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Detroit Diesel — Installation of the Air Compressor

Installation

From a Detroit Diesel service manual — check it applies to your exact model before use.

Before you start

  • Using an incorrect (too long) bolt can push cup plugs into the gear train causing severe damage.
  • Ensure O-rings and retainers are installed on both ends of the coolant lines.

Procedure

  1. Clean all foreign material from the mating surfaces of the air compressor and cylinder block.
  2. Install a new O-ring on the air compressor hub and a new O-ring on the oil supply.
  3. Install the air compressor on the cylinder block; torque the four bolts to 60 N·m.
  4. Install the coolant supply and return lines to the air compressor.
  5. Install the air lines to and from the air compressor.
  6. Fill the cooling system.
  7. Start the engine and check for leaks.

Specs & values

  • Air compressor bolts: 60 N·m (44 lb·ft)
  • Correct bolt length: 35 mm (1.37 in)

Source: Detroit Diesel 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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