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Home›Repair guides›Caterpillar›Prechamber Check Valves - Replace

Caterpillar — Prechamber Check Valves - Replace

Maintenance

From a Caterpillar owner's manual covering: 1YG1-Up, 4CG1-Up, G3612, G3616. Check it applies to your exact model before use.

Applies to: Caterpillar G3612, Caterpillar G3616

Procedure

  1. Remove check valve assembly (3) and gasket (5).
  2. Keep plug (1) for reassembly. Discard other parts. Obtain new parts.
  3. Use 9U-5156 Tool Group to clean check valve seat.
  4. Install new O-ring seal (2), check valve assembly (3), O-ring seal (4), and gasket (5).

Tools required

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

Source: Caterpillar owner's 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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