Disassemble/assemble K2 clutch - AR27.51-P-0820W

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TRANSMISSION 722.9, 724.2

MODIFICATION NOTES

26.8.14	"Remove main components of the transmission" added.	Operation step 1
26.8.14	"Install main components of the transmission" added.	Step 31

Fig 1: K2 Clutch Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: K2 Clutch Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove
1	Remove main components of transmission		AR27.50-P-0610W
	Disassemble
2	Remove bearing (11l)	Check the contact surface and bearing (11l) for swirl marks and damage.
3	Remove Torlon rings (1a)
4	Remove thrust bearing (2d)	Check contact surface and radial bearing (see arrow in the first picture) in the output shaft guide for swirl marks and damage. If necessary: ↓ Replace thrust bearing (2d) and radial bearing.
5	Remove retaining ring (105s) and end disk (105)
6	Remove clutch pack (5) and disk spring (5t)	Check disks for scorch marks and wear.
7	Place multidisk clutch (11) in lever press	Workshop press (stationary)
8	Fit assembly device (076) on spring cup (11f)	Assembly device	Figure
9	Operate lever press and expose retaining ring groove (104)	Stop lever press stoke as soon as accessibility to groove is sufficient. Excess force will otherwise cause damage.
10	Remove retaining ring (11s)	Pliers	Figure
11	Move back lever press
12	Remove assembly device (076) and multidisk clutch (11) from lever press
13	Remove spring cup (11f)
14	Remove disk spring (11t)
15	Remove piston (11k)
	Assemble
16	Install piston (11k)	Replace O-ring.
17	Insert disk spring (11t)	Insert the disk spring (11t) in such a way that the curvature of the inner circumference points toward the spring cup (11f).
18	Position spring cup (11f)	Replace seal. The rounded edge of the sealing ring must face outwards.
19	Place multidisk clutch (11) in lever press
20	Fit assembly device (076) on spring cup (11f)	Assembly device	Figure
21	Operate lever press and expose retaining ring groove (104)	Position spring cup (11f) exactly. Otherwise the spring cup (11f) may tilt and malfunctions occur. Stop lever press stoke as soon as accessibility to groove is sufficient. Excess force will otherwise cause damage.
22	Install retaining ring (11s)	Pliers	Figure
23	Move back lever press
24	Remove assembly device (076) and multidisk clutch (11) from lever press
25	Install disk spring (5t) and clutch pack (5)	Insert the disk spring (5t) in such a way that the curvature of the inner circumference points toward the piston (11k). Observe the installation sequence: ↓ Survey of multi-disk components, production details
	Install disk spring (5t) and clutch pack (5)	TRANSMISSION 722.9	GF27.51-P-5200W
26	Install end disk (105) and retaining ring (105s)
	Measure
27	Measure and adjust clearance	TRANSMISSION 722.9, 724.2 Multidisk brake B1, B2, B3 and multidisk clutch K1, K2, K3	AR27.51-P-7229W
28	Insert thrust bearing (2d)
29	Install Torlon rings (1a)	Replace the Torlon rings (1a).
29	Install Torlon rings (1a)	Sleeve	Figure
30	Install bearing (11l)
	Install
31	Install main components of transmission		AR27.50-P-0610W

Fig 3: Identifying Pliers (000 589 52 37 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Assembly Device (140 589 13 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Sleeve (722 589 01 14 00)

Courtesy of MERCEDES-BENZ USA