perkins2806气门导管

Valve guides

To remove and to fit

Special requirements

Operation -9

To remove

  Remove the cylinder head, Operation -5.

2  Remove the valves, Operation -7.

  Use the special tool (A), GE5004, and a hammer to drive the valve guide (A2) from the cylinder head.

To fit

  Apply clean engine oil to the outside diameter of the new valve guides.

2800

2 Use the special tool (B), GE5004, together with the sleeve (B2), GE50044, to install the valve guide. The

guide must protrude from the cylinder head, as  shown (C), by 5,0 +/- 0,5 mm (.8 +/- 0.02 in).

Refer to Chapter 2, Specifications for the correct dimensions for the inside diameter of new and used valve

guides.

  When a new valve guide has been fitted, check that there is full contact between the valve and the valve

seat. If necessary, lap the valve to the seat.

4  Fit the valves, Operation -7.

5  Fit the cy linder head, Operation -5.

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