Perkins 1300 EDi Series, Руководство по ремонту, Страница: 47 / 264

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Workshop Manual, TPD 1353E, Issue 3 35
Peregrine EDi and 1300 Series EDi
To inspect and to correct Operation 3-12
Special requirements
1 Remove the cylinder head, see Operation 3-8.
2 Put a small amount of low viscosity oil, for example calibration fluid, into the inlet and exhaust ports then
check for leakage.
3 Wait five minutes, then check again for leakage.
Note: If no oil leaks past the valve seat, it does not need to be reground.
4 Ensure that the heads of the valves and the face of the cylinder head are clean.
5 Check the depth of the valves below the face of the cylinder head before the valve springs are removed. Put
the valve depth gauge on the face of the cylinder head and set the dial gauge to zero. Carefully put the valve
depth gauge in position over the head of each valve (A) and compare the measurement with the relevant Data
and dimensions for the "Inlet and exhaust valves" on page 10.
6 If a valve is below the depth limit, check the valve depth with a new valve in position.
7 If the valve depth is still below the limit, the valve seat insert must be renewed, see Operation 3-19.
8 Remove the valves and valve springs, see Operation 3-10.
9 Visually inspect the condition of the collets.
10 Visually inspect the valve springs for corrosion, for damage or distortion.
11 Check that the end faces of the springs are square and flat.
12 Measure the free length of the valve springs (B) and compare it with the relevant Data and dimensions for
the "Valve guides and springs" on page 11.
Continued
Special tools
Description Part number
Valve depth gauge
21825617 and
21825496
W131
A
W112
B
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