Check Exhaust Gas Turbocharger Aneroid Capsule - Ar09.40-D-5920WE

ENGINES 651.955/957 in MODEL 906 

Courtesy of MERCEDES-BENZ USA

	Removing	-	-
1	Remove air intake pipe	-	AR09.10-D-8131WE
2	Remove coolant expansion reservoir and place to one side with coolant hoses connected	-	AR20.30-D-4950SD
	Checking	-	-
3	Detach vacuum hose (2) on boost pressure control flap aneroid capsule (1) and vacuum hose (6) on the wastegate aneroid capsule (5)	-	-
4	Place hose for manually-operated vacuum pump on hose connection for boost pressure control flap aneroid capsule (1)	Hand vacuum pump	Figure
5	Apply vacuum to boost pressure control flap aneroid capsule (1) until the control rod (3) no longer moves	If a vacuum buildup is not possible or the built up vacuum drops off significantly, the boost pressure control flap aneroid capsule (1) should be replaced. See: ↓ Remove/install aneroid capsules on turbocharger	AR09.40-D-1002WE
6	Detach hose for manually-operated vacuum pump on hose connection for boost pressure control flap aneroid capsule (1) and place on hose connection for wastegate aneroid capsule (5)	Hand vacuum pump	Figure
7	Apply vacuum to wastegate aneroid capsule (5) until the control rod (4) no longer moves	If a vacuum buildup is not possible or the built up vacuum drops off significantly, the wastegate aneroid capsule (5) should be replaced. See: ↓ Remove/install aneroid capsules on turbocharger	AR09.40-D-1002WE
8	Put vacuum hose (2) onto boost pressure control flap aneroid capsule (1) and vacuum hose (6) on the wastegate aneroid capsule (5)	-	-
	Install	-	-
9	Attach coolant expansion reservoir	-	AR20.30-D-4950SD
10	Install air intake pipe	-	AR09.10-D-8131WE

Fig 1: Hand Vacuum Pump (001 589 73 21 00)

Courtesy of MERCEDES-BENZ USA