Remove/install quantity control valve of fuel system high pressure pump

AR07.05-G-0001NA

14.01.2019

Engine	470.9, 471.9## ## as of 032691 in model 800.110/112
	2nd generation engine 471

Remove/install quantity control valve of fuel system high pressure pump

W07.02-1013-09

Shown on engine 470.9

1	Fuel lines	4	Fuel system high pressure pump	7	Bolts
2	Fuel lines	5	Electrical wiring harness	8	Sealing rings
3	Electrical connector	6	Bracket	Y642	Quantity control valve

 Danger	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
 Warning	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
Topical note	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-N-5000-01H
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
 	Remove/install
1	Drain off fuel from fuel filter module.		AR07.03-G-1460-03N
2	Remove fuel lines (1, 2).	 Installation: Install new sealing rings.
		 Flange, low pressure fuel line to fuel high-pressure pump	*BA07.16-N-1014-03A
		 Bolt, flange for fuel line to fuel filter module	*BA07.16-N-1042-03A
		 Screw, fuel line to flange for fuel high-pressure pump	*BA07.16-N-1041-03A
3	Disconnect electrical connector (3) at quantity control valve (Y642).
4	Remove bracket (6) at fuel high-pressure pump (4) and crankcase.	 Screw, fuel high-pressure pump holder to crankcase	*BA07.16-N-1010-03A
		 Screw/nut, holder to fuel high-pressure pump	*BA07.16-N-1009-03A
5	Unscrew screws (7).	 Screw, quantity control valve to fuel high-pressure pump	*BA07.16-N-1031-03A
		 Torque wrench	*001589752100
6	Remove quantity control valve (Y642) and collect escaping fuel.	 Remove quantity control valve (Y642) by hand out of the housing flange for fuel system high pressure pump (4) using turning movements. Collect escaping fuel.
		 Installation: Replace sealing rings(8). Wet sealing rings (8) before installing with fuel.
7	Install in the reverse order
8	Connect vehicle diagnosis system, start diagnosis and perform quick test.	Only if the quantity control valve (Y642) has been replaced.
		 See information from body manufacturer.
9	Reset "adaptation range for quantity control valve".	Only if the quantity control valve (Y642) has been replaced.
		 The process is completely menu-assisted under: MCM - engine management (A4)  Adaptations  Parameterization  Resetting the calibration settings  Adaptation range for quantity control valve
10	End diagnosis and remove vehicle diagnosis system.	 See information from body manufacturer.
11	Fill fuel low-pressure circuit.		AR07.16-G-1007N
12	Start engine and perform an engine test run.	 Allow the engine to run at a higher engine speed. See information from body manufacturer.
		If engine fails to start or only runs for a brief period,
		
		Fill fuel low-pressure circuit again.
			AR07.16-G-1007N
13	Check area of quantity control valve (Y642) for leaks and switch off engine.	 Visual inspection.