The zirc failed on this fitting, the parts stores don’t carry a match, closest I can find is an m6, same size but different threads, do I need to modify or is it possible to buy this part? It is the rear grease fitting for a main axle on a 91 Toyota 4by4

 

If your local auto parts store doesn't carry the grease-zerts you need, they're available on-line. Try the McMaster-Carr catalog. They seems to have just about everything. I think I got a huge number of zerts from there, for my 4Runner.
They don't come with them from the factory. They only have small bolts in all the holes. I pulled them all. It's a lot easier to use zerts to lube the truck up than trying to plug the hole up with the rubber tip grease guns come with.
Anywho, just do a little searching on-line. You'll find what you need.
Pat☺

 

Thanks Pat, I will poke around

 

So yeah, the McMaster Carr looks like they may have the fitting, so next question, how do I find out what size this fitting is? I assume there is a gauge of some sort.
Thank you
Getting closer

 

Decent ruler or/and thread gauge..


OK I have to ask, what am I looking at in that photo? It's not ringing any bells.

 

I have a couple tap-n-die sets. Quite extensive, really. Got them from Harbour Freight for what I thought were very reasonable prices. Anywho, I use those to figure out thread count, pitch, etc. Since I know that Toyota uses metric nuts, bolts, and so on, that eliminates half the tap-n-die set
When I pulled the first bolt, I found the die that fit it best, IE: ran up and down the threads snugly, but not restricted in any way, and use it's numbers to order the zerts. The local auto parts store should be able to do the same thing, or somehow figure out the information you need to get the zerts ordered from MC. They should be experienced in doing this, as they have to ident bolts, nuts, fittings, and so forth quite often. People bring in a part they damaged, like a bolt they stripped or whatever, and the store usually has to figure out all the thread info for them, so they can get the right replacement.

Or perhaps the dealership has the information on the zert, or bolt, that Toyota calls out for that particular location. I've had to go to my local Toyota dealership a few times for parts over the years I've been in this town, and I can warn you, you may need to help guide the Parts guy in just exactly what and where the part you're looking for can be found. I had to point to the COR I needed once, for example. I told him what truck I had and the first thing he said was "REALLY??? I've never looked up anything for something that old!". I knew I was in for a long day.
I had to guide him to just exactly where in the truck it was, and what it's full name was, so he could find it and order it for me. Took a while searching through the computer for just where it was. The correct size crush washers for my cold start injector was even worse. He kept trying to get me the washers etc for the regular injectors. Anywho, whole point is, these trucks can be quite a bit older than the local parts guys, so they may well have no experience with them. Be warned.

Hope this helps some...
Pat☺

 

I have an 89 parts truck, should have that part, yeah? exactly where did you get from? would love to help out

 

thanks

 

Thanks Pat, I went to 4 auto parts stores on the Island and they just have some pre packaged fittings, seems like the fitting Inneed is a m6 except the threads are different, I will post a pic

 

The fitting I need is on the right, the fitting on the left is an m6 that does not work

The press in female fitting is on the top

 

Thanks bro, I appreciate the offer, I should be able to find it new, so are you on hilo side ?

 

it it is the rear grease fitting for the main drive axle