rear window operation

[chrismears]

Hi. I'm still learning my way through the intricacies of my first
runner. I have a question about the operation of the rear power
tailgate window operation.

Our truck is a 1991 SR5 (4spd, 4cyl)

The window lowers beautifully and smoothly. Raising the thing however
is a completely different story.

It seems to raise in steps, about 2" per attempt. It will raise
(close?) to almost 4" from the top of the opening and then it stops.
I am thinking that perhaps the track that the window runs on is
getting gummed up with age and perhaps a oiling and cleaning is in
order.

Should the window raise in one smooth operation?

Does anyone have an exploded diagram for this window mechanism to give
me some guidance for what to expect when I get the 'gate open?

I'm fairly mechanically inclined, but very very new to Toyota trucks
(that said, I am having a complete blast with this truck. This week
is our one month anniversary since buying it and I love it!)

Thanks for the help, I really appreciate it.

Chris Mears
Charlottetown, PEI, Canada
1991 Toyota SR5 4Runner 4cyl, 4spd
1988 Volvo 245GL B230F
1980 Mercedes 300SD

 

[r1burden]

Rear Winodw

My windows is one smooth motion if it is over 60 degrees outside
if the temp drops down my rear window is smooth half way up then you have to help it with a little palm pressue, so yes it should be one smooth motion, make sure there is no dirt or debris in the track

 

[rustyrazor]

I've got a '90 and my rear window doesn't go up or down. It sort of tilts a tiny bit when I hit the down button.

I'm going to take it apart next week.

Any suggestions are appreciated.

 

[Don'tKnowJack]

I have a 90 as well and the rear window rolls down from the out side with some down ward pressure, but it wont come up at all. In order to get it back up I turn the key with one had and pull really hard up on the other. I would love to know what to do to get this fixed as well. I am also new to the toyota side. Took the cover off and started looking around trying to figure out my next step but it is very cluttered and couldnt really tell where the problem was.

 

[P6tu]

Hello,I'm new here and I just had to register to help you out a bit.

I had the rear window problem too and there is a little motor running the window up and down.It has a small cogwheel that moves a big half-cogwheel.It is a 4Runner problem that when the window is used very often (ofcourse it is,because you like to put things in from the rear not from the front ) it worns out.It only needs a millimetre or two to worn out to stop working correctly.The small cogwheels teeth start to skip and it causes deforming of that big half-cogfheel and that is it.You have to get a helping hand to open and close the window.

In my country the new mechanism (without the little motor) costs about 180$ and the little motor itself is almost twice as much (350$) so for me it was little bit too expencive and I just took the whole thing apart and welded the cogwheels over and filed it in shape.

PS! You can only take the whole thing off the hatch in one piece.There were four bolts holding it.You can't unmount the mechanism in the backhatch.And if you haven't done welding before or aren't good enaugh,then don't do it.You'll make things only worse.

I hope you understood my text.My english is poor but I did my best.

 

[rustyrazor]

Working on the back window

I took my back window apart on the weekend and I managed to get it to go up and down again. Before it wouldn't even move.

Here is my take on what happened to my rear window:

The outer seal started to leak letting water into the tailgate and onto the power window mechanical parts.

Of course when you get steel parts wet they rust and all the rust on these parts create lots of extra friction. The previous owner told me that he had to push up on the window with his hand to get it all the way up before it quit working altogether.

The worst part on mine is the tracks that are mounted to the bottom of the window. They're made from a fairly heavy gauge material so once I clean the rust off they should be good.

I also noticed that the gear on the motor would skip, but only when the window was all the way at the top.

At the time I sprayed all the moving parts down with silicon lubricant and that was enough to get the window moving again.

I'm going to take the whole thing apart, hopefully within the week, to do a thorough job cleaning it up. I'll take some pictures and post them when I do.

 

[Don'tKnowJack]

that would be great maybe even do a DYI on it as well. I wish there was a way to get the window to roll up and down with the tailgate open. I tried looking at it the other day and one being upside down wasnt that nice and being in the car that was over 100 degrees wsant to fun either. When I tried looking at mine I really couldnt get to where I could see anything because of all the cross members and frame of the door. All I could really see was the motor and the gears, the rest of the stuff was hidden.

 

[rustyrazor]

I won't be working on the window this week.

The 4runner developed a big oil leak somewhere around the front of the engine so I figured I would pull the timing cover off and do the gaskets. This has really turned into a big job. Getting the timimg cover off was a pain. Once off I found a broken timing chain guide, so I'm doing the whole timing set, once it comes in.

I wonder if there's a thread for timing chain replacements. If not I can start one up.

Once I finish all of this I'll tackle the rear window again.

 

[brick privy]

that would be great maybe even do a DYI on it as well. I wish there was a way to get the window to roll up and down with the tailgate open. I tried looking at it the other day and one being upside down wasnt that nice and being in the car that was over 100 degrees wsant to fun either. When I tried looking at mine I really couldnt get to where I could see anything because of all the cross members and frame of the door. All I could really see was the motor and the gears, the rest of the stuff was hidden.

On my '84, I got the window to come out by latching the tailgate latches with a screwdriver. Once the latches were latched, and the tailgate lock was down, the glass rolled right out. Of course you have to be ready to catch it.

 

[Lofty]

HI all - yay my first post here!

Anyways - I've moved up from Honda's to Toyota's .

I just bought a 95. 4runner.

you guessed it rear window problems.

been through the searches and here's where I'm stuck.

Window moves about 1/4 inch.

here's what I've done

councel Switch has contunity.
rear key switch seized.(need to replace)
relay sends 13v to motor when switch pressed (up and down)
direct 12v from battery to motor - window moves about 1/4".

So Now I need to remove motor to replace it (and clean up the window mechnism)

I've tried to get the motor out - but it seems stuck. How much force can I use to get it out or what tricks can I do?

Lofty

 

[markdifferent]

i have a 1990, and have had to pull out the back glass as well. the thing to remember is never allow the spring, well its more of a coil, but anyways dont let it come un done. other then that the glass will slide right up after you loosen and slide the bottom parts over. dont use force, there is 1 and only 1 way it should and will easily be done. toy with it if you cant find it and you will se it in a few seconds. also i have heard of the teeth getting rusted and worn down. this would cause the window shift as it only needs to be off by 1 tooth to create big problems. also if you are wanting the motor to work faster dont spray the metal with wd40 like i did. it worked alot faster for 5 min, then quit. i opted to buy a new motor, as the used ones i found werent in good shape. my saving grace is my friend owns a large salvage yard and rarely charges me.

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