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EricFromCT, ASE Certified Technician
Category: Car
Satisfied Customers: 3325
Experience:  ASE Master certified L1, L2, Diesel Certified 16 years experience
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I need to know where, I'm trying to replace my alternator,

This answer was rated:

I need to know where
JA: What is the model/year of your Lexus?
Customer: I'm trying to replace my alternator
JA: Have you done a battery test? Has there been any change in headlight brightness?
Customer: Yes
JA: What year is your Lexus?
Customer: 2000 gs400
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: I'm trying to find the bolt to loosen the belt

Hi. THere is no bolt to loosen the belt. There is an automatic tensioner. It is to the left hand side and up from the crank pulley. You put a wrench on the nut for the pulley and rotate it clockwise.

Customer: replied 10 days ago.
What size nut

I dont recall off hand but I think it is a 17mm

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