Fulltext TSBs

Technical Service Bulletins

TSB
97-11-21
  • NOISE – FIRST GEAR “TICKING” NOISE – E4OD TRANSMISSIONS – 4X4 VEHICLES WITH 5.4L ENGINE AND TRANSMISSION BUILT PRIOR TO 3/11/97 AND 4X2 VEHICLES WITH TRANSMISSION BUILT PRIOR TO 4/8/97 – SERVICE TIP
  • E4OD – FIRST GEAR “TICKING” NOISE – 4X4 VEHICLES WITH 5.4L ENGINE AND TRANSMISSION BUILT PRIOR TO 3/11/97 AND 4X2 VEHICLES WITH TRANSMISSION BUILT PRIOR TO 4/8/97 – SERVICE TIP
Publication Date: MAY 27, 1997

LIGHT TRUCK:
1997 EXPEDITION, F-150, F-250

ISSUE:

A “ticking” noise during first gear operation may be heard on some vehicles. This may be caused by the transmission fluid transmitting the load from the intermediate clutch friction plates, which are rotating, to the intermediate clutch steel separating plates, which are non-rotating. This transfer of load produces a ticking noise as the steel separating plates make contact with the case.

ACTION:

Follow the Service Procedure below to verify the concern. If a ticking noise is verified, replace the Intermediate Clutch Friction Plates (F75Z-7B164-BA, 3 required). These new friction plates have a revised groove pattern which changes the fluid distribution and load between the clutch plates.

SERVICE PROCEDURE

To Verify Concern

  1. Drive vehicle in manual first gear with light throttle position from 0 to 48 km/h (0 to 30 mph) and confirm the ticking noise.
  2. When the ticking noise is confirmed, shift the gearshift into manual second gear.
  3. If the ticking noise goes away in manual second gear, replace the intermediate clutch friction plates using service part number F75Z-7B164-BA (3 required).

    Follow the normal Service Procedure outlined in the appropriate model 1997 Workshop Manual/Transmission Reference Manual.

    NOTE:IF THE TICKING NOISE DOES NOT GO AWAY IN MANUAL SECOND GEAR, THEN THE INTERMEDIATE CLUTCH FRICTION PLATES ARE NOT THE CAUSE. DO NOT REPLACE THE FRICTION PLATES. REFER TO THE APPROPRIATE MODEL 1997 WORKSHOP MANUAL IN THE NOISE, VIBRATION, HARSHNESS SECTION (100-04) FOR FURTHER DIAGNOSIS AND DIRECTION.


PART NUMBERPART NAME
F75Z-7B164-BAIntermediate Clutch Friction Plate (3 Req’d.)

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Information Only

OASIS CODES:

504000, 590000, 597997, 702000