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Home >> Mercedes Benz >> 2017 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crank Assembly - 205 Chassis >> Testing & Repair >> Replace Front Crankshaft Radial Sealing Ring >> Replace Front Crankshaft Radial Sealing Ring - AR03.20-P-3000MRA

Replace Front Crankshaft Radial Sealing Ring - AR03.20-P-3000MRA

Engine 274.9 in model 205 

Engine 274.9 in model 253 

Shown on engine 274.9 in model 205 (except 205.047/147/247) 

G12933242Courtesy of MERCEDES-BENZ USA
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
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVING Remove     
1 Remove belt pulley/vibration damper (3)   AR03.30-P-1600MRA 
2 Use suitable tool to pry radial shaft sealing ring (5) out of timing case cover NOTES
Do not damage crankshaft (1) and timing case cover and use to push out a clean rag as a base.
Leaks can occur otherwise.
 
3 Check contact surface of the radial shaft sealing ring (5) on hub of the belt pulley/vibration damper (3) for scoring and galling In a case of scorch marks and galling

replace belt pulley/vibration damper (3).
 
INSTALLING Install     
4 Install new radial shaft sealing ring (5)   AR03.20-P-3000-01MR 
    SPECIAL TOOL Drift Fig 1
5 Install belt pulley/vibration damper (3)   AR03.30-P-1600MRA 
6 Check engine oil level and correct    
REFER TO MAINTENANCE     AP18.00-P-1811MP
Fig 1: Identifying Drift (270 589 00 15 00)
G12933243Courtesy of MERCEDES-BENZ USA