Suzuki SY413 Service Manual page 2017

7B-78 AUTOMATIC TRANSMISSION (3 A/T)
4) Remove spring seat and return spring assembly.
5) Remove direct clutch piston.
Blow compressed air through drum oil hole to remove piston. If
piston does not pop out, take out piston with long nose pliers.
1. Direct clutch drum
6) Remove inner seal from drum.
7) Remove outer seal from piston.
1. Direct clutch piston
2. Outer seal
Inspection
1) Check valve (steel ball) for free movement in piston.
2) Check valve for leakage by using low pressure air. If found
faulty, replace piston.
1. Direct clutch piston
Installation
1) Install inner seal (O ring).
Apply transmission fluid to inner seal and fit it in drum. Use new
inner seal.
2) Install outer seal (O ring).
Apply transmission fluid to outer seal and fit it to piston. Use new
outer seal.
1. Direct clutch piston
2. outer seal
3) Install piston into drum.
Be careful so that seals (O rings) do not get twisted or caught.