Valve Springs - Perkins 2800 Workshop Manual

3
2800

Valve springs

To remove and to fit Operation 3-6
Special requirements
Special tools
Description Part number
Valve spring compressor GE50026
To remove
Note: The valve springs can be removed with the cylinder head either fitted to or removed from the engine.
The procedure given here is for use when the cylinder head is fitted to the engine. Before any components are
removed, ensure that the relevant piston is set to the top of its compression stroke. If the piston is not at this
position, the valves can fall into the cylinder liner.
Caution: If a valve falls into the cylinder liner, the cylinder head must be removed.
1 Remove the rocker lever and rocker shaft assemblies, Operation 3-2.
2 Remove the electronic unit injectors, Operation 3-12.
3 Set the piston for the relevant valve spring assembly to the top of its compression stroke.
4 Use the hold-down clamp from the electronic unit injector to secure the valve spring compressor, GE50026,
to the cylinder head.
5 Insert the stud and base of the valve spring compressor into the bore of the injector sleeve. Use the bolt and
clamp from the electronic unit injector to secure the stud and base to the cylinder head. Fit the compressor
plate (A1) over the stud and fit the thrust bearing, the washer and the nut (A2)
6 Tighten the nut until the collets are loose on the valves.
7 Remove two collets from each valve.
8 Loosen slowly, then remove the nut, washer, thrust bearing and plate.
9 Remove the rotocoils, valve springs and washers from each valve.
10 Inspect the valve springs, refer to Chapter 2, Specifications for the correct dimensions and spring force.
11 Repeat steps 3 to 10 for the other valve spring assemblies which are to be removed.
Workshop Manual, TSD3450E, Issue 1 39