Remove thrust washer (1) and slotted seal rings (2). Remove retaining ring (3) for multi-plate clutch C1 with suitable screwdriver. Remove flange (4), lining plates (5) and steel plates (6).
Install Clutch Tensioner KM-J-23078-A (7) and clamp nut for tensioning in vice. Turn housing for multi-plate clutch C1 (compressing release springs) until retaining ring is free. Remove retaining ring with KM-396 (8).
Release KM-J-23078-A and remove. Remove return springs assembly.
Insert housing with piston for multi-plate clutch C1 (1) in rear cover.
Important!
When inserting in rear cover, ensure that the slotted seal rings (x 4) do not get damaged.
Remove, Disconnect
Piston for multi-plate clutch C1 (2) - blow in low pressure compressed air (arrow). Replace piston seal rings (3 and 4) - coat with transmission fluid before installation.
Inspect
Lock ball of pistons for multi-plate clutch C1 - shake piston (5) to check whether lock ball is movable. Check return springs assembly for damage, replace if necessary. Check sliding surfaces of steel and lining plates for damage and wear, replace if necessary. Immerse new lining plates in transmission fluid for at least 2 hours before installation.
Assemble
Insert piston C1 (2) with new O-rings in housing for multi-plate clutch C1 - do not damage O-rings. Place return spring assembly (1) on piston C1 - position retaining ring. Install KM-J-23078-A (4) and compress return springs - insert retaining ring with KM-396 (3). Disengage and remove KM-J-23078-A. Install alternately steel plates (7) and lining plates (6) on piston C1, lastly flange (5) - number of steel and lining plates see Technical Data "Parts List". Insert retaining ring (8) with screwdriver.
Insert multi-plate clutch assembly C1 in rear cover.
Inspect
Raise piston C1 and thus check function - blow compressed air into bore on rear cover (arrow).
Install, Connect
Install slotted seal rings - x 3 (2) and thrust washer (1) with assembly grease.
Disassemble 
Important! 
Remove, Disconnect 
Inspect 
Assemble 
Install, Connect 