Remove/install brake booster vacuum line - AR43.10-P-0355GQ

MODEL 166 with ENGINE 276, 278, 642, 651

Shows model 166.024

Fig 1: Identifying Brake Booster Vacuum Line Remove/Install Components - Shows Model 166.024

G09982519

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
1	Switch off ignition
2	Eliminate vacuum in BAS brake booster (A7/7)	To do this, press the brake pedal several times with the engine switched off.
3	Open engine hood and raise to vertical position		AR88.40-P-1000GQ
4	Detach vacuum line (1a) and vacuum line with check valve (1b)	If necessary The vacuum line (1a) and vacuum line with check valve (1b) can be detached at the connecting point (2) and separately removed. Check O-rings for condition and correct seating, replace if necessary.
	Remove vacuum line with check valve (1b)
5	Remove cover over left suspension strut tower
6	Remove cover (3) of cable duct
7	Detach vacuum line with check valve (1b) from BAS brake booster (A7/7) and remove	Install new gasket
	Remove vacuum line (1a)
8	Remove upper engine cover	Engine 278, 642, 651
9	Detach vacuum hose (4) from vacuum line (1a)	Engine 642
10.1	Unlock vacuum line (1a) and pull off vacuum pump (5)	Engine 276, 278, 642
10.2	Release vacuum line (1a) and detach from fitting behind vacuum reservoir	Engine 651
11	Release vacuum line (1a) and detach from intake manifold	Engine 278
12	Pull vacuum line (1a) out of brackets and remove
13	Install in the reverse order
14	Carry out brake test on the test stand		AP42.00-P-4290BA