Remove/install compressor belt pulley - AR09.50-P-4787R

ENGINE 112.960/961, 113.990/991/992/995

Fig 1: Identifying Compressor Belt Pulley Remove/Install Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Compressor Belt Pulley Remove/Install Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Compressor Belt Pulley Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Remove
	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Risk of death caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Open engine hood and raise to vertical position	Model 170	AR88.40-P-1000G
		Model 203	AR88.40-P-1000P
		Model 211	AR88.40-P-1000T
		Model 215, 220	AR88.40-P-1000M
		Model 219	AR88.40-P-1000TX
		Model 230	AR88.40-P-1000R
2	Remove poly-V belt	Slacken only poly-V belt and remove it from the compressor belt pulley (3).
		Model 170, 203	AR13.22-P-1202SVK
		Model 211, 215, 220, 230	AR13.21-P-1202RVK
		Model 219	AR13.21-P-1202TZ
3	Remove bottom engine compartment paneling	Model 211	AR61.20-P-1105T
		Model 215, 220	AR61.20-P-1105M
		Model 219	AR61.20-P-1105TX
		Model 230	AR61.20-P-1105R
		Model 170	AR61.20-P-1105A
		Model 203	AR61.20-P-1105P
4	Loosen both front engine mounts (1)	211, 215, 220	*BA22.10-P-1001-01L
		219	*BA22.10-P-1001-01S
		203	*BA22.10-P-1001-01R
		170	*BA22.10-P-1001-01L
5	Mount bracket on supercharger housing	Bracket	Figure
6	Raise engine with engine crane until the center bolt (2) is accessible with an impact wrench	Ensure that the coolant hoses and hydraulic lines of the power steering pump are not overstretched.
7	Remove center bolt (2)	Loosen center bolt using impact wrench.
7	Remove center bolt (2)		*BA09.50-P-1007-01B
8	Remove supercharger belt pulley (3)	If belt pulley is seized use pulley with corresponding clamping pliers To pull off, screw in center bolt without shim and use as a support.
		Clamping pliers for M112	Fig 5
		Clamping pliers for M113	Figure
		Puller	Figure
	Install
9	Attach compressor belt pulley (3) to the magnetic clutch (Y2/1)
10	Measure clearance at the compressor belt pulley (3)	Fit center bolt (2) of supercharger belt pulley (3), then measure at 3 points. The clearance can be corrected with supplied graduated disks.
10	Measure clearance at the compressor belt pulley (3)	Clearance	*BE09.50-P-1001-01A
11	Tighten center bolt (2) of compressor belt pulley (3)	Clean threads. Glue in center bolt (2) with Loctite. Hold magnetic clutch (Y2/1) with bracket (6).
		Bracket	Fig 4
		General purpose tensioning strap	*BA09.50-P-1007-01B
		Loctite 243	*BR00.45-Z-1133-02A
12	Install poly-V belt	Model 170, 203	AR13.22-P-1202SVK
		Model 211, 215, 220, 230	AR13.21-P-1202RVK
		Model 219	AR13.21-P-1202TZ
13	Raise vehicle and tighten both the front engine mounts (1)	Model 215	*BA22.10-P-1001-01L
		Model 211, 220	*BA22.10-P-1002-03A
		Model 230	*BA22.10-P-1001-03H
		Model 219	*BA22.10-P-1001-01S
		Model 203	*BA22.10-P-1001-01R
		Model 170	*BA22.10-P-1001-01L
14	Install lower engine compartment paneling	Model 211	AR61.20-P-1105T
		Model 215, 220	AR61.20-P-1105M
		Model 219	AR61.20-P-1105TX
		Model 230	AR61.20-P-1105R
		Model 203	AR61.20-P-1105P
		Model 170	AR61.20-P-1105A
15	Carry out engine test run
16	Close engine hood	Model 170	AR88.40-P-1000G
		Model 203	AR88.40-P-1000P
		Model 211	AR88.40-P-1000T
		Model 215, 220	AR88.40-P-1000M
		Model 219	AR88.40-P-1000TX
		Model 230	AR88.40-P-1000R

ELECTROMAGNETIC CLUTCH

Number	Designation		Engine 112.960/961	Engine 113.990/991/992/995
BE09.50-P-1001-01A	Clearance	mm	0.25 to 0.30	0.35 to 0.45

SUPERCHARGER

Number	Designation		Engine 112.960/961 AMG	Engine 113.990	Engine 113.991	Engine 113.992/995
BA09.50-P-1007-01B	Center bolt on compressor belt pulley	Nm	20	60	60	60

ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation		Engine 112.961 in model 203
BA22.10-P-1001-01R	Bolt, front engine mount to front axle carrier	Nm	35

ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation		Engine 112.947/960 in model 170	Engine 113.991 in model 215
BA22.10-P-1001-01L	Bolt, front engine mount to front axle carrier	Nm	35	35

ENGINE MOUNT, ENGINE SUPPORT (ENGINE SIDE)

Number	Designation		Model 211 except 4MATIC	Model 211 with 4MATIC	Model 220
BA22.10-P-1002-03A	Front engine mount on front axle carrier	Nm	35	35	35

ENGINE SUSPENSION, ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation		Engine 113 in model 219
BA22.10-P-1001-01S	Bolt, front engine mount to front axle carrier	Nm	35

ENGINE MOUNT, ENGINE SUPPORT (ENGINE SIDE)

Number	Designation		Model 230 except model 230.476/477/479
BA22.10-P-1001-03H	Bolt, front engine mount to front axle carrier	Nm	35

Fig 4: Identifying Bracket (126 589 00 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Chuck (000 589 02 34 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Puller (001 589 50 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 7: Identifying Chuck (124 589 01 34 00)

Courtesy of MERCEDES-BENZ USA

Fig 8: Identifying Bracket (112 589 00 62 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1133-02A	Loctite 243	A 613 989 09 71