Affected vehicles:
2008-’12 Nissan 370Z 3.7L
2003-’07 Nissan 350Z 3.5L
2002-’06 Nissan Altima, Maxima 3.5L
2005-’12 Nissan Xterra, Frontier 4.0L
2003-’07 Infiniti G35 3.5L
2008-’12 Infiniti G37 3.7L
Today’s vehicles are becoming more and more complex to service, so proper procedures are very important to follow when making repairs. This is especially true when working on Infiniti and Nissan dual mass flywheels.
The vehicles listed above have a crankshaft tone ring built into the flywheel. The dual mass flywheel is not indexed on the crankshaft and can be installed different ways.
When installed incorrectly, the vehicle may not start, have a check engine light and the engine will not rev past 2,000 rpm.
When removing a dual mass flywheel from the vehicles listed above, it’s recommended to make your own indexing marks on the flywheel and crankshaft. When installing the new flywheel, transfer your marks from the old flywheel to the new flywheel to ease installation and assure proper indexing.
If you’ve already removed the flywheel and did not make any indexing marks, follow this procedure for proper installation:
- With the flywheel removed, look for the alignment dowel pinhole on the end of the crankshaft.
- Find the same alignment dowel pinhole on the new flywheel. This can be done by finding the locating hole and notch on the front side of the flywheel (see Fig. 2).
When you’ve located the notch and hole on the front side, flip the flywheel over and find the same hole that goes all the way through the backside. Then look at Figs. 1-3 and find the dowel pinhole. - When both have been located, align the two holes and torque the flywheel to the proper specifications.
- See Figs. 1-3 to aid in locating the correct dowel pinholes.
Courtesy of Schaeffler Automotive Aftermarket, manufacturer of LuK Clutches.