The engine must stand or be locked at TDC for cylinder 1 before installation of the fuel system high pressure pump (1). Malfunctions during operation of the engine can occur otherwise.
1
Install a new sealing ring (3) on the fuel system high pressure pump (1) and lightly wet with clean engine oil.
2
Check the markings (arrows) on the drive gear (2) and on the fuel system high pressure pump (1) must be flush with each other.
If necessary, turn gear (2). Only in this position can the crescent shaped cutout on the positioning disk be pushed past on the gear in the timing case.
3
Insert both rear screw/bolts into the flange for the fuel system high pressure pump (1).
W07.16-1091-12
W07.16-1092-08
4
Insert fuel system high pressure pump into the crankcase (4).
Place fuel system high pressure pump straight on the crankcase (4); in doing so note the hole pattern of the bolt holes on the crankcase (4). The gear (2) must engage in the gear (6).
5
Tighten fuel system high pressure pump onto crankcase (4). Engine 470.9 Engine 471.9## ## as of 032691 Engine 471.9## ## up to 032690 Engine 473.9 .
