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Home >> Mercedes Benz >> 2019 >> CLA45 AMG >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension - 117 Chassis >> Testing & Repair >> Disassemble/assemble suspension strut - AR32.25-P-1018NKB

Disassemble/assemble suspension strut - AR32.25-P-1018NKB

MODEL 117, 156, 176, 242, 246 

Fig 1: Disassembling/Assembling Suspension Strut Components
G10250390Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  caused by pinching or crushing when working on springs or spring bodies that are under tension Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves. AS00.00-Z-0001-01A
REMOVING Remove     
1 Remove suspension strut (1)   AR32.25-P-1017NKB 
DISASSEMBLINGASSEMBLING Disassemble/assemble     
2 Tension front spring (7) and disassemble suspension strut (1)   AR32.20-P-0200-05NKB
TORQUE SPECIFICATION Self-locking nut, spring cup to piston rod *BA32.25-P-1001-04J 
SPECIAL TOOL Tensioning device Figure
SPECIAL TOOL Clamping plate Fig 2
SPECIAL TOOL Adapter plate Fig 3
3 Remove stop buffer (8) and rubber insert (9) from shock absorber (10) When replacing the shock absorber (10).  
4 Release front spring (7) and remove   AR32.20-P-0200-05NKB
INSTALLATION IMPORTANT Observe installation position of front spring (7).  
TORQUE SPECIFICATION Self-locking nut, spring cup to piston rod *BA32.25-P-1001-04J 
SPECIAL TOOL Tensioning device Figure
SPECIAL TOOL Clamping plate Fig 2
SPECIAL TOOL Adapter plate Fig 3
5 Remove the spring cup (3) from the front spring (7)    
6 Remove thrust bearing (4) from spring cup (3) IMPORTANT Replace thrust bearing (4) if necessary.  
7 Remove rubber ring (6) with dust boot (5) IMPORTANT Check rubber ring (6) and dust boot (5) for damage and replace if necessary.  
INSPECT Check     
8 Check shock absorber (10)   AR32.25-P-0121CW 
IMPORTANT A light oil film on the piston rod is acceptable. Dispose of shock absorber (10) in the event of more severe leakage.  
9 Assemble in the reverse order    
INSTALLING Install     
10 Install suspension strut (1)   AR32.25-P-1017NKB 
11 Perform wheel alignment check   AR40.20-P-0200NKB
SUSPENSION STRUTS

Number Designation MODEL 117, 176, 246 MODEL 156
BA32.25-P-1001-04J Self-locking nut, spring cup to piston rod Nm 100 100
SUSPENSION STRUTS

Number Designation MODEL 242
BA32.25-P-1001-04J Self-locking nut, spring cup to piston rod Nm 100
Fig 2: Clamping Plate (204 589 00 63 00)
G10250391Courtesy of MERCEDES-BENZ USA
Fig 3: Adapter Plate (246 589 00 63 00)
G10250392Courtesy of MERCEDES-BENZ USA
Fig 4: Tensioning Device (203 589 01 31 00)
G07078269Courtesy of MERCEDES-BENZ USA