Rocker Cover; Operation 3-1 To Remove And To Fit - Perkins 900 Series Workshop Manual

3

Rocker cover

To remove and to fit
Early engines are supplied with an aluminium rocker cover. The latest engines have a plastic rocker cover.
Both of these covers have a seal (B1) fitted in the flange.
To remove
1 Disconnect the breather pipe, if fitted.
2 Remove the two cap nuts (A1). Each cap nut has a steel washer (A2), a shim washer (A3) and a rubber seal
(A4).
Note: The shim washers are not used with the plastic rocker covers.
3 Lift off the rocker cover.
To fit
1 Check the condition of the rubber seals (A4), the steel washers (A2) and the shim washers (A3) for the cap
nuts (A1). If necessary, the seals for the cap nuts can be renewed.
Note: The shim washers are not used with the plastic rocker covers.
2 Check the condition of the rocker cover seal (B1). If necessary, the seal can be renewed.
3 Clean the seal face of the cylinder head and fit the rocker cover.
4 Fit the steel washer, the shim and the seal to each cap nut and fit the cap nuts.
Caution: Damage to the seals can occur if the cap nuts are not tightened centrally through the sealing washer
and the rocker cover. If the seals are damaged they must be renewed.
5 Tighten the cap nuts to 30 Nm (22 lbf ft) 3,1 kgf m for the aluminium rocker cover, or 20 Nm (15 lbf ft)
2,0 kgf m for the plastic rocker cover.
6 Fit breather pipes as necessary.
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3
4
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This document has been printed from SPI². Not for Resale
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C0023
Workshop Manual, TPD 1345E, issue 3
900 Series
Operation 3-1
C0024