Daytona L4-135 2.2L SOHC (1984)
Wheel Bearing: Technical Service Bulletins
Front Hub/Knuckle Bearing - Looseness
Models
All 1984 Front Wheel Drive Models Except "M" & "Z" Models
Subject
Front Hub/Knuckle Bearing Looseness
Index
SUSPENSION
Date February 27, 1984
No.
02-03-84
P-690-C
A design change to a larger front hub/knuckle bearing was incorporated for the 1984 models indicated.
There are two designs or types of this bearing being used in production, a tapered roller design and a ball bearing design. Due to the production process
it is possible to have either or both types of bearings on the same vehicle. No functional problems result from a mixed bearing condition; however, a
perceived service problem may arise as a result of the different characteristics of these bearings.
The tapered roller designed bearing will have more internal clearance (free play) than the ball design. This free play (looseness) may be observed when
the wheels are off the ground and individually rocked by hand at the 6 and 12 o'clock position.
If there is movement noted on one or both wheels but no bearing noise, measure the movement at the wheel outer rim diameter with a dial indicator. The
maximum allowable movement (looseness) on a 13 inch wheel at the rim lip is 0.020 inch, on a 14 inch wheel 0.023 inch, and 0.025 inch on a 15 inch
wheel. Do not replace bearing(s) for looseness if the movement is within these tolerances.
When the measurement is made, the load applied should not induce deflection of the wheel itself but only reflect the free play in the bearing. A dial
indicator mounted to the lower control arm is the recommended method of measurement.
In the event that the measured free play is over the maximum specification, or bearing noise is apparent, the bearing should be replaced using the 1984
service manual procedure.
CAUTION:
DO NOT OVERTORQUE THE AXLE RETAINING NUT BEYOND THE 180 FOOT POUNDS TORQUE TO MINIMIZE
BEARING FREE PLAY.
POLICY:
Information only
