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Home >> Mercedes Benz >> 2016 >> SLK55 AMG >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof, Soft Top, Top Attachments - 172 Chassis >> Testing & Repair >> Remove/install hydraulic cylinder for trunk lid actuation - AR77.37-P-3550W

Remove/install hydraulic cylinder for trunk lid actuation - AR77.37-P-3550W

MODEL 172.4 

Fig 1: Identifying Trunk Lid Actuation Hydraulic Cylinder Remove/Install Components
G10248474Courtesy of MERCEDES-BENZ USA
REMOVING Removing     
DANGER Risk of injury  caused by moving parts that can pinch, crush  or, in extreme cases, even sever  extremities No parts of the body or limbs should be within the operating range of the mechanism when moving components. AS00.00-Z-0009-01A
DANGER Risk of injury  to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning  caused by swallowing hydraulic fluid Depressurize hydraulic system completely before starting any work on system. Wear protective clothing and safety glasses. AS00.00-Z-0013-01A
1 Remove left or right side paneling in trunk   AR68.30-P-4600W
2 Connect tubular frame (2) with cable tie at suitable point. e.g. to left or right console (3) IMPORTANT This prevents the tubular frame (2) from being folded down when the trunk lid actuation hydraulic cylinder (1) is removed.  
3 Open lock tab (4) and unclip tubular frame open limit switch (S119) from right trunk lid actuation hydraulic cylinder (1) When removing right trunk lid actuation hydraulic cylinder (1).  
4 Lift upper retainer (5) and unclip left or right trunk lid actuation hydraulic cylinder (1) from tubular frame (2)    
5 Lift lower retainer (6) on trunk lid actuation hydraulic cylinder (1) and unclip trunk lid actuation hydraulic cylinder (1) from lower mount (7)    
6 Move retaining clips (8) on trunk lid actuation hydraulic cylinder (1) with suitable pliers and pull hydraulic lines (9) out of trunk lid actuation hydraulic cylinder (1). NOTES When removing retaining clips (8), do not support tool against hydraulic lines (9). Otherwise the hydraulic lines (9) can be damaged.
IMPORTANT Lay rag below hydraulic line connections (9) to catch hydraulic oil running out.
 
7 Remove trunk lid actuation hydraulic cylinder (1) from trunk    
INSTALLING Install     
8 Fasten hydraulic lines (9) on trunk lid actuation hydraulic cylinder (1) and secure with retaining clips (8) IMPORTANT Observe marking of hydraulic lines (9). Connect line no. 51 at piston side and line no. 53 at rod side of left trunk lid actuation hydraulic cylinder (1).
Connect line no. 40 at piston side and line no. 42 at rod side of right trunk lid actuation hydraulic cylinder (1).
 
9 Clip trunk lid actuation hydraulic cylinder (1) onto bottom mount (7)    
10 Remove support to fasten trunk lid assembly position SPECIAL TOOL Support Fig 2
11 Cable ties at the tubular frame (2), for securing against folding down the tank cap degrade, and lock the boot lid in the rear lid lock    
12 Close tubular frame (2) by hand together with trunk lid and lock    
NOTES General notes on repairing tubular frame   AH88.50-P-0002-01V
13 Adjust trunk lid actuation hydraulic cylinder (1)   AR88.50-P-5100-02V
14 Install tubular frame open limit switch (S119) on right trunk lid actuation hydraulic cylinder (1) and close lock tap (4) When installing right trunk lid actuation hydraulic cylinder (1).  
15 Install left and right side paneling in trunk   AR68.30-P-4600W
16 Check/correct oil level of hydraulic unit   AR77.37-P-3501W 
Fig 2: Identifying Support (170 589 04 63 00)
G07274827Courtesy of MERCEDES-BENZ USA