SECTION 307-01: Automatic Transaxle/Transmission — 6R80
2014 Mustang Workshop Manual
DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIES
Procedure revision date: 01/07/2013

Overdrive Clutch Assembly


Special Tool(s)
Compressor, Spring Washer
307-209
Dial Indicator Gauge with Holding Fixture
100-002 (TOOL-4201-C) or equivalent
End Play Gauge, Clutch
307-555

Material
Item Specification
Motorcraft® MERCON® LV Automatic Transmission Fluid
XT-10-QLVC (US); CXT-10-LV12 (Canada) 		MERCON® LV

Overdrive (O/D) Clutch Assembly

Item Part Number Description
1 7F207 Input shaft
2 7A548 Overdrive (O/D) clutch piston outer seal
3 7A548 O/D clutch piston inner seal
4 7A262 O/D clutch piston
5 7B070 O/D clutch piston spring
6 7A548 O/D balance piston outer seal
7 7H360 O/D balance piston
8 7C122 O/D balance piston snap ring
9 7B164 O/D clutch internal splined clutch friction plates (quantity model dependent)
10 7B442 O/D clutch external splined clutch steel plates (quantity model dependent)
11 7B066 O/D pressure plate
12 7D483 O/D clutch retaining ring
13 7C096 Bearing T3

Disassembly

  1. Position the Overdrive (O/D) clutch assembly in the Clutch End Play Gauge and remove the T3 thrust bearing.
  1. Remove the O/D clutch pack snap ring.
  1. Remove the O/D clutch pack.
  1. Using the Spring Washer Compressor and a press, remove and discard the O/D clutch balance piston retaining ring.
  1. Remove the O/D clutch balance piston.
  1. Remove the O/D clutch return spring.
  1. Remove the O/D clutch apply piston.
  1. Remove and discard the outer O-ring seal on the O/D clutch balance piston.
  1. Remove and discard both the inner (one large and one small) O-ring seals on the O/D clutch apply piston.
  1. Remove and discard the 3 scarf cut seals.

Assembly

  1. Install the 3 new scarf cut seals and the roller bearing.
  1. Install a new outer O-ring seal on the O/D clutch balance piston.
  1. Install 2 new inner O-ring seals on the O/D clutch apply piston.
  1. Lubricate all the O-ring seals with clean transmission fluid. Install the O/D clutch apply piston into the drum with the O-ring seals and the 3 pads facing down toward the drum.

  1. NOTE: The fingers on the return spring are facing down toward the piston.

    Install the O/D clutch return spring.

  1. NOTE: The cone shape of the balance piston must face up when installed correctly.

    Lubricate all the O-ring seals with clean transmission fluid. Install the O/D clutch balance piston.
  1. Using the Spring Washer Compressor, install a new O/D clutch balance piston retaining ring.
  1. Soak the new O/D clutch plates in clean transmission fluid.

  1. NOTE: Friction and steel plate quantity will vary based on engine displacement. For additional information, refer to the Clutch Plate Quantity chart in the Specifications portion of this section.

    Install the new O/D clutch plates, starting with a steel plate and alternating between friction and steel plates, and ending with the pressure plate on the top.
  1. Install the O/D clutch pack snap ring.

  1. NOTE: All O/D clutch plates, friction and steel are of a wave-type design.

    Install the O/D clutch assembly into the Clutch End Play Gauge and install the Dial Indicator Gauge with Holding Fixture and position the plunger so it fits into the opening of the snap ring.
  1. With the Dial Indicator Gauge set at zero, lift up on the steel pressure plate so it is against the select fit snap ring. Record this reading as reading A.
  1. Rotate the O/D clutch assembly 180 degrees from the opening of the snap ring, take a second reading and record this reading as reading B.

    Description Reading
    Reading A  
    Reading B  
    Add reading A to reading B for a total end clearance  
    Divide the total reading by 2 for an average end clearance  

  1. NOTE: If the final measurement is not within specification, install a new snap ring until the correct specification is achieved.

    If the free pack end clearance between the bottom of the snap ring and the top of the pressure plate is high, remeasure using a thicker select fit snap ring. If the free pack end clearance between the bottom of the snap ring and the top of the pressure plate is low, remeasure using a thinner select fit snap ring.

  1. NOTE: Inspect and install new thrust bearings as required.

    Install the T3 thrust bearing.