Kubota M5040, Workshop Manual

Page: 157 / 559

1-S31
M5040, M6040, M7040, WSM ENGINE
Selecting Cylinder Head Gasket
Q
Replacing the Cylinder Head Gasket
1. Make sure to note the notch (a) , (b) or (c) of cylinder head gasket
(1) in advance.
2. Replace the same notch (a) , (b) or (c) as the original cylinder
head gasket (1).
Q
Selecting the Cylinder Head Gasket
• Select the cylinder head gasket (1) thickness to meet with the top
clearance when replacing the piston, piston pin bush, connecting
rod or crankpin bearing.
1. Measure the piston head’s protrusion or recessing from the
crankcase cylinder face 4 spots per each piston and (average of
four pistons) using the dial gauge as shown in figure.
2. Select the suitable cylinder head gasket refer to the table below.
W1022965
Notch of
Cylinder
Head
Gasket
Thickness of cylinder
head gasket
Part Code
Piston Head’s
protrusion or
recessing from the
level of crankcase
cylinder face.
(average of 4 pistons)
Before
tightening After
tightening
Without
notch
(a)
1.10 mm
0.0433 in. 1.00 mm
0.0394 in.
1G772-03610
0.250 to 0.3425 mm
0.0098 to 0.0135 in.
1 notch
(b)
1.00 mm
0.0394 in. 0.90 mm
0.0354 in.
1G772-03600
0.150 to 0.250 mm
0.0059 to 0.0098 in.
2 notches
(c)
0.90 mm
0.0354 in. 0.80 mm
0.0315 in.
1G772-03310
0.0775 to 0.150 mm
0.0031 to 0.0059 in.
(1) Cylinder Head Gasket
(2) Measuring Point
A : Front Cover Side
B : Flywheel Housing Side
C : Notch of Cylinder Head Gasket
(a) Without Notch
(b) 1 Notch
(c) 2 Notches
KiSC issued 06, 2008 A