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Remove/Install Dual Clutch - AR27.20-P-0070MFA

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Transmission 724.1 in model 118, 177, 247 

Fig 1: Dual Clutch Components Location - Transmission 724.1 In Model 118
G16049712Courtesy of MERCEDES-BENZ USA
G16049713Courtesy of MERCEDES-BENZ USA
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
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
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
  Notes on automatic transmission   AH27.19-P-0001-01NKB 
REMOVING Remove     
1 Remove transmission.   AR27.10-P-0009MFA 
2 Attach automatic transmission to assembly stand.   AR27.10-P-0600-01MFA 
REFER TO SPECIAL TOOLS 000 588 27 31 00 Assembly stand for cars   WS01.00-P-0262B
    IMPORTANTCommercially available devices/tools 
Boom crane
SPECIAL TOOL Assembly device		 Fig 4
3 Remove retaining ring (1). NOTES Do not damage seat of retaining ring (1) and sealing surface on coupling housing (27K).
Otherwise leaks may occur.
If slight damage is detected on the sealing surface of the clutch housing (27K)
↓
grind down sealing surface in area of retaining ring (1) on coupling housing (27K) using oily abrasive paper, then clean.		  
REFER TO CAPACITIES & SPECIFICATIONS   Automatic transmission fluids (ATF) (specification 236.22) BB00.40-P-0236-22A
    Assembly cleaner *BR00.45-Z-1028-04A 
4 Pry off cap (2) using suitable tool.    
5 Remove shim (3).    
6 Remove axial bearing (4).    
7 Check axial bearing (4) for damage. If damage is found
↓
replace axial bearing (4).		  
8 Pull locking pin (A) upwards. SPECIAL TOOL Assembly tool Fig 5
9 Open lever (B) all the way. SPECIAL TOOL Assembly tool Fig 5
10 Mount assembly tool (01) onto dual clutch (5). SPECIAL TOOL Assembly tool Fig 5
11 Pull safety pin (A) upward again. SPECIAL TOOL Assembly tool Fig 5
12 Close lever (B) and latch locking pin (A) into assembly tool (01). SPECIAL TOOL Assembly tool Fig 5
13 Lift dual clutch (5) out of clutch housing (27K) using assembly tool (01). SPECIAL TOOL Assembly tool Fig 5
14 Remove sealing rings (6) from dual clutch (5).    
INSTALLING Install     
15 Install sealing rings (6) of dual clutch (5). IMPORTANT Replace sealing rings (6) and check sealing rings (6) are correctly seated.  
16 Insert dual clutch (5) carefully and without tilting it into the coupling housing (27K). SPECIAL TOOL Assembly tool Fig 5
17 Turn dual clutch (5) slightly until the toothing of the drive shaft (30) and the hollow shaft (40) engages correctly in the dual clutch (5). SPECIAL TOOL Assembly tool Fig 5
18 Remove assembly tool (01) from dual clutch (5). SPECIAL TOOL Assembly tool Fig 5
19 Install axial bearing (4).    
20 Install shim (3).    
MEASURING Measure     
21 Measure installed dimension of dual clutch (5) and adjust.   AR27.20-P-0070-01MFA 
    SPECIAL TOOL Parallel support Fig 6
    SPECIAL TOOL Support Fig 3
22 Fit assembly sleeve onto drive shaft (30). IMPORTANT The assembly sleeve is required to protect the sealing lip on the cap (2)
SPECIAL TOOL Assembly sleeve		 Fig 2
23 Install cover (2). IMPORTANT Replace cap (2).  
24 Check retaining ring (1) for damage. If damage is found
↓
Install new retaining ring (1).		  
25 Install retaining ring (1). IMPORTANT Ensure the retaining ring (1) is seated correctly.  
26 Detach assembly sleeve from drive shaft (30). SPECIAL TOOL Assembly sleeve Fig 2
27 Remove automatic transmission from assembly stand.    
REFER TO SPECIAL TOOLS 000 588 27 31 00 Assembly stand for cars   WS01.00-P-0262B
    SPECIAL TOOL Assembly device Fig 4
28 Install automatic transmission.   AR27.10-P-0009MFA 
INSPECT Check     
29 Check transmission oil level, correct, if necessary.   AR27.00-P-0104MFA 
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
30 Carry out engine test run, checking engine and automatic transmission for proper operation and leak tightness whilst doing so.    
Fig 2: Identifying Assembly Sleeve (724 589 00 14 00)
G16049714Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Support (724 589 06 31 00)
G14688638Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Assembly Device (724 589 05 40 00)
G16049716Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Assembly Tool (724 589 00 31 00)
G16049717Courtesy of MERCEDES-BENZ USA
Fig 6: Identifying Parallel Support (168 589 03 21 00)
G16049718Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01
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