Komatsu F30791, Shop Manual

Page: 197 / 298

10 - Take out the screws (14) in the sequence indicated
and remove the complete cylinder head (15).
H The cylinder head gasket (16) must be substituted
every time it is dismantled.
INSTALLATION OF THE
CYLINDER HEAD
.
To install, reverse the removal procedure.
1 - Fill up the cooling circuit.
Coolant: approx. 4
,
2 - Start the engine to circulate the liquid through all cir-
cuits. Stop the engine and check the level.
H Only forcabin version. Make sure that the heat-
ing cock is open.
Screws:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nm
Nuts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nm
Nut: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nm
Screw: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nm
H Adjust valve clearance. (For details, see «20. CON-
TROLS AND ADJUSTMENTS - Adjusting valve clear-
ance»).
H Raise the cylinder head, keeping it horizontal, and
place it on the gasket without shifting anything.
H Lubricate the screw-threadings with engine oil.
H Tighten the screws in the sequence indicated.
(See figure).
Cylinder head screws: 68.6 w 1.96 Nm
30-15
REMOVAL AND INSTALLATION CYLINDER HEAD
PC20R-8 PC27R-8
14
15
16
RKP06410
RKP05131
2
4
8
6
10
14
11
13
12 9
5
3
7
1
Intake side
Flywheel side
Fan side
Exhaust side
RKP05141
7
9
13 6
8
3
5 4
2
10
12
14
1
Intake side
Flywheel side
Fan side
Exhaust side
11