory service manuals (FSMs) for your Toyota Land Cruiser ! From the 1950s to the present!

www.cruisercult.com

 

[77mustard40]

Haha, part of the fun of driving a 40 is being able to perfectly time turning off your wipers as you bounce down the road.

Seriously mine kinda return to the general area of their resting position but I literally have to shut them off at just the right time to get them to stop at the right spot. I keep a healthy film of RainX on the glass so the wipers need less use when it’s wet out.

 

[charliemeyer007]

+1 for RainX on the outside and FogX on the inside. On a good day I can walk up, kick the bumper and all the ice on the windows falls off - no scraping. Giant rear heater helps with condensation on the inside.

 

[calen]

thanks every one, will go through the motor and see how healthy everything is. Ive definitely found that waxing my window works waaay better then rainx and lasts longer. hahaha yeah, im pretty good with that wiper stop timming hahaha.

 

[Living in the Past]

Would have to look at a wiring diagram to see just how the motor continues to run park on later wipers. Early one were simple and only single speed. Basically when turn the switch on power is supplied to wiper motor either high or low speed. There is a second power source to the motor circuit that is powered once the key is turned on. When even switch turned of the second circuit takes over. This keeps the wiper motor moving. There is a cam somewhere on motor shaft that opens a set of points for the second circuit. That determines where the wiper stops.