Overview - Mechanical Control Valve, Check Valve, Cover In Inner V

Fig 1: Exploded View Of Mechanical Control Valve And Check Valve For Hydraulic Adjusters

Courtesy of AUDI OF AMERICA, LLC

1. O-Ring
   • Always replace
2. Check Valve
   • Removing and Installing. Refer to CHECK VALVE, REMOVING AND INSTALLING .
3. Oil Screen
   • Always replace
   • Install the cover -11-
   • Removing and Installing. Refer to COVER IN THE INNER-V, REMOVING AND INSTALLING .
4. Seal
   • Always replace
5. Bolt
   • Tightening specification and sequence. Refer to Fig 2.
   • Always replace
6. O-Ring
   • Always replace
7. Bolt
   • Tightening specification, refer to -item  ) Bolt-.
8. Piston Cooling Nozzle Control Valve -N522-
   • Removing and Installing. Refer to Piston Cooling Nozzle Control Valve -N522-, REMOVING AND INSTALLING .
9. Oil Pressure Switch, Level 3 -F447-
   • Switching pressures 0.3 to 0.6 bar.
   • Green insulation
   • Check in Guided Fault Finding  using the Vehicle Diagnostic Tester.
   • Removing and Installing. Refer to Oil Pressure Switch, Level 3 -F447-, REMOVING AND INSTALLING .
   • Tightening specification, refer to -item  ) Oil Pressure Switch-.
10. Seal
    • Always replace
11. Cover
    • In the inner V
    • Removing and Installing. Refer to COVER IN THE INNER-V, REMOVING AND INSTALLING .
12. Plug
    • 30 Nm
13. Mechanical Switch Valve
    • Removing and Installing. Refer to MECHANICAL SWITCH VALVE, REMOVING AND INSTALLING .
14. O-rings
    • Always replace

Fig 2: Cover Bolts Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in stages as follows: