Kubota EA330-E4 Series - Page 93

ENGINE
EA330-E4, WSM
1-S28
Rocker Arm Bracket and Push Rod
1. Remove the rocker arm bracket (1) and rocker arms together.
2. Pull out the push rods (2).
(When reassembling)
• Apply engine oil to the rocker arm bushing bore and nut thread.
• Insert the push rod into groove of tappet securely as shown in
the figure.
• After tightening bracket mounting nut to the specified torque,
check that the rocker arm smoothly.
NOTE
• Do not keep the push rods apart from the rocker arms while
tightening the nut.
IMPORTANT
• The valve clearance must be adjusted after the rocker arm
is installed.
9Y1211018ENS0036US0
Cylinder Head
1. Remove the screws of tension bolt guide (1).
2. Remove the air cleaner flange (2).
3. Remove the cylinder head.
(When reassembling)
• Replace on the O-ring (3) between cylinder block and cylinder
head with a new one.
• Replace the head gasket with a new one.
• When installing the new head gasket, be careful of the
installation direction.
IMPORTANT
• Gradually tighten the nuts in three passes in the order of (a)
to (f) as shown in the figure. After tuning the engine for
more than 30 minutes, be sure to retighten the head nut.
• The valve clearance must be adjusted after the cylinder
head is installed.
9Y1211018ENS0037US0
Tightening torque
Rocker arm bracket
mounting nut
17 to 20 N·m
1.7 to 2.1 kgf·m
13 to 15 lbf·ft
(1) Rocker Arm Bracket
(2) Push Rod
(3) Tappet
Tightening torque Cylinder head mounting nut
57 to 61 N·m
5.8 to 6.3 kgf·m
42 to 45 lbf·ft
(1) Tension Bolt Guide
(2) Air Cleaner Flange
(3) O-ring
KiSC issued 05, 2015 A