ShaunKris

same here on a 1991 with ADD

ShaunKris

yes, I just did my 1991 4R with ADD. swap straight across, I posted a couple vids in response to an old post with rebuild issues. Between the two they pretty much cover everything for the 2nd Gen 4R swap/repack.

ShaunKris

The cover bolts are soft, they don't take any torque other than holding them on.

Krate

Mornin' All
Krate here in Eastern Wva. just been lurkin' for a few weeks.
Bought My first 4runner 3.0 auto ADD about a month ago just in time for the Last Snowstorm of year I hope.
I have a few questions concerning My ADD It will not unlock? to 2WD Left front tire off ground
try to spin wheel diff. no free wheeling. IT was in Park will this make difference. I chose leftside cause
I thought this side would freewheel... I'm I correct?? Do I need to take anything apart Or Do I just install lock-out hubs??
Oh. Which Brand / type of hubs would Y'all recommend
Krate

delmert

the year of your vehicle will help.... but here's some more info on them
http://www.4x4wire.com/toyota/tech/add/

Krate

'95 My good Man sorry proofing the post missed the year.

Demert I read the topic you suggested good stuff nuff said, Thanks\

Rotorhead89

I've been rebuilding the entire steering and suspension systems on a 91 pickup that I purchased from a guy who did not treat it well. While rebuilding the hubs, I noticed that one of them had a hub ring that has the wrong internal diameter. It allows for no less than 1/8 of an inch of play between the inside of the ring and the inner hub... this is just... wrong.

I think the guy might have rebuilt it before with parts that he had laying around and did not care if it was correct, though I have a hard time seeing how he even assembled it.

I want to get the appropriate part, ideally without picking up an entirely new hub... I just need a new ring and spacers, and wouldn't mind refreshing the snap rings and seals while I'm at it. Do you guys have any idea where I can find internal parts for these things? I know one option is the junkyard, but other than that and calling up Aisin, I can't seem to find any info online.

Alex Gosselin

Alright guys bringing this thread back. I have a pretty loud sound coming out of my front driver side wheel assembly and after a lot time and effort changing pretty much all the component I tho could
be wrong (spindle bushing, CV, Wheel bearing,etc..) I'm thinking of swapping for manual hub see if that works.
True or False.
If all my 4wd component works I should be able to just swap my ADD hub with manual hub and that will prevent the CV from turning in 2wd with the hub unlock. And then you just lock them in and you have them turning in 4wd. I'm I right ?

mkivbren

This seems to be the catch all thread for the Aisin's and I haven't seen this addressed- The aluminum hub body itself, is it clear coated? It's held up very well, I'm sure it's forged, but Id like to try to polish out some brake dust pitting while the outer ring and dials are at the powdercoater. Anyone know if they're clear coated? Given the hammer marks from tapping them off I don't believe they are coated..

Also, fyi, i've been able to get replacement internal parts from my dealer.

clok

iTrader: (2)

Anyone know the bore size for these manual locking hubs ? Wondering if a wheel with a 106.1mm center bore will fit over my manual locking hubs on my 1st gen runner ?

4Crawler

iTrader: (3)

Looks to be a few mm too small:
https://www.4crawler.com/4x4/4R_Tech...l#Wheels/Tires

Stock wheels: Center bore diameter: 4-3/8" (111mm) ID
To fit over front hubs which are approx. 4-1/4" (108mm) OD

clok

iTrader: (2)

thank you for the info I’m currently running 2003 oem 4Runner wheels and looked up the bore size for those wheels and to my luck they are 106.1 bore size so it looks like the the wheels I’m after will work with the 106.1 bore size , if you notice the link says approx. 108mm which is obviously wrong as it’s actually 106mm for the front hubs
here are the specs for the 2003 oem 4Runner wheels I’m currently running

Toyota 4Runner 2003 4.0

– Generation: IV [2002 .. 2009]
– Market: USDM
– Power: 245 hp | 183 kW | 249 PS
– Engine: 4.0L, V6, Petrol
– Center Bore: 106.1 mm
– PCD: 6x139.7 (6x5.5)

clok

iTrader: (2)

2003 oem 4Runner wheels

4Crawler

iTrader: (3)

OK, thanks for the information, will add that to the web page, I just estimated that number based on a rough inch measurement. I've never had a chance to measure the later model wheels, which are hub-centric and thus have the smaller center bore to tightly fit over the hubs. The earlier trucks were set up for lug-centric wheels with and oversized center bore.

clok

iTrader: (2)

yes your absolutely right it’s a very tight fit with zero room for margin but they do fit without any modifications, again thank you for your input.

kjtgh

Hi, I look forward to all the useful information on here. I hope you are too.

chad332211

Lots of good information on here!