Centinel System – Repair Manual – 011-044   EGR Valve Mounting Bracket

• Remove the EGR valve heat shield.
  Refer to Procedure 011-032 in Section 11.
• Remove the front and rear EGR connection tubes.
  Refer to Procedure 011-025 in Section 11.
• Remove the EGR valve and remove the EGR valve seal from the EGR valve outlet port.
  Refer to Procedure 011-022 in Section 11.
• Disconnect the aftertreatment fuel injector lines and bulkhead support bracket from the EGR valve mounting bracket.
  Refer to Procedure 011-051 in Section 11.

Remove one of the EGR valve bracket rear support mounting capscrews (2) from the EGR valve mounting bracket and cylinder head.

Remove the remaining two EGR valve mounting bracket capscrews (1).

Use protective caps from the Air Handling Clean Care Kit to cover open points.

Inspect the ends and mating joints of the bracket for signs of fretting or material transfer, cracks, or other damage. Replace the EGR valve support bracket if fretting or material transfer, cracks, or other damage is found.

Corrosion is normal and will be found at the EGR valve to bracket joint. Clean the corrosion off the sealing surface using safety solvent, or a Scotch Brite™ 7448 abrasive pad.

The new seal will
not function properly if the bracket sealing surface have been cleaned with a power tool combined with abrasive pads.

Inspect the sealing surface for signs of excessive pitting at the EGR connection jumper seals. If the pitting is large enough to catch a fingernail, replace the EGR valve support bracket.

Install the EGR valve mounting bracket onto the engine block and the EGR valve mounting bracket rear support.

Install three capscrews into the engine block and the rear support.

Tighten the two EGR valve mounting bracket capscrews first (1).

Tighten the rear support bracket capscrew into the back of the engine block (2).

• Connect the aftertreatment fuel injector lines and bulkhead support bracket to the EGR valve mounting bracket.
  Refer to Procedure 011-051 in Section 11.
• Install the EGR valve and a new EGR seal.
  Refer to Procedure 011-022 in Section 11.
• Install the front and rear EGR connection tubes.
  Refer to Procedure011-025 in Section 11.
• Install the EGR valve heat shield.
  Refer to Procedure 011-032 in Section 11.
• Operate the engine and check for leaks.