Help: Replacing alternator 1st time

[deeke777]

Hi all,

I'm replacing the alternator in my 1996 300ZX non-turbo automatic. This is the first time I've done something like this. I had a few questions:

• How important is it to measure belt deflection/tension when putting on new belts? Should I buy a tool to measure this?

Also I noticed the other belts aren't in great shape.

• Does anyone have sizing for the power steering, AC, and alternator belts?

I'm wondering if I can grab a few cheap ones like those shown in a Build Theory video, or if I should just buy the more expensive kits from ConceptZ or Z1 Motorsports.

[itsa300zx]

You have an auto (transmission line to the rad) so I'm not sure if you can just lift the rad (as shown in you tube). You will need to unbolt the sway bar to get the alt out.

The belts you show are sized for use with an underdrive pulley I believe. Gates and Bando are quality brands, I use them all the time.

PS OEM size is 3 rib 36.5"

AC OEM size 4 rib 38.2"

ALT/WP size 4 rib 40"

Tighten the belts are important as over doing it will wear out the pulley bearings prematurely.
I just gauge it by applying approx 20 lbs at the specified points and look for a 3/8"-1/2" deflection.

Here is a good link with info:

https://conceptzperformance.com/wiki/in ... Drive_Belt