3.
Loosen adjusting screw (1) and remove valve
bridge. Do not remove rocker arm (2).
4.
Measure distance (A) between valve stem
end and cylinder head top at the injector
bore with depth gauge.
• The specified value for a new cylinder
head: 93.8 mm.
• Admissible wear: 2 mm.
• Have the affected cylinder head replaced
by expert personnel ahead of schedule if
the measured value is > 95.8 mm.
5.
Install valve bridge.
6.
Adjust valve clearance (→ Page 104)
Step 2 optional: Measure valve protrusion at the valve stem with measuring
jig 2
1.
Check TDC position of piston in cylinder A1:
• If rocker arms on cylinder A1 are unloaded, the piston is in firing TDC.
• If rocker arms on cylinder A1 are loaded, the piston is in overlap TDC.
2.
Measure valve protrusion for each valve in two crankshaft positions (firing TDC and overlap TDC) according
to the diagram. Diagram (→ Page 104).
MS15058/04E 2018-12
| Valve Drive | 101
TIM-ID: 0000045593 - 011