Kubota SM-E4B Series User Manual

ENGINE
SM-E4B SERIES, WSM
1-S4
2. SERVICING SPECIFICATIONS
ENGINE BODY
Item Factory Specification Allowable Limit
Valve Clearance (Cold) 0.145 to 0.185 mm
0.00571 to 0.00728 in.
–
Compression Pressure
• Difference among Cylinders
Z482-E4B
D722-E4B
D782-E4B
Z602-E4B
D902-E4B
2.85 to 3.23 MPa
29.0 to 33.0 kgf/cm
2
413 to 469 psi
3.53 to 4.02 MPa
36.0 to 41.0 kgf/cm
2
512 to 583 psi
–
2.26 MPa
23.0 kgf/cm
2
327 psi
2.55 MPa
26.0 kgf/cm
2
370 psi
10 % or less
Top Clearance 0.50 to 0.70 mm
0.020 to 0.027 in.
–
Cylinder Head Surface Flatness – 0.05 mm
0.002 in.
Valve Recessing (Intake and Exhaust) −0.10 to 0.10 mm
−0.0039 to 0.0039 in.
0.30 mm
0.012 in.
Valve Stem to Valve Guide
(Intake and Exhaust)
• Valve Stem
• Valve Guide
Clearance
O.D.
I.D.
0.030 to 0.057 mm
0.0012 to 0.0022 in.
5.968 to 5.980 mm
0.2350 to 0.2354 in.
6.010 to 6.025 mm
0.2367 to 0.2372 in.
0.10 mm
0.0039 in.
–
–
Valve Face (Intake and Exhaust) Angle 0.79 rad
45 °
–
Valve Seat (Intake and Exhaust) Angle
Width
0.79 rad
45 °
2.12 mm
0.0835 in.
–
–
Intake Valve Timing
[Z482/D722/D782-E4B]
Open
Close
0.445 rad (25.5 °)
before T.D.C.
0.881 rad (50.5 °)
after B.D.C.
–
–
Exhaust Valve Timing
[Z482/D722/D782-E4B]
Open
Close
0.969 rad (55.5 °)
before B.D.C.
0.201 rad (11.5 °)
after T.D.C.
–
–
Intake Valve Timing
[Z602/D902-E4B]
Open
Close
0.35 rad (20 °)
before T.D.C.
0.79 rad (45 °)
after B.D.C.
–
–
KiSC issued 01, 2013 A

Kubota SM-E4B Series Specifications

General

Brand	Kubota
Model	SM-E4B Series
Category	Engine
Language	English