Engine 606.912 IFI

1	Air filter air intake line	remove, install.
1a	Resonance intake line	remove, install.
2	Shaft cover on valve cover	remove, install. At the assembly make sure that the leak-off hose from cylinder 1 to the fuel return hose (90/5) is correctly routed.
3	Leak-off hoses (90/3) between the injectors	check for leaks, replace if necessary.
4	Leak-off hose (90/3) from cylinder 1 with special pliers	disconnect, connect. Caution! Do not pull on hose
5	Suction line to fuel heater (90/1) and fuel return hose (90/5)	pinch off with clamps and remove clamps
6	Fuel low pressure circuit	drain partially (e.g. disconnecting a fuel line).
7	Pressure tester (019) on leak-off line (90/3)	connect, disconnect.
8	Fuel low pressure circuit with 900 mbar	pressurize and set pointer. Maximum pressure drop 20 mbar after 2 minutes If pressure drop > 20 mbar, check system with soap water (e.g. diluted dishwashing liquid) for leaks.

Special Tools

Conventional tools, test equipment

Description	Brand, model, etc.
Special pliers
Spray bottle with hand pump	local purchase