3
19
MHT 10120 L M
Series
D
D
8
8
- CHECKING/ADJUSTING THE VALVE CLEARANCE
Operation to be performed the first time on reaching 500 hours of service,
periodically every 1500 hours of service.
Adjust the valve clearance with the engine cold.
Adjust the valve clearance with the engine cold.
Disassembling/assembling the cover of the head end “1” (Fig. D8).
If the head covers are excessively smeared, wipe and then remove
If the head covers are excessively smeared, wipe and then remove
them.
them.
Disassembly:
Remove the engine vent tube “6” (fig. D8/1) from the cover of the cylinders
head “2” (Fig. D8/1).
Unscrew and remove the hollow, hex head screw “3” (fig. D8/1) from the
cover of the cylinders head together with sealing ring “4” (Fig. D8/1).
Remove the head cover “2” (Fig. D8/1).
Assembly:
Clean the sealing surfaces of the cylinder heads and relative cover “2” (Fig.
D8/1).
Always replace gasket “5” (fig. D8/1) between the cover of the cylinder head
and the head.
Fit the cylinders head cover “2” (Fig. D8/1).
Insert the hollow, hex head screw “3” (Fig. D8/1) with new sealing rings “4”
(Fig. D8/1) and tighten: tightening torque: 30 Nm.
1
6
2
3
4
5
FIG. D8
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