Replacement wiper motors for early FJ40's.

[bb67tlc]

So I received a pair of these wiper motors... but they switch the negative wire while the originals in my 67 switch the positive wire. I guess it wouldn't matter if I isolated the motor, but the negative is grounded to the unit's casing, which touches the body of the car. Kept blowing a fuse till I figured that out. How did you wire yours up?

 

[cruiserkreutz]

So I received a pair of these wiper motors... but they switch the negative wire while the originals in my 67 switch the positive wire. I guess it wouldn't matter if I isolated the motor, but the negative is grounded to the unit's casing, which touches the body of the car. Kept blowing a fuse till I figured that out. How did you wire yours up?

Did you get this figured out? I'm getting ready to install these in my 1967 FJ45.

 

[Krondor]

Bumping this thread to see if there was an answer about the grounding issues.

 

[bryan8118]

Follow up on this thread, as I found some interesting things.

I bought a pair from speedway motors, and this is what I found.

1. Yes, swipe degree IS adjustable. (Haven't installed them yet, but I think that 110º of sweep, is a lot for this windshield. (more below)

2. No, you technically can't change the parking position by just rotating the big gear, as the lobe for the parking spot is right on that gear, and the lobe only fits one way (quick talk about this below)


So, for the sweep angle.

You can choose 3 swipe angles

50º
90º
110º

Speedway motors advertise their kit, as a 90 degree sweep, but no. Out of the box, the lit is 110º sweep.

To change the sweep degree, you will need to take the big metal gear out.

On that gear, the arm that moves the shaft is pressed into the gear, with a small pin.

You can remove the pin by punching it out of the hole. It's press fit.

Once you remove the pin, you will see on the bug metal gear, 3 holes. Each one is some mm separated from the center of the gear. (As shown on the picture)

On the big gear, next to the holes, is the sweep degree that the hole corresponds to.

Once you decided what sweep degree is the best (I chose 90º), punch the pin with the arm, on the hole that you want.

That's it, you changed the sweep degree.


Now, by changing the arm location, you will mess up the parking spot.

This means that now the parking spot is at the center.

As I said, I still haven't installed the motors yet. Once I install them, I will fight with the parking position set.


I took a quick look, and when you set the sweep degree to 90º, the wiper parks almost at the center of the sweep.

Behind the big metal gear, is the cam for the parking. It's a plastic cam, and it can't be adjusted, as it only fits one way.

What I'm planning to do, is to remove the big gear again, and put it in a vice, then try to turn the big gear (assuming it's a press fit into the shaft) and rotate it until I set the parking spot to the right. This will be tough, as I assume if you turn the gear too much, you will strip the press fit of the shaft. So, not too many attempts to make it perfect.

I will update once I install them into the '66

 

[bryan8118]

Update #2 and conclusion

So, to start with, this is how it looks all properly installed. If you put the motors 180º flipped, they will interfere a lot with the view, so I chose this position.

The retaining bolt, the shaft, both length and diameter, is a completely perfect fit for the windshield frame. No issues at all with mounting.

Things to note. When installing the motors like so, the vent hole on the cover of the motor, will end up facing up. I flipped the covers 180º assuming they're symmetrical but they aren't. I messed up the cover screw's threads.

As I discussed on the last post, 90º is definitely the perfect sweep angle. 110º is a lot, wiper blade touches the windshield rubber. 50º is too small, it won't clean properly.

90º sweep is the way to go.

Now, the fun stuff, the parking position.

Again, as discussed on the previous post, I said that I was going to put the big inner gear shaft (shown on the las post pic) into a vise, then grab pliers and turn the gear from the shaft until I found the sweet parking spot.

Well, it works, but just as I expected. The press fit of the gear into the shaft ended up stripping. So, the gear rotated freely into the shaft.

Kinda not a big deal. I grabbed a center punch, once I put the gear into the sweet spot according to the shaft, I center punched the middle of the gear (actually, the shaft) like mooshrooming it. That seemed to help and bring the press fit back again. Did the same to the small arm pin, because the last time I changed the sweep angle, the pin didn't like to go as press fit as it was.

At the end, it worked perfect. (quite trial and error with one motor, but fast process into the other motor) and the wipers actually park at the right side of the windshield.

Another thing to note with the kit: Wiper arms are so flimsy. One of them, exploded when getting it out of the box. The other grenaded once it was sweeping the windshield. I was able to fix them (let's hope it holds) by reassembling it, and grabbing pliers and bending the arm tabs to make it grab a little tighter.

Be careful with the motor's threads (small screws) as they are like butter.

At the end, this is how it looks like. (yes, everything is very dirty. Also, windshield is covered with some weird stuff, dirt, mud, whatever from sitting many years. That makes the wipers go like bouncy when they sweep)

 

[bryan8118]

So I received a pair of these wiper motors... but they switch the negative wire while the originals in my 67 switch the positive wire. I guess it wouldn't matter if I isolated the motor, but the negative is grounded to the unit's casing, which touches the body of the car. Kept blowing a fuse till I figured that out. How did you wire yours up?

Regarding this question, and also answering to @cruiserkreutz and @Krondor

I don't have the OE harness on this rig. (long story short, this is not my car. This is one of my clients, and he hired me to make the whole harness, as the past 2 guys that tried, didn't know how to (3FE swapped 66 with LPG)

But, if I recall correctly, the 67 and below wiper harness has a total of 4 wires going to the windshield.

White with black stripe: Ground
Blue with back stripe: 12V IGN

And, there's 2 blue with white wires. That's 12V SWITCHED coming from the wiper switch.

Technically, to make the OE harness work into this motors (with the OE switch):

White with black wire goes to motors - lead
Blue with black goes to motors + lead
Blue with white wire goes to motors S lead BUT

Before you turn the switch on, these motors are designed to work with negative switched S lead.

That means that you have to modify the OE wiper switch.

If you look at the wiper switch, you will find 3 wires

2 of them are blue with white (same ones that go to each wiper motors S lead)

And the remaining is a blue with black stripe wire.

The modification that you need to do is easy. Cut the blue with black wire from the switch, leaving 2 inches of wire.

Then, add that wire to a ground.

That's it. They should work fine.

 

[bryan8118]

Regarding this question, and also answering to @cruiserkreutz and @Krondor

I don't have the OE harness on this rig. (long story short, this is not my car. This is one of my clients, and he hired me to make the whole harness, as the past 2 guys that tried, didn't know how to (3FE swapped 66 with LPG)

But, if I recall correctly, the 67 and below wiper harness has a total of 4 wires going to the windshield.

White with black stripe: Ground
Blue with back stripe: 12V IGN

And, there's 2 blue with white wires. That's 12V SWITCHED coming from the wiper switch.

Technically, to make the OE harness work into this motors (with the OE switch):

White with black wire goes to motors - lead
Blue with black goes to motors + lead
Blue with white wire goes to motors S lead BUT

Before you turn the switch on, these motors are designed to work with negative switched S lead.

That means that you have to modify the OE wiper switch.

If you look at the wiper switch, you will find 3 wires

2 of them are blue with white (same ones that go to each wiper motors S lead)

And the remaining is a blue with black stripe wire.

The modification that you need to do is easy. Cut the blue with black wire from the switch, leaving 2 inches of wire.

Then, add that wire to a ground.

That's it. They should work fine.

Actually, I think at the switch, the blue with black wire is tied to a blue wire, and both merge right at the switch.

If that's the case, then remove that merge from the switch lead (leaving the blue and blue with black connected together) and connect s ground to the switch lead that the wires were tied into.

 

[sleepycruiser]

Does anyone have a link to these? Was going to try to rebuild the wiper motor from my ‘64….but maybe this will work.

Edit: actually fixed mine. What type of grease should be used inside of these?