NICOclub

The Nissan and Infiniti enthusiast community - Repairs, modifications, resources and much more!

  • Nissan Forums
  • Infiniti Forums
  • Truck & SUV Forums
  • Datsun Forums
  • Marketplace
    • Advertise on NICOclub
    • Advertisers Directory
    • Fabricators’ Marketplace
    • Classified Ads
  • PRODUCT REVIEWS
  • TEST DRIVES
  • SERVICE MANUALS

Installing an Under Drive Lightweight Pulley on an Infiniti G35

December 10, 2009 by admin

This article will guide you in how to install a under drive lightweight pulley.

Tools needed:
3/8″ Socket Wrench with 14mm & 12mm sockets
1/2″ Socket Wrench with 19mm deep socket
Floor Jack/Jack Stands

Jack your car up. Use jack stand for safety. I only raised the passenger side of my car and it was sufficient.
Loosen the 14mm nut on both idler pulleys and loosen the tension using the 12mm socket.
Remove Belts.

While you are under there, remove the nuts and bolts holding the sway bar bracket on each side.
These are all 14mm. 1 nut and 3 bolts on each side.

With the sway bar out of the way and the belts off, now it is time to remove the crank pulley.
Use the 1/2″ socket wrench and 19mm deep socket. Trying to turn it now will just spin the crank.
(see next pic)

With the socket wrench in place lower your car back to the ground.
Remove the upper portion of the floor jack handle to use as an extension/breaker bar.
Install your breaker bar and ensure that it is tight to the ground in a straight line to break the bolt loose.

You don’t want the car to start while you turn the crank. Remove the ignition/ecu fuse.
You only want to turn the key for just half a second. We are just breaking it loose.
I used a 3/8″ socket with a 3″ extension first and broke the extension. Twice. Worked 1st time with 1/2″.

Now that the bolt is loose, you should be able to spin it the rest of the way by hand. Remove Bolt.

Getting the stock pulley off took a little coercion. I tapped it with the end of the socket wrench a few times. Because it fits so tightly in, you will need to wiggle it side to side while you pull it off.  Notice the difference in weight. The UR pulley weights about 2 pounds. My guess is the stock is around 8-10 lbs. I need to put it on a scale.

Use some WD40 to clean the area up a little. When that is dry use some white lithium grease to lube both sides of the pulley and on the crank where you will install it.

Push the new pulley on, making sure to keep the notch in the right place. Screw on the bolt, hand tight.

Now,  jack the car back up and reinstall the sway bar brackets to their proper position. Use the nuts to hold it in place while you get the bolts started.

We need to tighten down the crank bolt now, but we face the same issue as before: you can’t fully tighten because the crank spins.You need to hold the new crank pulley in place. I used some clamps like the picture. You can also use a tie down or some ring clamps if you can fit them over the sway bar. DO NOT try to use the cranking method to install, you most likely will cause serious problems.

Reinstall the belts, adjust the tension, then torque down the idler pulley nut.
Reinstall the Ignition Fuse.

Start the car to make sure the belt tension is proper and no squealing.

Lower the car back down.

You’re Done!

Originally posted by tollboothwilley

Filed Under: 350z Articles, G35-G37 Articles Tagged With: cars, G35, how to, infiniti, nico, pulley

Related posts:

Installing a SPC Rear Camber Kit and Toe Bolts on an Inifiniti G35
Installing an Under Drive Pulley for the Infiniti VQ35DE
Infiniti G35 Clutch Replacement
Do It Yourself Infiniti VQ35HR Air Filter Change
Retiming procedure for an Infiniti G35 and G37 Window and Moonroof
Changing the Brakes on an Infiniti G35
Infiniti G35: Technical Data / Specifications / Capacities
Octane ratings: what they mean to the engine in your Infiniti
350Z and G35 Dual Short Ram Intake with OEM Piping
All Infiniti Sunroof Motor Adjustment / Repair

Search NICOclub.com

Sponsor

Nissan Infiniti Online Forums Nissan 240sx technical information Nissan technical information Infiniti technical information Nissan Infiniti Road Tests and Reviews Nissan Infiniti Related Articles Nissan Infiniti Technical Information Articles Nissan Infiniti Events and Shows

Sponsor

Recent News

ITEKT Liquid Glass Nano-ceramic Windshield Coating

UrbanTransit Rolling Car Wash Stool – You need this!

More holiday goodies for your ride!

A holiday gift for your car – and your dog!

Need help with holiday shopping? Look no further!

Steps To Take After Seeing The ‘Service Engine Soon’ Light

Navigating Nissan Rogue CVT Transmission Problems & Recalls

Helpful Hacks and Tricks for Finding and Buying a new Ford Maverick

Sponsors

Sponsor



NICOclub's Nissan forums and Infiniti forums and all affiliated sites are the property of HDS Holdings, Inc. They are independent publications and are not affiliated with or endorsed by Nissan or Infiniti. Information Copyright © 2000-2023 by NICOclub, all rights reserved. Material may not be copied or reprinted without written permission.

NICOclub Sitemap | NICOclub Privacy Policy

Copyright © 2023 · NICO Club 2014 on Genesis Framework · WordPress · Log in