ADR2011 Exhaust System Inspection

122SD mm 49.01.05

Important: The Australian Department of Infrastructure and Transportation regulations for 2011 (ADR2011) require lower exhaust emissions, thus requiring new exhaust system components. See Fig.. In particular the aftertreatment device (ATD), which is part of the aftertreatment system (ATS), requires special attention during regularly scheduled maintenance inspections. If any discrepancies are discovered, refer to the engine manufacturer's service literature for repair instructions.

  • Inspect the canister for dents.

  1. Clamp

  2. Bellows

  3. ATD Intake Pipe

  4. ATD

  5. ATD Outlet Pipe

Fig. 1, Typical Aftertreatment Device (ADR2011)

Inspection

  1. Check for leakage at the clamp that attaches the exhaust pipe to the turbocharger exhaust outlet. If leakage exists, tighten the nut on the clamp to the required torque. If leakage persists, install a new clamp.
  2. Check the exhaust pipe, bellows, and each exhaust seal clamp for leakage, wear, cracks, or damage. Replace damaged components as needed. If leakage exists at a clamp, tighten the nuts to the required torque. If leakage persists, install a new exhaust seal clamp. Do not reuse seal clamps. Once a seal clamp is loosened or removed, it must be replaced.
  3. If present, check the condition of the insulation material around the exhaust pipe between the turbocharger and the ATD.
  4. Check the ATD mounting bands for tightness. Tighten to 30 lbf·ft (41 N·m) if needed. Do not overtighten.
  5. Check for leaks around the clamps that attach the ATD in the ATS, and around the clamps that retain the DPF in the ATD. No leaks are allowed anywhere in the system.
  6. Check all sensors attached to the ATD for leaks or damaged wires. No leaks are allowed.
  7. Check the DPF exterior surface for dents or other damage. See Item A of Fig.. A dent over 3 inches (76 mm) in diameter and 1/4-inch (6-mm) deep could cause internal damage to the DPF, causing it to malfunction.
  8. Check for heat discoloration on the surface of the ATD. Heat discoloration may indicate internal damage; especially around the DPF.
  9. Check any wires, lines, or hoses within 4 inches (10 cm) of the exhaust system for heat damage. Repair or reroute as needed.
Note:
Parent topic: Exhaust System Inspection (Noise Emission Control)
Document Number: 0000126063
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-06-21