Test turbocharger vacuum unit - AR09.40-P-5915CD

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ENGINES 651 in MODELS 204, 207, 212, 218, 221

Fig 1: Testing Turbocharger Vacuum Unit

Courtesy of MERCEDES-BENZ USA

	Checking
1	Detach vacuum hose on the aneroid capsule (1, 2 or 3) to be checked
2	Attach vacuum pump to hose connection for aneroid capsule (1, 2 or 3)	Hand vacuum pump	Figure
2		Vacuum tester	Figure
3	Build up a pressure of about 700 mbar	If a pressure buildup is not possible or the built up pressure drops, replace aneroid capsule (1, 2 or 3). See: ↓
		Remove/install aneroid capsules on turbocharger	AR09.40-P-1002CD
4	Attach vacuum hose to hose connection for aneroid capsule (1, 2 or 3)

Fig 2: Identifying Hand Vacuum Pump (001 589 73 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Vacuum Tester (201 589 13 21 00)

Courtesy of MERCEDES-BENZ USA