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Home >> Mercedes Benz >> 2017 >> GLS63 AMG >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Pneumatic System - 166 Chassis >> Testing & Repair >> Remove/Install Brake Booster Vacuum Line - AR43.10-P-0355GQ

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

Model 166 with engine 276, 278, 642, 651 

Model 292 with engine 276, 278 

Illustration shows model 166.024 

Fig 1: Brake Booster Vacuum Line Components Location - Model 166 With Engine 276, 278, 642 (Shown On Model 166.024)
G14138904Courtesy of MERCEDES-BENZ USA

Illustration shows model 166.063 

G14138905Courtesy of MERCEDES-BENZ USA
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Eliminate vacuum in BAS brake booster (A7/7) IMPORTANT To do this, press the brake pedal several times with the engine switched off.  
2 Detach vacuum line (1a) and vacuum line with check valve (1b) If necessary.
IMPORTANT The vacuum line (1a) and vacuum line with check valve (1b) can be detached at the connecting point (2) and separately removed.
INSTALLATION IMPORTANT Check that the O-ring is in good condition and seated correctly; replace if necessary.
 
3 Remove cover over left suspension strut tower When removing vacuum line with check valve (1b).  
4 Remove cover (3) of cable duct When removing vacuum line with check valve (1b).  
5 Remove upper engine cover When removing vacuum line (1a).  
6 Remove left air duct segment Model 166.063 with engine 276  
7 Remove left-hand air filter housing Model 166.063 with engine 276 AR09.10-P-1150GQC
8 Disconnect vacuum line with check valve (1b) from BAS brake booster (A7/7) and remove When removing vacuum line with check valve (1b).
INSTALLATION IMPORTANT Replace seal.
 
9 Detach vacuum hose (4) from vacuum pump (1a) When removing vacuum line (1a).  
10 Unlock vacuum line (1a) and pull off vacuum pump (5) When removing vacuum line (1a).  
11 Unclip vacuum line (1a) to electric vacuum pump (6) from soundproofing of left cylinder head Model 166.063 with engine 276  
12 Detach vacuum line (1a) from electric vacuum pump (6) Model 166.063 with engine 276  
13 Release vacuum line (1a) and detach from fitting behind vacuum reservoir When removing vacuum line (1a).  
14 Release vacuum line (1a) and detach from intake manifold When removing vacuum line (1a).  
15 Pull vacuum line (1a) out of holder and remove When removing vacuum line (1a).  
16 Install in the reverse order    
17 Carry out brake test on the test stand    
REFER TO MAINTENANCE   Model 166 with engine 276, 278, 642, 651 AP42.00-P-4290BA