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Home >> Smart >> 2015 >> Fortwo Electric Drive, 2D Convertible >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Axle - 451 Chassis >> Testing & Repair >> Remove/install rubber mounts of transverse control arms - AR33.20-P-0400MCC

Remove/install rubber mounts of transverse control arms - AR33.20-P-0400MCC

MODEL 450.3/4, 451.3/4, 452.3/4 

Fig 1: Identifying Rubber Mounts Of Transverse Control Arms Remove/Install Components
G10978344Courtesy of MERCEDES-BENZ USA
REMOVING Removing     
1 Remove left or right transverse control arm on front axle (1) Model 450.3/4 up to 7.1.01 AR33.20-P-1452SN
    Model 450.3/4 as of 8.1.01 AR33.20-P-1452SM
    Model 451.3/4 AR33.20-P-1452MCC 
    Model 452.3/4 AR33.20-P-1452RR
DISASSEMBLING Disassemble     
2 Position threaded rod (3.1) with thrust piece (3.2) from outside up against the rubber mount (2) of the front axle transverse control arm (1) IMPORTANT Observe installation position of thrust piece
SPECIAL TOOL (3.2). The rubber mount (2) must be seated in the recess on the SPECIAL TOOL thrust piece (3.2).
SPECIAL TOOL Extraction and insertion tool
Fig 3
3 Position counterholder (3.3) on inside up against rubber mount (2) of front axle transverse control arm (1) IMPORTANT Here, the cutout of the counterholder (3.3) must be positioned on the bar (arrow A) of the front axle transverse control arm (1).
SPECIAL TOOL Extraction and insertion tool
Fig 3
4 Screw nut (3.4), as shown, up to mounting face of threaded rod (3.1) SPECIAL TOOL Extraction and insertion tool Fig 3
5 Position hollow piston cylinder, hand pump and hydraulic hose on preassembled removal fixture and press out rubber mount (2) SPECIAL TOOL Hollow piston cylinder Fig 2
    SPECIAL TOOL Hand pump Fig 4
    SPECIAL TOOL Hydraulic hose (complete) Fig 5
6 Unscrew nut (3.4) and remove removal fixture and rubber mount (2)    
ASSEMBLING Assembly    
7 Position rubber mount (2) on front axle transverse control arm (1)    
8 Position threaded rod (3.1) with thrust piece (3.2) from inside up against the rubber mount (2) of the front axle transverse control arm (1) IMPORTANT Observe installation position of thrust piece SPECIAL TOOL (3.2). The SPECIAL TOOL thrust piece (3.2) must be positioned with the flat side on the outer edge of the rubber mount (2). The recess on the SPECIAL TOOL thrust piece (3.2) faces outwards.
SPECIAL TOOL Extraction and insertion tool
Fig 3
9 Position counterholder (3.3) from outside on front axle transverse control arm (1) IMPORTANT Here, the cutout of the SPECIAL TOOL counterholder (3.3) must be positioned on the bar (arrow B) of the front axle transverse control arm (1).  
    SPECIAL TOOL Extraction and insertion tool Fig 3
10 Screw nut (3.4), as shown, up to mounting face of threaded rod (3.1) SPECIAL TOOL Extraction and insertion tool Fig 3
11 Position hollow piston cylinder, hand pump and hydraulic hose on preassembled removal fixture and press in rubber mount (2) SPECIAL TOOL Hollow piston cylinder Fig 2
    SPECIAL TOOL Hand pump Fig 4
    SPECIAL TOOL Hydraulic hose (complete) Fig 5
12 Unscrew nut (3.4) and remove removal fixture    
13 Replace second rubber mount (2) of front axle transverse control arm (1) as described in operation steps 2 to 12 IMPORTANT Both rubber mounts (2) on a front axle transverse control arm (1) must always be replaced.  
INSTALLING Install     
14 Install front axle transverse control arm Model 450.3/4 up to 7.1.01 AR33.20-P-1452SN
    Model 450.3/4 as of 8.1.01 AR33.20-P-1452SM
    Model 451.3/4 AR33.20-P-1452MCC 
    Model 452.3/4 AR33.20-P-1452RR
Fig 2: Identifying Hollow Piston Cylinder (001 589 51 33 00)
G10978345Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Extraction And Insertion Tool (451 589 00 43 00)
G10978346Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Hand Pump (652 589 00 33 21)
G10978347Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Hydraulic Hose - Complete (652 589 00 33 23)
G10978348Courtesy of MERCEDES-BENZ USA