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Home >> Mercedes Benz >> 2021 >> CLS450 Base >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transmission - 257 Chassis 2 Of 2 >> Testing & Repair >> Remove/Install Oil Lines Of Oil Cooling For Automatic Transmission - AR27.55-P-0600MSA

Remove/Install Oil Lines Of Oil Cooling For Automatic Transmission - AR27.55-P-0600MSA

Transmission 725.0 in model 213, 238, 257, 290 with engine 256 

Shown on transmission 725.0 for engine 256 with code M005 (4MATIC) 

G14548383Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.
AS00.00-Z-0017-01A
CAUTION Risk of injury  to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.
AS00.40-Z-0001-01A
  Notes on automatic transmission   AH27.19-P-0001-01NKB
REMOVINGINSTALLING Remove/install     
1 Remove lower center and rear engine compartment lining. Transmission 725.0 in model 290 with engine 256 AR61.20-P-1105FRX
    Transmission 725.0 in model 213, 238 with engine 256 AR61.20-P-1105LWE
    Transmission 725.0 in model 257 with engine 256
INSTALLATION IMPORTANT : Only install lower center and rear engine compartment lining again after leak test.
AR61.20-P-1105FR
2 Clean area surrounding the oil lines (1 l, 1 r) thoroughly.    
3 Remove oil lines (1 l, 1 r) from automatic transmission (3) and seal openings with suitable stop plugs.   AR27.10-P-0501-03LF
    SPECIAL TOOL Record plug Fig 1
4 Remove oil lines 1r) from oil cooler (2), seal openings with suitable stop plugs and remove downwards.   AR27.10-P-0501-03LF
    SPECIAL TOOL Record plug Fig 1
5 Check seals in oil cooler and in threaded fitting in the automatic transmission (3) for any signs of leakage. If the seals are leaky,

replace threaded fitting in automatic transmission (3) or oil cooler.
 
      AR27.55-P-1000MSA 
    TORQUE SPECIFICATION Threaded fitting for oil line to torque converter housing *BA27.10-P-1007-04H 
6 Install in the reverse order.    
7 Check and correct oil level in automatic transmission (3).   AR27.00-P-0270EWN
WARNING 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. 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 Perform engine test run and check oil lines 1r) and oil cooler (2) for leak tightness.    
9 Install bottom center and rear engine compartment paneling. Transmission 725.0 in model 290 with engine 256 AR61.20-P-1105FRX
    Transmission 725.0 in model 213, 238 with engine 256 AR61.20-P-1105LWE
    Transmission 725.0 in model 257 with engine 256 AR61.20-P-1105FR
AUTOMATIC TRANSMISSION COMPLETE

Number Designation Transmission 725.0
BA27.10-P-1007-04H Threaded fitting for oil line to torque converter housing Nm 40
Fig 1: Identifying Record Plug (129 589 00 91 00)
G11065549Courtesy of MERCEDES-BENZ USA