01:01-02
©
Scania CV AB 1997-05:2 9
Program 96
Dismantling
1. Remove the valve stem caps.
2. Extract collets, valve spring collars, springs
and valves. Use tools 99 195 and 99 196 to
compress the valve springs so that the collets
can be removed.
3. Place the valves in a stand so that they can be
refitted in the same cylinder head. Mark the
cylinder heads if several are removed at the
same time.
Checking, changing and machining
Valve stem seal (not standard)
Changing
1. Remove the valve stem seal.
2. Fit a new seal with tool 99 247.
Note Do not hammer on the seal so hard
that the valve guide is displaced.
Valves
Checking and machining
- Check dimension A on all valves.
- Machine the valves in a valve grinder.
Intake 19.5° and exhaust 44.5°.
See specifications.
Minimum dimension A for
ground valve
Intake 3.0 mm
Exhaust 1.7 mm
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