OC60-E2, OC95-E2, WSM
ENGINE
S-15
(3) Fuel System
Adjusting Injection Timing
1. Connect the injection pipe to the injection pump as shown in
the figure.
2. Set the speed control lever to the maximum speed position.
3. Turn the flywheel clockwise to check that fuel comes out from
the tip of the injection pipe.
4. Turn the flywheel so that the F mark (1) on the flywheel
circumference reaches near below the mark (2) on the fin
slowly turn the flywheel clockwise from that position, and stop
it immediately when the fuel level at the tip of the injection pipe
begins rising. At this time, check if the F mark (1) on the
flywheel circumference aligns with the fin mark.
5. If the timing is incorrect, adjust it with shims (3).
A
There are 2 F mark lines in [B].
A
Use the line near T mark to adjust.
(Reference)
A
Adding or removing one shim (0.15 mm, 0.0059 in.) varies the
crank angle by approx. 0.017 rad to 0.026 rad (1 to 1.5 )
Fuel Tightness of Pump Element
1. Set an injection pump pressure tester to the injection pump.
2. Set the speed control lever to the maximum speed position.
3. Turn the engine ten times or more with the starter to increase
the pressure.
4. If the pressure can not reach the allowable limit, replace the
pump with new one or repair with a Kubota-authorized pump
service shop.
Injection
timing
Factory spec.
OC60-E2
0.26 to 0.30 rad
15 to 17 before T.D.C.
OC95-E2
0.23 to 0.26 rad
13 to 15 before T.D.C.
(1)
F Mark
[A]
OC60-E2
(2)
Mark
[B]
OC95-E2
(3)
Injection Timing Adjusting Shim
(4)
Injection Pump
0000009202E
Pump element fuel
tightness
Allowable limit
14.7 MPa
150
2133 psi
0000009204E
