300ZX V6-2960cc DOHC (VG30DE) (1990)
Alignment: All Technical Service Bulletins
Alignment - Vehicle Drifts to the Right Side
Classification:
WT92-002
Section:
WHEEL & TIRE
Reference:
TECHNICAL BULLETIN NTB92-122
Models:
1990 300 ZX & TURBO
Date:
December 17, 1992
1990 300ZX DRIFTS TO ONE SIDE
This bulletin supersedes Bulletin WT90-002 (TS90-078), dated September 20, 1990, giving additional Parts Information & including the Turbo model
APPLIED MODELS:
1990 300ZX (Z32) Non-Turbo & Turbo
SERVICE INFORMATION:
Some 1990 300ZX vehicles may drift slightly to the right and require slight, but steady, steering correction to maintain a straight line - with or without
brakes applied. Use the following procedure to inspect and repair vehicles with this complaint.
INSPECTION/REPAIR PROCEDURE:
1.
Ensure that tires are properly inflated: Front, 33 PSI (cold); Rear, 36 PSI (cold).
2.
Drive vehicle on an uncrowned road, if possible, to determine direction and severity of pullling. If uncrowned road is not available, try to drive on
both sides of the crown to isolate vehicle effects from road effects.
3.
If it is determined that the vehicle consistently drifts to the same side, regardless of the road crown, perform a 4-Wheel Alignment utilizing
specifications found on the back outer cover of the 1990 300ZX Service Manual. Repair any non-conforming conditions.
4.
If the vehicle meets specifications or has been adjusted to specifications, and the vehicle still drifts, replace both front tires with new ones (see
PARTS INFORMATION section of this bulletin).
a.
Ensure that the wheels are mounted on the correct side of the vehicle and that the directional arrows on the sidewalls of the tires point in the
direction of rotation.
b.
To minimize a possible out-of-round condition when mounting new tires, ensure that the white dot on the wheel lines up with the red or white
dot on the tire. Then, balance the tires using a dynarnic balancer.
c.
Ensure that the new tires are correctly inflated: Front, 33 PSI (cold); Rear, 36 PSI (cold).
PARTS INFORMATION:
A Dunlop Tire with improved wear characteristics is available. These tires can be identified by the "DOT" number on the side of the tire:
Countermeasure DOT number information: