Does anyone know what size bolt goes here behind the PS pulley? Also with this bolt being gone, does it limit the amount of tightening i can do on that belt? its loose and as tight as i can get it (without that bolt). Should i get a new belt as well? Any help is appreciated.
89 3vze 5 speed 2wd.

Thanks guys!

 

Yes, you need that bolt to tighten the pump (the retaining arc is just flopping around). I don't know the size of that bolt, but you only have so many choices. I'm going to guess it's an M10-1.25 x 20mm, but the way to tell is to remove another bolt that "looks" about the right size and gently try it. Don't worry that you'll have a "close but no cigar" situation. Then take the bolt to any good hardware store; since you know it's metric it won't be hard to match.

My local Ace-Hardware has a small selection of Metric hardware. If you can, you want to get a JIS Flange bolt. For an M10, that has a 14mm head, which matches the rest on your truck. If you get a "plain" Metric bolt it will have a 16mm (ANSI-ISO) or 17mm (DIN) head.

 

I actually have one laying around, bought one too many.

so it’s a 10mm bolt (the head is 14mm). 1.25mm thread
the threaded part is 22mm long, the overall length with head is 30mm

its a fairly hard bolt, grade 8. It also has a lock washer combined with a larger flat washer. As I remember it was fairly inexpensive from the online toyota dealer I order from

 

Bolt length is measured from the bottom of the head (toward the threaded part) (unless it's a flat head bolt with a tapered bottom to fit into a countersink). So it sounds like you have a JIS M10-1.25 x 22.

 

Tough bolt to R&R behind the pulley like that.
Proper length bolt needs the pulley off to install.

 

The 22re has a similar bolt, once you get the first 10mm into the mount while the pump isn't in place you can thread it.