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Perkins — Rocker cover - to remove and to fit

Maintenance

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

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Before you start

  • If the cap nuts are tightened too much they can fasten on the nuts for the rocker shaft brackets.

Procedure

  1. Disconnect the breather pipe.
  2. Remove the cap nuts and sealing washers from the top of the rocker cover.
  3. Lift off the rocker cover and joint together with the rocker cover seal.
  4. Check the rocker bracket nuts for tightness every time the cover is removed.
  5. Check the condition of the joint and sealing washers and clean the joint face of the cylinder head.
  6. Fit the rocker cover together with the seal between cover and induction manifold.
  7. Fit the seals and cap nuts; tighten to 20 Nm (15 lbf ft) 2,1 kgf m.

Specs & values

  • Cap nuts 20 Nm (15 lbf ft) 2,1 kgf m

Source: Perkins 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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