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Home >> Mercedes Benz >> 2021 >> CLS450 4Matic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Pneumatic System - 257 Chassis >> Testing & Repair >> Remove/Install Brake Booster Vacuum Line - AR43.10-P-0355FR

Remove/Install Brake Booster Vacuum Line - AR43.10-P-0355FR

Model 257 

Model 290 

G14548976Courtesy of MERCEDES-BENZ USA

Shown on model 257 

G14548977Courtesy of MERCEDES-BENZ USA

Shown on model 257 

REMOVINGINSTALLING Remove/install     
1 Remove vacuum in BAS brake booster (A7/7) by depressing brake pedal several times.    
2 Remove windshield wiper system.   AR82.30-P-0001FR
3 Pull vacuum line (1) with check valve (2) out of seal (3) of BAS brake booster (A7/7). INSTALLATION IMPORTANT Check seal (3) for damage.
In the event of a problem,

replace seal (3).
 
4 Disconnect vacuum line (1) at the connecting point (4).    
5 Unclip cable duct (5) from bulkhead (6).    
6 Unhook vacuum line (1) from bulkhead (6) (arrows) and remove to the right with the cable duct (5). NOTES
Do not kink the vacuum line (1). The vacuum line (1) will otherwise be damaged.
IMPORTANT Pay attention to installation position.
 
7 Remove cable duct (5) from vacuum line (1). When replacing the vacuum line (1).  
8 Install in the reverse order.    
INSPECT Check     
9 Perform brake test on test stand.    
REFER TO MAINTENANCE     AP42.00-P-4290BA