4-20
ENG
VALVES AND VALVE SPRINGS
NOTE:
NOTE:
4. Remove:
Supper spring seat 1
Svalve springs 2
Soil seal 3
Slower spring seat 4
Svalve 5
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
EAS00239
CHECKING THE V AL VES AND V AL VE GUIDES
The following procedure applies to all of the
valves and valve guides.
1. Measure:
Svalve-stem to valve guide clearance
Valve-stem to valve-guide clearance =
Valve guide inside diameter a –
Valve stem diameter b
Out of specification Replace the valve
guide.
Valve-stem to valve-guide clear-
ance
Intake
0.010 0.037 mm
Limit: 0.08 mm
Exhaust
0.025 0.052 mm
Limit: 0.10 mm
2. Replace:
Svalve guide
To ease valve guide removal and installation,
and to maintain the correct fit, heat the cylinder
head to 100_C (212_F) in an oven.