Remove/install vacuum pump - AR43.05-P-1320CD

Model 172, 204, 207, 212, 218, 221 with Engine 651  

Fig 1: Vacuum Pump Component Location - Model 204 With Engine 651

Courtesy of MERCEDES-BENZ USA

Caution	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and nondeburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Warning	Risk of injury  Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
Warning	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove/install
1	Perform disable for the high-voltage onboard electrical system	Model 212.098/298 with engine 651 with code ME04 (Mild hybrid drive)	AR54.10-P-1150EH
2	Open engine hood and raise to vertical position	Model 204.0/2/9, 218, 221 with engine 651
		Model 172.4 with engine 651	AR88.40-P-1000V
		Model 204.3, 207, 212 with engine 651	AR88.40-P-1000EW
3	Remove upper engine cover
4	Remove the throttle valve actuator		AR09.41-P-1321CD
5.1	Remove bottom part of soundproofing	Model 172.4, 204.0/2/3, 207, 212, 218 with engine 651
		Model 172.4 with engine 651	AR94.30-P-5300W
		Model 204.0/2/3, 207, 212, 218 with engine 651 Install the bottom section of the soundproofing only after an engine test run and leak test have been performed.	AR94.30-P-5300EW
5.2	Remove lower engine compartment paneling	Model 204.9, 221 with engine 651
		Model 204.9 with engine 651	AR61.20-P-1105CY
		Model 221 with engine 651 except code Z07 (Top protection) Only install lower engine compartment lining after engine test run and leak test.	AR61.20-P-1105SX
6	Remove charge air temperature sensor (B178)	Replace sealing ring.	AR09.41-P-2002CD
7	Remove engine charge air duct downstream of charge air cooler		AR09.41-P-8624CD
8	Release and detach vacuum line (1)
9	Unscrew bolts (2)	Bolt, vacuum pump to crankcase or oil pump	*BA43.05-P-1001-01J
10	Remove vacuum pump (3)	Insert vacuum pump (3) onto shaft of oil pump (4). Install new seal (5).
11	Clean sealing surface	The sealing surface should be free of grease and dust. Leakage can occur otherwise.
12	Install in the reverse order
	Check
	Risk of burn injuries  suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust Risk of poisoning  caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.	AS49.00-Z-0001-01A
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts	AS00.00-Z-0005-01A
13	Perform engine test run, check engine and brake system for leaktightness and proper operation