83a - External clutch support K1; 83b - O-ring; 86 - Piston; 86a - Piston O-ring; 86b - Disc spring; 87 - Spring plate; 87a - O-ring spring plate; 88, 90 - Retaining rings; 89 - Disc block; 91 - Retaining ring of the freewheel; 92 - Front freewheel; A - Oil channel for clutch K1
Checking clearance between circlip 90 and outer disc 89c
83a - External clutch support K1; 86 - Piston; 86b - Disc spring; 89a - Outer disk (1.8 mm thick); 89b - Outer disc (thickness 3.5mm/ new thickness 2.8mm); 89s - Outer disk (4.0 mm thick); 89d - Friction discs; 90 - Retaining ring; «L» - Clearance
Disassembly
1. Remove retaining ring 90 from outer support.
2. Remove the disc pack 89 from the outer support.
3. Install puller 072 on spring plate 87 and compress until retaining ring 88 is released.
4. Remove disc spring 86b and piston 86 by blowing compressed air into port A.
Assembly
Assembly is carried out in the reverse order of disassembly. Check clearance between circlip 90 and outer disc 89c. The size of the gaps in the clutch K1 is shown in the table. Adjust the gap using the retaining ring 90. Retaining ring thickness: 2.6, 2.9, 3.2, 3.5, 3.8 and 4.1 mm.