AX-15 Rebuild?

JeepHD · 03-24-2008, 04:23 PM

How hard is it to pull apart an AX-15 for a rebuild, basically new synchros and if anything else looks worn? I have done the old T-150s and T-176s before, just not the newer ones. The tranny really shifts pretty good, just shifts hard when cold.

I have an NV3550 that I had put in in it's place and I ma just not happy with it. Sounds like a lot noise from the front bearing and it pops out of 3rd fairly easily, so I thought I would freshen the AX-15 up a bit and swap it back in.

4RunnerAdam · 03-24-2008, 07:19 PM

Here's a rebuild on the sister tranny, the R151

http://www.4x4wire.com/toyota/tech/r151f/

If it just shifts hard when cold, I'd try switching over to some synthetic oil like amsoil or redline. I've heard a lot of sucess stories about these oils. I need to change my R150 over too since it does shift hard when cold.

KargoMaster · 03-25-2008, 01:53 PM

If I had to rebuild one... I would do the NV3550... they seem to be quite a bit stronger, without the known weeknesses of the AX-15... but that's just me.

Gearbox is a gearbox... can't see how it could be dramatically different.

JeepHD · 03-25-2008, 02:21 PM

Yeah, I don't know why, but I liked shifting the ax-15 better. I know the 3550 is considered the better tranny.

Quote:

Originally Posted by KargoMaster

If I had to rebuild one... I would do the NV3550... they seem to be quite a bit stronger, without the known weeknesses of the AX-15... but that's just me.

Gearbox is a gearbox... can't see how it could be dramatically different.

sarge · 03-26-2008, 01:07 AM

The down side to the 3550 is that the aftermarket has stopped producing parts and the only place to get them now is through the stealership , so the price is going to be way high.

03-24-2008, 04:23 PM	#1
JeepHD www.buckeyejeepers.com Join Date: Apr 2007 Location: Houston, OH 45333 Posts: 276	AX-15 Rebuild? How hard is it to pull apart an AX-15 for a rebuild, basically new synchros and if anything else looks worn? I have done the old T-150s and T-176s before, just not the newer ones. The tranny really shifts pretty good, just shifts hard when cold. I have an NV3550 that I had put in in it's place and I ma just not happy with it. Sounds like a lot noise from the front bearing and it pops out of 3rd fairly easily, so I thought I would freshen the AX-15 up a bit and swap it back in. __________________ 1994 YJ, 4.0, 5 speed. *2006 Dodge 2500 Cummins, 4x4 Auto,Quad cab, LongBed, Tekonsha Prodigy(Tow Rig)

03-25-2008, 01:53 PM	#3
KargoMaster Cleaning off the rust... Join Date: Jan 2007 Location: Cincinnati, OH Posts: 1,009	If I had to rebuild one... I would do the NV3550... they seem to be quite a bit stronger, without the known weeknesses of the AX-15... but that's just me. Gearbox is a gearbox... can't see how it could be dramatically different. __________________ brad 5.0L \| 435 \| 203 \| 300 \| 4.10 \| 39.5 Buildup BACK underway...

03-24-2008, 07:19 PM	#2
4RunnerAdam Join Date: Apr 2007 Location: near eastgate mall Posts: 171	Here's a rebuild on the sister tranny, the R151 http://www.4x4wire.com/toyota/tech/r151f/ If it just shifts hard when cold, I'd try switching over to some synthetic oil like amsoil or redline. I've heard a lot of sucess stories about these oils. I need to change my R150 over too since it does shift hard when cold.

03-26-2008, 01:07 AM	#5
sarge Pure Bacon Join Date: Jan 2007 Location: Trenton, Oh Posts: 1,098	The down side to the 3550 is that the aftermarket has stopped producing parts and the only place to get them now is through the stealership , so the price is going to be way high.