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Detroit Diesel — Installation of Straight Tube and Flange Assembly in EGR System

A Detroit Diesel service procedure — check it applies to your exact model before use.

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Before you start

  • To avoid injury from electrical shock, use care when connecting battery cables. The magnetic switch studs are at battery voltage.
  • To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.

Procedure

  1. Install new delivery pipe hose with two new hose clamps onto the EGR delivery pipe. Do not tighten the hose clamps.
  2. Carefully slide the new tube and flange EGR valve inlet pipe into the new delivery pipe hose. Do not tighten the hose clamps.
  3. Position the EGR valve onto the mixer housing with two new O-ring seals. If equipped, position the EGR heater plate assembly with new O-ring seal between the EGR valve and new tube and flange EGR valve inlet pipe. Using four bolts, attach the tube and flange EGR valve inlet pipe, EGR valve heater plate (if equipped) and EGR valve to mixer housing. Torque four bolts in an X pattern to 30-38 N·m (22-28 lb·ft). Reconnect the Engine Harness to the EGR valve.
  4. If necessary, adjust the location of the delivery pipe hose to ensure a proper fit between the EGR delivery pipe and tube and flange EGR valve inlet pipe. Make sure the pipes are NOT touching inside the hose. If necessary, adjust the pipes to provide clearance.
  5. Torque the two EGR delivery pipe hose clamps to 6-6.5 N·m (53-57 in·lbs).
  6. Reconnect vehicle battery power.
  7. Start engine and verify repair.

Tools required

  • torque wrench

Specs & torque values

  • Four bolts for EGR valve inlet pipe assembly, torque 30-38 N·m (22-28 lb·ft) in X pattern
  • Two EGR delivery pipe hose clamps, torque 6-6.5 N·m (53-57 in·lbs)
  • New delivery pipe hose with two new hose clamps
  • New O-ring seals (2)

Source: manual:08 60-7 EGR RATE MEASUREMENT SYSTEM.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.