Grand Marquis V8-281 4.6L SOHC (1992)
Suspension Spring ( Coil / Leaf ): All Technical Service Bulletins
Body and frame - Vehicle Leans to Left
Article No.
93-1-1
01/05/93
SUSPENSION - VEHICLE LEAN LEFT - ALL MODELS EXCEPT POLICE
FORD:
1992 CROWN VICTORIA
LINCOLN-MERCURY:
1992 GRAND MARQUIS
This TSB article is being republished in its entirety to reflect corrections in the Ford/Mercury Front Spring Chart. The D9AZ-5310-S front spring
load/rate was changed to 2340/410 and the spring tag code for the F2AZ-6310-C front spring was changed to 0 A CGI.
ISSUE:
A lean left condition may be present on some 1992 Crown Victoria/Grand Marquis vehicles. This does not include Police units. The lean may be caused
by vehicle weight side-to-side differences from component packaging, body shell and frame tolerances.
ACTION:
If service is required, use the following procedure to check and, if necessary, to install body mount shims to level the vehicle.
CHECKING PROCEDURE
To restore the vehicle to a level condition at the fender wheel lip openings, use the following procedure to check and correct service leans with
differences in excess of 0.5" (12.7 mm) side-to-side.
1.
Check the vehicle interior and trunk for any significant baggage/tool boxes, etc., and remove them before proceeding with the lean analysis.
2.
Confirm that the vehicle is assembled with the proper front spring codes. Refer to the 1992 Ford/Mercury Front Spring Chart after Step 7 in this
TSB article.
3.
Place the vehicle on a level surface and check tire pressures to ensure that the left front/right front and left rear/right rear are identical.
4.
On vehicles equipped with air suspension (Opt. Air/Trailer Tow III/Handling Package) turn the engine OFF, but leave the ignition in the ON
position and the driver's door open. Proceed as follows:
a.
Load the rear bumper until the air suspension compressor cycles for at least 30 seconds.
b.
Close the driver's door and let the vehicle vent to the "Top of Trim" position (approximately 10 seconds).
c.
If the air suspension does not function properly, perform service diagnostics as outlined in the 1992 Crown Victoria/Grand Marquis Service
Manual, Section 14-40.
5.
On vehicles equipped with standard steel coil springs, ensure rear springs are the same part number and properly nested on frame rose bud and
axle collar.
NOTE:
IF FRONT OR REAR SUSPENSION SPRINGS ARE IMPROPERLY INSTALLED OR ARE THE INCORRECT PART NUMBER, PERFORM
SERVICE REPAIRS AS OUTLINED IN THE 1992 CROWN VICTORIA/GRAND MARQUIS SERVICE MANUAL, SECTIONS 04-01 AND 04-02.
6.
Equalize the suspension by shaking the vehicle side-to-side from the "B" pillar joint before taking wheel lip measurements, Figure 1.
7.
Determine the difference in the front and rear wheel lip measurements by subtracting the left side measurement from the right hand side at both the
front and rear locations.
