Reverse Idler Gear Retaining Rings

Disassembly

1. Remove the following parts from reverse idler gear shaft:

   • Reverse idler gear retaining ring
   • Spacer
   • Reverse idler gear and bushing
   • Reverse idler gear bearings
   • Reverse idler gear thrust washer

   

   Item	Part Number	Description
   1	7141	Reverse Idler Gear and Bushing
   2	7156	Reverse Idler Gear Retaining Ring
   3	7140	Reverse Idler Gear Shaft
   4	7N037	Thrust Washer
   5	7N037	Thrust Washer with Tang
   6	7E139	Reverse Idler Gear Bearing
   A	—	Retainer Ring (Installed)
   B	—	24.9-25.5mm Retainer Ring Outer Diameter After Assembly

Assembly

1. NOTE: During installation, apply Motorcraft MERCON® Multi-Purpose Automatic Transmission Fluid XT-2-QDX or -DDX or equivalent MERCON® to all rotating or sliding parts.

   Install reverse idler gear thrust washer onto reverse idler gear shaft (7140). Make sure that tab on reverse idler gear thrust washer mates with groove on reverse idler gear shaft to prevent rotation of reverse idler gear thrust washer.

2. Install the following parts onto reverse idler gear shaft in the order listed.

   • Reverse idler gear bearings
   • Reverse idler gear and bushing
   • Spacer

3. Install original reverse idler gear retaining ring onto reverse idler gear shaft. Insert a feeler gauge between reverse idler gear retaining ring and reverse idler gear and bushing to measure end play. Using the chart, adjust end play to 0.1-0.2mm (0.0039-0.0078 inch) by installing a reverse idler gear retaining ring of necessary thickness.

   REVERSE IDLER GEAR RETAINING RINGS

   Part Number	Thickness
   E8TZ-7156-F	1.5mm (0.059 In.)
   E8TZ-7156-E	1.6mm (0.0629 In.)
   E8TZ-7156-D	1.7mm (0.0669 In.)
   E8TZ-7156-C	1.8mm (0.0708 In.)
   E8TZ-7156-B	1.9mm (0.0748 In.)