I have a blueprint of this G52 trans, but all the blueprints I find are old and fuzzy. Which gear is this? My guess is its a part of the actual input shaft...is that true? But also, what exact gear is it?

Mahalo

 

and if you open the pic, a red arrow points to the gear...

 

Yes, it is part of the input shaft. As such, it is also 4th gear. Since selecting 4th gear connects the input shaft directly to the output shaft without any torque multiplication/gear speed ratio reduction through the counter shaft and main shaft gears. The lower/higher/main shaft gears(1st, 2nd, 3rd, or 5th) also use the input shaft/4th gear via its driving the counter shaft(and/or the main/output shaft when the main shaft gears are selected). Thus allowing the input shaft/4th gear speed ratio to be reduced(to 1st, 2nd, or 3rd) and torque output(through the main/output shaft) to be multiplied. Or in the case of 5th gear/overdrive, for the input shaft/4th gear ratio speed to be increased/multiplied by the counter shaft and main/output shaft 5th gears, while torque output(through the main/output shaft) is reduced.

 

Look here:
http://www.ncttora.com/fsm/87-4Runner/85-87_G52.pdf

Here are all of the FSMs:
http://www.ncttora.com/fsm/index.html

 

wow....WOW!!! Thats more info than I expected to get on here and so fast! Thanks guys! That video rocks! & the links will help out a ton!

MAHALO !!!

 

Ok, well I found one place that sells the input shaft and Im guessing the gear comes mated to it? Also, there are 2 different versions, no idea what the difference is??? Th link...

http://www.allstategear.com/g52.htm

Anywhere else I can find this part?

 

1. I would think so, but I'm not totally sure that's the case. It would be if you bought the input shaft assembly from Toyota.

2. I'm not sure if the input shaft is what they are calling G52-16, and the gear that gets pressed onto it is G52-16B. Or if they mean that they're selling 2 different input shaft assemblies. Since there appears to be atleast three different OEM part numbers for the input shaft.

33301-28030 is for 08/1983-12/1983
33301-28011 is for 01/1984-01/1988
33301-28021 for 08/1987-01/1988

And I would have no clue what the difference between any of them would be.

However, they do happen to mention that G52-16B has 32 teeth(on the gear presumably?), and that it has a 1 id mark. So that must signify something about the difference between G52-16 & G52-16B. What that difference is...I don't know...for sure.

3. Some of the online OEM parts distributors still have them. Those are the part numbers above. So figure out which one you have and search for it by part number.

4. Why are you replacing it? If you don't mind me asking...

 

I got a G52, that I had to swap out for a W56B. The ONLY gear that wasnt squealing was 4th. If you need something out of it, let me know. I will disassemble it and you can have it if you pay for shipping. Im in Georgia, by the way.

And if you're in the Pacific, that may not help you much... lol

 

@MudHippy, thanks for the part numbers! I need to replace it because 2 of the teeth are halfway broken off.

@rokblok, I'd be insanely stoked for a input shaft w/ the gear on it if its got all the teeth still there. You can still use the flatrate boxes to ship to Hawaii for no extra charge and an input shaft would def fit in a small or medium size. I wouldn't mind throwing in a few extra bucks as well so you can enjoy a cold one, pizza, whatever!

 

Holy specifics, Love it.

 

Ugh!!!! I'm an idiot. I thought that if I went by my VIN, the trans would be what it said to be, a G52. Not thinking about how old the truck is and the huge possibility its not the original trans! I just found out you can ID it by the input shaft bearing, according to Marlin, it's a g54!!!! Will the G52 input shaft still work? I'm guessing not if the bearing is different...so sad right now! I already bought the g52 marlin rebuild kit, still unopened atleast.

 

Let me kno bruddah... I will have access to it in a week or so and I can disassemble it all and take dimensions to see if it'll work for you.