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Remove/Install Vacuum Pump - AR43.05-P-1320SRE

MODEL 453.091/391/491 

G12094985Courtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove transmitter key and unplug battery charger power supply plug    
2 Remove covering over engine    
3 Disconnect electrical connector (1)    
4 Unclip electrical wiring harness (2) from bracket (3)    
5 Operate both catch hooks of pneumatic clutch (4) simultaneously and detach brake booster vacuum line (5) at vacuum pump (M56) INSTALLATION IMPORTANT : Check for correct seating of pneumatic clutch (4) at vacuum pump (M56).
Check brake booster vacuum line (5) for damage.
In the case of complaints.

Replace brake booster vacuum line (5)
AR43.10-P-0355SR 
6 Remove bolts (6)    
7 Route vacuum pump (M56) out until bleed line (7) at rear on vacuum pump (M56) is accessible    
8 Unclip vent line (7) from bracket (3)    
9 Detach vent line (7) from vacuum pump (M56)    
10 Install in the reverse order    
INSPECT Check     
11
REFER TO MAINTENANCE
Carry out brake test on the test stand   AP42.00-P-4290MCC