Overdrive (Case Side) Disassembly and Assembly
Overdrive (Case Side) Disassembly and AssemblyDisassembly
1) Remove retaining ring (1), brake backing plate (2), brake disc (3) and brake plate (4) in that order. Then remove planetary ring gear, thrust bearing race and thrust bearing.
2) Remove retaining ring and piston return spring using special tool and hydraulic press (1).
Special Tool
(A): 09926-96510
CAUTION:
Be careful when applying pressure, for overpressure will cause plate section of piston return spring to deform.
3) Apply compressed air (400 - 800 kPa, 4 - 8 kgf/cm2, 57 - 113 psi) to oil hole (1) in O/D case (2) and remove brake piston.
4) Remove brake piston inner ring and brake piston outer ring from brake piston.
5) Unsnap seal ring (1).
6) Remove 2 seal rings (1).
Assembly
Install each component by reversing removal procedure and noting the following points.
^ When installing new rear seal ring, use care not to open it too wide.
^ Apply A/T fluid to new O-ring, disc, etc. before installing them.
^ Opening of retaining brake front ring (2) and projection (1) of O/D case should be matched.
^ When installing each component, refer to Overdrive (Case Side) Components:4 A/T.
^ Measure clearance between retaining ring (1) and brake backing plate (2) with thickness gauge.
If the clearance is out of specification, select another plate with suitable thickness from the list below and replace it.
Standard clearance between retaining ring and brake backing plate
0.40 - 1.38 mm (0.016 - 0.054 in.)
