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Cummins/Onan DJ30 — Install Injection Nozzle

Repair & overhaul

For the Cummins/Onan DJ30, from the Cummins/Onan service manual.

Applies to: Onan (Onan Division of Studebaker Corporation, Minneapolis, Minnesota) Spec T, Cummins/Onan DJA engine

Before you start

  • A dirty mounting surface could permit blow-by causing nozzle failure and power loss

Procedure

  1. Install a new heat shield to head gasket in the cylinder head recess.
  2. Install the heat shield, a new nozzle gasket and the nozzle adapter.
  3. Insert the nozzle assembly into the recess; do not strike the tip.
  4. Install the nozzle flange and two cap screws, tightening alternately to 20-21 ft-lbs.

Specs & values

  • 20-21 ft-lbs

Full service-parts list: Onan (Onan Division of Studebaker Corporation, Minneapolis, Minnesota) Spec T →

Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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