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Home›Repair guides›Cylinder Head Bolt Replacement with Jacobs Brake

Caterpillar — Cylinder Head Bolt Replacement with Jacobs Brake

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

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Before you start

  • Wear eye protection and cover the cylinder head bolt hole with towels to minimize oil spray and help prevent personal injury
  • Replace the three cylinder head bolts ONE AT A TIME to prevent cylinder head distortion

Procedure

  1. Remove the cylinder head bolt and washer closest to the intake manifold, one per brake housing.
  2. Remove oil from the cylinder head bolt hole using a blow gun nozzle with extension.
  3. Install the Caterpillar washer on the Jacobs cylinder head bolt and install into the hole.
  4. Tighten the bolt to 203 lbft (275 N-m).
  5. Repeat the procedure for the remaining two cylinder head bolts, one at a time.
  6. Install the cylinder head bolt spacers on the cylinder head bolts.
  7. Torque the spacers to 65 lbft (88 N-m).

Tools required

  • Torque wrench

Specs & torque values

  • Jacobs bolts
  • 203 lbft (275 N-m) torque specification
  • 65 lbft (88 N-m) spacer torque

Source: manual:015851D.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.