F 250 2WD Pickup V8-7.3L DSL (1990)
Shifter M/T: Customer Interest
M/T Transmission Shift Lever - Buzz/Vibration
Article No.
91-10-14
5/15/91
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NOISE/VIBRATION - SHIFT LEVER - M50D TRANSMISSION
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TRANSMISSION - M50D - SHIFT LEVER BUZZ/VIBRATION
LIGHT TRUCK:
1988-91 BRONCO, F-150, F-250
ISSUE:
Transmission shift lever buzz, may be noticed in overdrive or 4th gear after the vehicle has obtained normal operation temperatures and is
driven on a smooth road surface at normal highway speeds of 55 MPH (88Km/h). The tone and intensity of this condition are considerably
less when observed in 4th gear than in overdrive.
ACTION:
Replace the transmission top cover assembly with the new top cover kit assembly. Refer to the following procedure for diagnosis and
service details.
INSPECTION PROCEDURE:
1. Drive the vehicle to warm the transmission oil to approximately 125~F (52~) - about ten miles at highway speeds when the outside temperature is at
the freezing point.
2. On a smooth road surface, drive the vehicle at approximately 55 MPH (88 Km/h) in overdrive to verify shift lever buzz.
3. If shift lever buzz is observed, lightly push to the right (passenger side) to determine if the buzz is eliminated.
4. If the buzzing noise is eliminated, refer to the following repair procedures.
NOTE:
IF THIS TEST DOES NOT ELIMINATE THE BUZZ, DO NOT REPAIR WITH THIS PROCEDURE, IT WILL NOT CORRECT THE
CONCERN, REFER TO THE LIGHT TRUCK SHOP MANUAL FOR FURTHER CONCERN DEFINITION.
REPAIR PROCEDURE
1. Remove the old transmission top cover assembly.
2. Install the new transmission top cover assembly.
NOTE:
THE TRANSMISSION DOES NOT HAVE TO BE REMOVED FROM VEHICLE. ACCESS IS GAINED BY REMOVING THE SHIFT
LEVER AND SHIFT BOOT AS AN ASSEMBLY. PULL BACK THE FLOOR COVERING AND REMOVE TRANSMISSION OPENING
COVER PLATE.
CAUTION: CARE SHOULD BE TAKEN TO INSURE THAT NO DIRT ENTERS THE TRANSMISSION WHILE THE TOP COVER IS OFF.
PART NUMBER
PART NAME
CLASS
F0TZ-7C391-J
Transmission Top Cover
Assembly
C
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION
DESCRIPTION
TIME
911014A
Replace Transmission Top
1.2 Hr.
Cover Assembly
DEALER CODING
BASIC PART NO.
CONDITION CODE
7222
56
OASIS CODES:
505200, 703300
