Explorer 4WD V6-4.0L VIN E (1999)
Synchronizer Hub: All Technical Service Bulletins
M/T - M5OD Buzzing/Grinding Noise
Article No.
00-3-6
02/07/00
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NOISE - "BUZZING" AND/OR "GRINDING" DURING 2-3 SHIFT - VEHICLES EQUIPPED WITH M5OD TRANSMISSION AND BUILT
BEFORE 11/1/1999
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TRANSMISSION - M5OD - "BUZZING" AND/OR "GRINDING" NOISE DURING 2-3 SHIFT - VEHICLES EQUIPPED WITH M5OD
TRANSMISSION AND BUILT BEFORE 11/1/1999
FORD:
1998-2000 EXPLORER, RANGER
ISSUE
Some vehicles may exhibit a "buzzing" and/or "grinding" noise or a "notchy" feeling during the 2-3 upshift. This may be caused by the 3-4 synchronizer.
ACTION
Replace the 3-4 synchronizer assembly. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
First, verify that vehicle exhibits a buzzing/grinding/notchy feeling/sensation during 2-3 upshift and determine it your transmission serial number is
greater than the serial number listed below. If the vehicle does NOT exhibit a buzzing/grinding/notchy feeling/sensation and is greater than the serial
number listed on the chart below, proceed with other appropriate diagnostics for repair. Reference the appropriate Workshop Manual for assistance.
NOTE
ALL TRANSMISSIONS WITH SERIAL NUMBERS GREATER THAN THE ONES LISTED BELOW
ARE NOT AFFECTED. USE THE CHART BELOW AND THE SAMPLE TAG INFORMATION TO ASSIST IN DETERMINING IF THIS FIX IS
APPLICABLE. THE TRANSMISSION SERIAL NUMBER IS LOCATED ON THE TAG ATTACHED TO THE LEFT SIDE OF THE
TRANSMISSION.
TRANSMISSION SERIAL NUMBER INFORMATION
Transmission
Application Tag
Transmission Serial Number
2.5L I-4 4X2
F87A - AB
less than 0629756
3.0L V-6 4X2
F87A - CA
less than 0628220
3.0L V-6 4X4
F87A - DA
less than D624514
4.0L V-6 4X2
F87A - EA
less than D639401
4.0L V-6 4X4
FB7A - FA
less than 0627480
1.
Drain all fluid from the transmission and remove the transmission following the procedure outlined in the appropriate Workshop Manual.
2.
Disassemble the transmission following the procedure outlined in the appropriate Workshop Manual.
3.
Inspect the brass blocking rings for any damage. If they are not damaged, reuse on reassembly.
4.
Replace the synchronizer. Additionally, replace brass blocking rings if necessary.
5.
Reassemble the transmission following the procedure outlined in the appropriate Workshop Manual.
6.
Reinstall the transmission and fill with new fluid. Test drive to verify repair.
NOTE
AFTER THE REPAIR, THE TRANSMISSION MAY FEEL STIFF, ESPECIALLY IF THE BRASS BLOCKING RINGS WERE REPLACED.
THIS WILL GO AWAY AFTER DRIVING THE VEHICLE FOR SEVERAL KILOMETERS/MILES, AS THE NEW BLOCKING RINGS NEED
TIME TO RESEAT AGAINST THE GEAR CONE.
PART NUMBER
PART NAME
F2TZ-7124-AB
Synchronizer Assembly (2.5L And 3.0L)
F2TZ-7124-CA
Synchronizer Assembly (4.0L)
