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Kohler KD62V12 — Turbocharger removal and installation

Repair & overhaul

For the Kohler KD62V12, from the Kohler service manual.

Applies to: Kohler KD62V12, Kohler KD62V12 engine

Before you start

  • Burns by hot engine - wait until cooled
  • Replace all sealings

Procedure

  1. Remove admission pipes, exhaust pipes and turbocharger cooling lines; drain LT coolant.
  2. Remove screws and washers; open and loosen V-clamp.
  3. Place screws in bores and lift turbocharger using sling.
  4. Remove screws, distance sleeves and seal; remove compensator.
  5. Repeat for all turbochargers.
  6. Installation: grease screws with Molykote HSC; install studs.
  7. Mount compensator with seal on turbochargers; tighten screws with distance sleeves and seal.
  8. Insert O-rings in turbocharger bracket.
  9. Grease V-clamp lips and thread; position V-clamp on exhaust pipe outlets.
  10. Position turbochargers on brackets and tighten screws; position V-clamp on connection exhaust pipe to compensator and tighten.
  11. Vent coolant circuit at the end.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Turbocharger screw 430AB Amazon eBay M16x2x220-10.9: 230 Nm
  • Turbocharger screw 430AD Amazon eBay M16x2x90-C3J: 120 Nm

Full service-parts list: Kohler KD62V12 →

Source: Kohler 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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