Kubota EA330-E4 Series - SERVICING SPECIFICATIONS

ENGINE
EA330-E4, WSM
1-S5
2. SERVICING SPECIFICATIONS
ENGINE BODY
Item Factory Specification Allowable Limit
Cylinder head surface Flatness – 0.05 mm / 100 mm
0.002 in. / 3.94 in.
Top Clearance 0.60 to 0.80 mm
0.024 to 0.031 in.
–
Compression Pressure 3.48 MPa
35.5 kgf/cm
2
505 psi
2.60 MPa
26.5 kgf/cm
2
377 psi
Decompression Device 0.940 to 1.31 mm
0.0370 to 0.0515 in.
–
Valve Clearance (Cold) 0.16 to 0.20 mm
0.0063 to 0.0078 in.
–
Valve Face Angle 0.786 to 0.794 rad
45.0 to 45.5 °
–
Valve Seat Angle 0.785 rad
45.0 °
–
Valve Seat Width 2.1 mm
0.083 in.
–
Valve Recessing 0.80 to 0.90 mm
0.032 to 0.035 in.
1.5 mm
0.059 in.
Valve Stem and Valve Guide
• Valve Stem
• Valve Guide Bore
Oil Clearance
O.D.
I.D.
0.035 to 0.065 mm
0.0014 to 0.0025 in.
6.960 to 6.975 mm
0.2741 to 0.2746 in.
7.010 to 7.025 mm
0.2760 to 0.2765 in.
0.1 mm
0.004 in.
–
–
Intake Valve Open
Close
0.35 rad
20 ° before T.D.C.
0.79 rad
45 ° after B.D.C.
–
–
Exhaust Valve Open
Close
0.87 rad
50 ° before B.D.C.
0.26 rad
15 ° after T.D.C.
–
–
Valve Spring Free Length 34.5 mm
1.36 in.
33.8 mm
1.33 in.
Valve Spring Setting Load / Setting Length 59 N / 31 mm
6.0 kgf / 31 mm
13 lbf / 1.2 in.
49 N / 31 mm
5.0 kgf / 31 mm
11 lbf / 1.2 in.
Valve Spring Tilt – 1.2 mm
0.047 in.
KiSC issued 05, 2015 A