Centinel System – Repair Manual – 011-021   EGR Mixer

• Remove the charge air cooler connection hose and hose clamp from the EGR mixer inlet. Refer to Procedure 010-027.
• Remove the air compressor supply line. Refer to Procedure 012-014.
• Remove the v-band clamp between the EGR mixer and the charge air cooler inlet adapter.

Do not remove the EGR inlet pipe into the EGR mixer. This is a precision interface and performance will be affected if disturbed. There is no service procedure for this and none is required.

Remove the capscrews at the four-bolt flange between the EGR mixer and the air intake horn.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

Use compressed air to blow out any debris or soot buildup inside the EGR mixer.

Clean all mounting surfaces with solvent.

Dry with compressed air.

Inspect the EGR mixer for cracks. Replace the EGR mixer if cracks are found.

Inspect the v-band clamps for signs of overextension. The band must not be bent or cracked.

Inspect the v-band clamp thread for damage.

Replace the v-band clamp if damage is found.

Install a new hose at the EGR mixer inlet.

Install a new o-ring between the EGR mixer and the air intake connection. Install and tighten capscrews.

• Install the v-band clamp on the inlet adapter and the EGR mixer.
• Install the air compressor supply line. Refer to Procedure 012-014.
• Install the charge air cooler connection. Refer to Procedure 010-027.
• Start and operate the engine and check for leaks at the air connections.

If failure resulted in coolant, oil, excessive fuel or excessive black smoke entering the exhaust system, the aftertreatment system must be inspected. Refer to Procedure 014-013.