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Home >> Mercedes Benz >> 2025 >> S580 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crank Assembly -- 223 Chassis >> Testing & Repair >> Remove/Install Crank Belt Pulley >> Remove/Install Crank Belt Pulley - AR03.30-P-1700SVZ

Remove/Install Crank Belt Pulley - AR03.30-P-1700SVZ

Engine 279 in model 223 

Fig 1: Crank Belt Pulley Components Location - Model 223 With Engine 279
G16189609Courtesy of MERCEDES-BENZ USA

Shown with engine removed 

CAUTION Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.
AS18.00-Z-0001-01A
Notice  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove fan unit.   AR20.40-P-5050SVZ
2 Remove poly-V-belt.   AR13.22-P-1202SVZ
3 Attach protective plate for cooler.    
REFER TO SHOP-MADE TOOLS     WF58.50-P-0110-01A
4 Remove center screw (2). IMPORTANT Counterhold crankshaft with SPECIAL TOOL counterholder at spokes of belt pulley (1). Aid of helper required.
TORQUE SPECIFICATION Center bolt, belt pulley to crankshaft
*BA03.30-P-1001-01U 
    SPECIAL TOOL Socket wrench bit Fig 3
    SPECIAL TOOL Counterholder Fig 2
5 Remove belt pulley (1) from crankshaft. IMPORTANT Take into account feather key (3).
INSTALLATION IMPORTANT : Installation position of belt pulley (1) is specified by feather key (3) at crankshaft, turn belt pulley (1) if necessary.
 
INSPECT Check     
6 Check belt pulley (1) for damage and wear. IMPORTANT Take into account contact surface of radial shaft sealing ring (4) at belt pulley (1).
If damage or wear is present,
↓
Replace belt pulley (1).
 
7 Check radial shaft sealing ring (4) for engine oil loss, damage and wear. If engine oil loss, damage and/or wear are present:
↓
Replace the radial shaft sealing ring (4).
AR03.20-P-3004SVZ 
8 Install in the reverse order.    
FLYWHEEL, DRIVE PLATE, VIBRATION DAMPER, STARTER RING GEAR

Number Designation Engine 279
BA03.30-P-1001-01U Center bolt, belt pulley to crankshaft Stage 1 Nm 275
Stage 2 ∠° 90
Fig 2: Identifying Counterholder (112 589 00 40 00)
G07320697Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Socket Wrench Bit (001 589 65 09 00)
G09981907Courtesy of MERCEDES-BENZ USA