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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crank Assembly - 172 Chassis >> Testing & Repair >> Replace Front Crankshaft Radial Sealing Ring - AR03.20-P-3000W

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

Engine 152.9, 276 in model 172.4 

Shown on ENGINE 276 

Fig 1: Front Crankshaft Radial Sealing Ring Components Location - Engine 276 In Model 172.4
G13841720Courtesy of MERCEDES-BENZ USA
  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 Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVING Remove     
1 Remove belt pulley/vibration damper (8)   AR03.30-P-1600W 
2 Press out radial shaft sealing ring (5) from the mounting hole using a screwdriver NOTES
Use a clean rag as a base when pushing out. Leaks can occur otherwise.
 
INSPECT Check     
3 Check contact surface of radial shaft sealing ring (5) at hub of belt pulley/vibration damper (8) for damage If damage is present

Replace belt pulley/vibration damper (8)
 
      AR03.30-P-1600W 
INSTALLING Install     
4 Install radial shaft sealing ring (5)   AR03.20-P-3000-01MM 
    IMPORTANT Install a new radial shaft sealing ring (5).  
    SPECIAL TOOL Sleeve Fig 2
5 Install belt pulley/vibration damper (8)   AR03.30-P-1600W 
    IMPORTANT Only install engine cover after the engine test run.  
6 Check engine oil level; correct if necessary    
REFER TO MAINTENANCE     AP18.00-P-1811MP
7 Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.
Carry out an engine test run and check engine for leak tightness
Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
8 Install lower engine cover   AR61.20-P-1105W
Fig 2: Identifying Sleeve (119 589 01 14 00)
G13743781Courtesy of MERCEDES-BENZ USA