Disassembly and Reassembly

Forward Clutch Disassembly and Reassembly

Automatic Transmission Unit Disassembly

Forward Clutch Components

Disassembly

1) After removing retaining ring (1), remove direct clutch hub (2) and forward clutch hub (3).






2) Remove bearing race (1) and thrust bearing (2).





3) Remove retaining ring (1) and then remove all clutch discs.





4) Using special tool and hydraulic press, compress forward clutch piston return spring and remove retaining return spring.
Special Tool

(A): 09926-98310

NOTE:
Applying excessive pressure when compressing the piston return spring will deform the spring's plate section.

Do not apply any more pressure than is necessary.

5) Remove forward clutch piston return spring.





6) Install forward clutch to O/D case (1). Blow low pressure air into fluid hole (2) at the right of cut in O/D case to remove forward clutch piston (3).






Reassembly

Forward Clutch Inspection

Bearing and Race Installation Specification
1) Apply A/T fluid to new forward input shaft O-rings, install forward clutch piston and piston return spring (2) to forward input shaft and then install retaining return spring ring (1) with special tool and hydraulic press.

NOTE:
Applying excessive pressure when compressing the piston return spring will deform the spring's plate section.

Do not apply any more pressure than is necessary.

NOTE:
- When installing return spring (2), be careful so that return spring will not fall or tilt.
- Do not align opening in retaining ring (1) with lug of forward clutch piston return spring at its retainer section.

Special Tool

(A): 09926-98310





2) Install clutch discs and plates and then install retaining clutch ring.

NOTE:
- Refer to Components Forward Clutch Components
when installing each component.
- Do not match opening in retaining clutch ring and dent in forward clutch input shaft.

3) Install bearing races (1) and thrust bearing (2).





4) Install forward clutch hub (3), direct clutch hub (2) and retaining ring (1) in that order.











5) Install forward clutch (2) to O/D case (1). Apply compressed air (400 - 800 kPa, 4 - 8 kgf/cm2, 57 - 113 psi) to oil hole at the right of cut in O/D case and measure movement of forward clutch piston.

If measured value is not within standard range, select another plate with suitable thickness from the list below and replace it.

Standard forward clutch piston movement
1.40 - 1.70 mm (0.055 - 0.067 in.)