DCE80-100E
Technical Handbook
Engine TAD720VE
Service
32
P.Group 30
TDCE01
04GB
Checking and adjusting the valve clearances
N.B. Never attempt to check the valve clearances when the
engine is running. The engine must be stationary and cold.
1. Remove valve cover and crankcase ventilation
Crankshaft position 1
2. Rotate the crankshaft until the valves of cylinder 1 overlap.
See picture for valve adjustment
N.B. Overlaping of valves means
The exhaust valve is just closing and the inlet valve is just open-
ing. Neither of the push-rods can be turned around in this posi-
tion. Cylinder 1 is closest to the flywheel.
3. Adjust the valve clearances according to the black markings
in the adjoining picture.
Inlet valve: 0,30 mm
Exhaust valve: 0,50 mm
4. Tighten the lock nut with 20±2 Nm. Re-check the clearance
with a feeler guge.
5. Make a chalk mark on every adjusted valve.
Crankshaft position 2
6. Rotate the crank shaft another turn (360°)
7. Adjust the valve clearances according to the black markings
in the adjoining picture.
8. Fit a new gasket for the valve cover.
9. Fit the valve cover and tighten the cover screws with 9+/-1
Nm.
Crank-
shaft
position
1
Crank-
shaft
position
2
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