Check Vacuum Pump - Ar43.05-D-1325H

MODEL 906 with ENGINE 642.896/898/992/993 

Courtesy of MERCEDES-BENZ USA

	Checking
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
1	Connect vacuum tester (1) to brake booster		AR43.10-D-0024-01H
		Test connection	Fig 1
		Vacuum tester	Fig 2
Keep engine idling for at least 30 seconds and read off the measured value on the vacuum tester (1).
2	Start engine, read off measured value	Vacuum in hose after engine has been running for 30 seconds For any deviation from the permissible value, check vacuum lines and vacuum pump, if necessary replace vacuum lines or vacuum pump: ↓ Remove/install vacuum pump	*BE43.05-N-1001-01D
		Engine 646	AR43.05-D-1320WE
3	Turn off engine
4	Disconnect vacuum tester (1) from brake booster		AR43.10-D-0024-01H
		Test connection	Fig 1
		Vacuum tester	Fig 2

Fig 1: Test Connection (168 589 08 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Vacuum Tester (201 589 13 21 00)

Courtesy of MERCEDES-BENZ USA