9.4.13. Dismantling and assembly of coupling of K1
Dismantling 
 Dismantling and assembly of coupling of K1 
|  | 
| 83a — the External support of coupling K1 83b — the Sealing ring
 86 — the Piston
 86a — the Sealing ring of the piston
 86b — the Disk spring
 87 — the Spring plate
 | 87a — the Sealing ring of a spring plate 88, 90 — Lock rings
 89 — the Block of disks
 91 — the Lock ring of the coupling of a free wheeling
 92 — the Forward coupling of a free wheeling
 A — the Oil channel for coupling of K1
 | 
|  | 
| 
| 1. Remove a lock ring (90) from an external support. 2. Remove the block of disks (89) from an external support.
 |  
| 3. Establish a stripper (072) on a spring plate (87) and squeeze it until the lock ring (88) is not released. |  |  
| 4. Remove a disk spring (86b) and the piston (86), having given compressed air to an opening (A). |  | 
Assembly 
 Check of a gap between a lock ring (90) and an external disk (89c) 
|  | 
| 83a — the External support of coupling K1 86 — the Piston
 86b — the Disk spring
 89a — the External disk (thickness of 1.8 mm)
 89b — the External disk (thickness of 3.5 mm / new thickness is 2.8 mm)
 | 89c — the External disk (thickness of 4.0 mm) 89d — Frictional disks
 90 — the Lock ring
 L — the Gap
 | 
Assembly is carried out as it should be, the return to dismantling. Check a gap between a lock ring (90) and an external disk (89c). The size of gaps in coupling
 of K1 is specified below in the table. In case of need adjust a gap by selection of a lock ring (90) of the required thickness. 
Rings 2.6, 2.9, 3.2, 3.5, 3.8 and 4.1 mm thick are issued
. 
The size of gaps in coupling of K1 
| Disk  | Size of a gap, mm  | 
| 3  | 2.70-3.10  | 
| 4  | 3.00-3.40  | 
| 5  | 3.30-3.70  |